Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

"Online First" included
Without submitted and only approved publications
Only approved publications

34730 Publications

The response of a large CsI(Tl) detector particles and heavy ions in the intermediate energy range

Fomichev, A. S.; David, I.; Lukyanov, S. M.; Penionzhkevich, Y. E.; Skobelev, N. K.; Tarasov, O. B.; Matthies, A.; Ortlepp, H.-G.; Wagner, W.; Lewitowicz, M.; Saint-Laurent, M. G.; u. a.

  • Nuclear Instruments and Methods in Physics Research A 344 (1994) pp. 378

Permalink: https://www.hzdr.de/publications/Publ-666
Publ.-Id: 666


High-lying three-quasiparticle bans and signature splitting in 81Rb

Döring, J.; Schwengner, R.; Funke, L.; Rotter, H.; Winter, G.; Cederwall, B.; Lidén, F.; Johnson, A.; Atac, A.; Nyberg, J.; Sletten, G.

  • Physical Review C 50 (1994) pp. 1845

Permalink: https://www.hzdr.de/publications/Publ-665
Publ.-Id: 665


Long-time behavior of the semiclassical baker's map

Dittes, F.-M.; Doron, E.; Smilansky, U.

  • Physical Review E 49 (1994) pp. R963

Permalink: https://www.hzdr.de/publications/Publ-664
Publ.-Id: 664


Interpretation of bands in 163Er within the tilted rotation scheme

Brockstedt, A.; Lytkens-Lindén, J.; Bergström, M.; Eckström, L. P.; Ryde, H.; Barcelar, J. C.; Garrett, J. D.; Hagemann, G. B.; Herskind, B.; May, F. R.; Tjom, P. O.; Frauendorf, S.

  • Nuclear Physics A 571 (1994) pp. 337

Permalink: https://www.hzdr.de/publications/Publ-663
Publ.-Id: 663


Dielectron production as a probe for nuclear exotic states and nuclear interactions at intermediate energies

Bratkovskaya, E. L.; Titov, A. I.; Kämpfer, B.

  • Book (Authorship)
    "Hadrons and Nuclei from QCD" World Scientific Singapore, New Jersey, London, Hong Kong (1994) pp. 1

Permalink: https://www.hzdr.de/publications/Publ-662
Publ.-Id: 662


Hadron sources of the lepton pair production in proton-deuteron interaction at the initial energies 1-5 GeV

Bratkovskaya, E. L.; Kämpfer, B.; Molochkov, A. V.; Reznik, B. L.; Titov, A. I.

  • Jadernaja fizika 57 (1994) pp. 924

Permalink: https://www.hzdr.de/publications/Publ-661
Publ.-Id: 661


Flavour-kinetic model for particle production in ultra-relativistic heavy-ion collisions

Barz, H.-W.; Friman, B. L.; Knoll, J.; Schulz, H.

  • Book (Authorship)
    "Statistical Description of Transport in Plasma, Astro- and Nuclear Physics" Nova Science Publishers, Inc., 1994, pp. 407

Permalink: https://www.hzdr.de/publications/Publ-660
Publ.-Id: 660


"Sears bands" in 199Pb and 200Pb

Baldsiefen, G.; Hübel, H.; Korten, W.; Willsau, P.; Grawe, H.; Heese, J.; Kluge, H.; Maier, K. H.; Schubart, R.; Frauendorf, S.; Maier, H. J.

  • Nuclear Physics A 574 (1994) pp. 521

Permalink: https://www.hzdr.de/publications/Publ-659
Publ.-Id: 659


Temporal and thermal properties of intermediate-mass fragments from teh 32S + 58Ni reaction at 30 A MeV

Tutay, A.; Budzanowski, A.; Fuchs, H.; Homeyer, H.; Pausch, G.; Schwarz, C.; Siwek, A.; Taymaz, A.

  • Acta Physica Polonica B 26 (1995) pp. 1413

Permalink: https://www.hzdr.de/publications/Publ-658
Publ.-Id: 658


K- - meson production in proton-nucleus collisions

Sibirtsev, A.; Büscher, M.; Müller, H.; Schneidereit, C.

K- - meson production in proton-nucleus interactions at projectile energies up to 15 GeV is studied. As a first step the available data on K- - meson production in pp interactions are compared with different parametrizations and results of model calculations. Because of considerable uncertainties in the current descriptions of the energy dependence of the elementary K- cross section a new parametrization is suggested. Experimental data on K- production in pA collisions are analyzed in the framework of the Rossendorf-Collision and folding models. Satisfactory descriptions of the momentum spectra at forward angles are achieved. From an analysis of the A dependence it can be concluded that K- mesons are well suided to investigate final-state interactions for particles interacting strongly with the residual nucleus. Furthermore, we propose experimental studies on K- production close to threshold. Such measurements are particularly sensitive to contributions from secondary processes or from multi-nucleon interactions.

  • Zeitschrift für Physik A 351 (1995) pp. 333

Permalink: https://www.hzdr.de/publications/Publ-657
Publ.-Id: 657


Plans for investigations of subthreshold K+ production in p+A collisions

Schult, O. W. B.; Sistemich, K.; Koptev, V.; Müller, H.; Cassing, W.; Jarczyk, L.; Komarov, V. I.; Sibirtsev, A.; Ernst, J.; Santo, R.; Nioradze, M.; Kulikov, A. V.; Hardt, A.; Dshemuchadse, S.; Leege, K.-W.; u. a.

We plan to investigate sub-threshold K+ production in proton bombardment of atomic nuclei in order to study the reaction mechanism through a measurement of the double differential cross section and of K+ p and K+ d coincides. The status of the theoretical studies is summarized, and the spectrometer to be installed in the COSY ring is briefly described.

  • Nuclear Physics A 583 (1995) pp. 629

Permalink: https://www.hzdr.de/publications/Publ-656
Publ.-Id: 656


In-beam spectroscopy and shell model structure of the neutron deficient 103In and 100, 102Cd

Schubart, R.; Grawe, H.; Górska, M.; Fitzgerald, J. B.; Heese, J.; Kluge, H.; Maier, K. H.; Rejmund, M.; Schramm, M.; Severyniak, D.; Spohr, K.; Käubler, L.

  • Physica Scripta T56 (1995) pp. 311

Permalink: https://www.hzdr.de/publications/Publ-655
Publ.-Id: 655


Electromagnetic fission of 238U at 600 and 1000 MeV per nucleon

Rubehn, T.; Müller, W. F. J.; Bassini, R.; Begemann-Blaich, M.; Blaich, T.; Ferrero, A.; Gross, C. J.; Immé, G.; Iori, I.; Kunde, G. J.; Kunze, I.; Lindenstruth, V.; Lynen, U.; Zwieglinski, B.; u. a.

  • Zeitschrift für Physik A 353 (1995) pp. 197

Permalink: https://www.hzdr.de/publications/Publ-654
Publ.-Id: 654


The FOPI Detector at SIS/GSI

Ritman, J. L.

  • Nuclear Physics B (Proc. Suppl.) 44 (1995) pp. 708

Permalink: https://www.hzdr.de/publications/Publ-653
Publ.-Id: 653


On the transverse momentum distribution of strange hadrons produced in relativistic heavy ion collisions

Ritman, J. L.; Herrmann, N.; Best, D.; Alard, J. P.; Amouroux, V.; Bastid, N.; Belayev, I. M.; Berger, L.; Biegansky, J.; Buta, A.; Caplar, R.; Cindro, N.; Coffin, J. P.; Crochet, P.; Dona, R.; Wohlfarth, D.; u. a.

  • Zeitschrift für Physik A 352 (1995) pp. 355

Permalink: https://www.hzdr.de/publications/Publ-652
Publ.-Id: 652


Sideward flow in Au + Au collisions at 400 A MeV

Ramillien, V.; Dupieux, P.; Alard, J. P.; Amouroux, V.; Bastid, N.; Berger, L.; Boussange, S.; Fraysse, L.; Ibnouzahir, M.; Montarou, G.; Montbel, I.; Pras, P.; Basrak, Z.; Belayev, I. M.; u. a.

  • Nuclear Physics A 587 (1995) pp. 802

Permalink: https://www.hzdr.de/publications/Publ-651
Publ.-Id: 651


Evidence for collective expansion in light-particle emission following Au + Au collisions at 100, 150 and 250 A MeV

Poggi, G.; Pasquali, G.; Bini, M.; Maurenzig, P.; Olmi, A.; Taccetti, N.; Alard, J. P.; Amouroux, V.; Basrak, Z.; Bastid, N.; Belayev, I. M.; Berger, L.; Blaich, T.; Boussange, S.; u. a.

  • Nuclear Physics A 586 (1995) pp. 755

Permalink: https://www.hzdr.de/publications/Publ-650
Publ.-Id: 650


Probing the nuclear liquid-gas phase transition

Pochodzalla, J.; Möhlenkamp, T.; Rubehn, T.; Schüttauf, A.; Wörner, A.; Zude, E.; Begemann-Blaich, M.; Blaich, T.; Emling, H.; Ferrero, A.; Gross, C. J.; Immé, G.; Iori, I.; u. a.

  • Physical Review Letters 75 (1995) pp. 1040

Permalink: https://www.hzdr.de/publications/Publ-649
Publ.-Id: 649


Multifragmentation and flow: peripheral vs. central collisions

Pochodzalla, J.; Begemann-Blaich, M.; Blaich, T.; Bowman, D. R.; Charity, R. J.; Cosmo, A.; Ferrero, A.; Gelbke, C. K.; Hsi, W. C.; Hubele, J.; Immé, G.; Iori, I.; u. a.

  • Nuclear Physics A 583 (1995) pp. 553

Permalink: https://www.hzdr.de/publications/Publ-648
Publ.-Id: 648


Cluster formation during expansion of hot and compressed nuclear matter produced in central collisions of Au on Au at 250 A MeV

Petrovici, M.; Buta, A.; Alard, J. P.; Amouroux, V.; Basrak, Z.; Bastid, N.; Berger, L.; Blaich, T.; Wohlfarth, D.; u. a.

  • Physical Review Letters 74 (1995) pp. 5001

Permalink: https://www.hzdr.de/publications/Publ-647
Publ.-Id: 647


Study of high-spin states in 181,182Os

Kutasarova, T.; Lieder, R. M.; Schnare, H.; Hebbinghaus, G.; Balabanski, D.; Gast, W.; Krämer-Flecken, A.; Bentley, M. A.; Fallon, P.; Howe, D.; Mokhtar, A. R.; Frauendorf, S.

  • Nuclear Physics A 587 (1995) pp. 111

Permalink: https://www.hzdr.de/publications/Publ-646
Publ.-Id: 646


Fragment flow and the multifragmentation phase space

Kunde, G. J.; Hsi, W. C.; Kunze, W. D.; Schüttauf, A.; Wörner, A.; Begemann-Blaich, M.; Blaich, T.; Bowman, D. R.; Charity, R. J.; Cosmo, A.; Ferrero, A.; Gelbke, C. K.; Hubele, J.; u. a.

  • Physical Review Letters 74 (1995) pp. 38

Permalink: https://www.hzdr.de/publications/Publ-645
Publ.-Id: 645


Interplay of collective flow phenomena and velocity correlations of intermediate-mass fragments in collisions of Au + Au at E = (100-400) A MeV

Kotte, R.; Kämpfer, B.; Mösner, J.; Neubert, W.; Wohlfarth, D.; Alard, J. P.; Amouroux, V.; Basrak, Z.; Bastid, N.; Belayev, I. M.; Berger, L.; Blaich, T.; Boussange, S.; Buta, A.; Caplar, R.; Cerruti, C.; Cindro, N.; Coffin, J. P.; Dona, R.; Dupieux, P.; Erö, J.; Fan, Z. G.; Fintz, P.; Fodor, Z.; Fraysse, L.; Freifelder, R.; Frolov, S.; Gobbi, A.; Grigorian, Y.; Guillaume, G.; Herrmann, N.; Hildenbrand, K. D.; Hölbling, S.; Houari, O.; Ibnouzahir, M.; Jeong, S. C.; Jundt, F.; Kecskemeti, J.; Koncz, P.; Korchagin, Y.; Krämer, M.; Kuhn, C.; Legrand, I.; Lebedev, A.; Manko, V.; Matulewicz, T.; Mgebrishvili, G.; Moisa, D.; Montarou, G.; Montbel, I.; Pelte, D.; Petrovici, M.; Pras, P.; Rami, F.; Ramillien, V.; Reisdorf, W.; Sadchikov, A.; Schüll, D.; Seres, Z.; Sikora, B.; Simion, V.; Smolyankin, S.; Sodan, U.; Teh, K.; Tezkratt, R.; Trzaska, M.; Vasiliev, M. A.; Wagner, P.; Wessels, J. P.; Wienold, T.; Wilhelmi, Z.; Zhilin, A. V.

  • Physical Review C, Vol. 51, Number 5, May 1995, pp. 2686-2699

Permalink: https://www.hzdr.de/publications/Publ-644
Publ.-Id: 644


"Shears Bands" in Pb nuclei - a new nuclear structure effect

Korten, W.; Baldsiefen, G.; Neffgen, M.; Hübel, H.; Chmel, S.; Pohler, W.; van Severen, U. J.; Willsau, P.; Frauendorf, S.; Meng, J.; Grawe, H.; Heese, J.; Kluge, H.; Maier, K. H.; Schubart, R.; Spohr, K.

  • Physica Scripta T56 (1995) pp. 44

Permalink: https://www.hzdr.de/publications/Publ-643
Publ.-Id: 643


In-Beam Study of 109Sn

Käubler, L.; Prade, H.; Reif, J.; Schwengner, R.; Winter, G.; Grawe, H.; Heese, J.; Kluge, H.; Maier, K. H.; Schubart, R.; Spohr, K.

In-beam spectroscopic investigations of 109Sn have been performed
using the reactions 55Mn(58Ni,3pn) and 106Cd(alpha,n)
with E58Ni= 240 MeV and Ealpha=23 MeV, respectively.
An extended level scheme of 109Sn is presemted showing high-spin
states up to Ex ca. 8 MeV with Jpi=(41/2+).
The problem of the 109Sn ground state has been solved identifying
a 12.8 keV transition deexciting the 7/2+ state to the 5/2+
g.s. A half-life of T1/2=7(1) ns has been measured for
the 17/2+ state at Ex=2114 keV. The experimental
data are compared with the predictions of shell-model calculations.

  • Physica Scripta T56 (1995) pp. 266

Permalink: https://www.hzdr.de/publications/Publ-642
Publ.-Id: 642


The proton g9/2 isomer in the N=50 nucleus 87Rb and M2 transition rates in 85,87Rb

Käubler, L.; Protochristov, C.; Michailova, M.; Reif, J.; Andrejtscheff, W.; Funke, L.; Kostova, L.; Prade, H.; Schwengner, R.; Winter, G.

ow-lying states of the N=50 nucleus 87Rb have been investigated
in the (alpha, alpha') reaction measuring gamma gamma- and delayed gamma-rf-coincidences.
A half-life of T1/2=6(1) ns was obtained for the level at 1578.1
keV. This experimental result confirms the 9/2+ assignement
and the proton 1g9/2 single-particle character of this state.
Experimental M2 transition strengths in 85,87Rb are compared
with predictions of the shell model and the particle-core coupling mwodel.

  • Zeitschrift für Physik A 352 (1995) pp. 127

Permalink: https://www.hzdr.de/publications/Publ-641
Publ.-Id: 641


High-spin states in 109Sn and their decay to the ground state

Käubler, L.; Prade, H.; Reif, J.; Schwengner, R.; Winter, G.; Grawe, H.; Heese, J.; Kluge, H.; Maier, K. H.; Schubart, R.; Spohr, K.

An extended level scheme of 109Sn is presented showing high-spin
states up to Ex ca. 8 MeV and spins up to Jpi=(41/2+).
Their decay to the 5/2+ ground state has been observed identifying
a 12.8 keV 7/2+ -> 5/2+ transition. A half life of
T1/2=7(1) ns has been measured for the 17/2+ state
at Ex=2114 keV. The experimental data are compared with the
predictions of shell-model calculations.

  • Zeitschrift für Physik A 351 (1995) pp. 123

Permalink: https://www.hzdr.de/publications/Publ-640
Publ.-Id: 640


Matwej Bronstein und die Anfänge der Quantengravitation

Gorelik, G.; Rotter, H.

  • Physikalische Blätter 51 (1995) pp. 423

Permalink: https://www.hzdr.de/publications/Publ-639
Publ.-Id: 639


Entropy in central Au + Au reactions beetween 100 and 400 A MeV

Dzelalija, M.; Kotte, R.; Mösner, J.; Neubert, W.; Wohlfarth, D.; u. a.

  • Physical Review C 52 (1995) pp. 346

Permalink: https://www.hzdr.de/publications/Publ-638
Publ.-Id: 638


Low-spin termination of the superdeformed band in 135Nd

Deleplanque, M. A.; Frauendorf, S.; Clark, D. L.; Diamond, R. M.; Stephens, F. S.; Becker, J. A.; Brinkmann, M. J.; Cederwall, B.; Fallon, P.; Farris, L. P.; Henry, E. A.; Hubel, H.; Hughes, J. R.; Korten, W.; Lee, I. Y.; Macchiavelli, A. O.; Stoyer, M. A.; Willsau, P.; Draper, J. E.; Duyar, C.; Rubel, E.

  • Physical Review C 52 (1995) pp. R2302

Permalink: https://www.hzdr.de/publications/Publ-637
Publ.-Id: 637


Multifragmentation of spectators in relativistic heavy-ion reactions

Botvina, A. S.; Mishustin, I. N.; Begemann-Blaich, M.; Hubele, J.; Immé, G.; Iori, I.; Kreutz, P.; Kunde, G. J.; Kunze, W. D.; Lindenstruth, V.; Lynen, U.; Moroni, A.; Müller, W. F. J.; Ogilvie, C. A.; Pochodzalla, J.; Raciti, G.; Rubehn, T.; Sann, H.; Schüttauf, A.; Seidel, W.; Trautmann, W.; Wörner, A.

  • Nuclear Physics A 584 (1995) pp. 737-756

Permalink: https://www.hzdr.de/publications/Publ-636
Publ.-Id: 636


Shears bands in 201Pb and 202Pb

Baldsiefen, G.; Maagh, P.; Hübel, H.; Korten, W.; Chmel, S.; Neffgen, M.; Pohler, W.; Grawe, H.; Maier, K. H.; Spohr, K.; Schubart, R.; Frauendorf, S.; Maier, H. J.

  • Nuclear Physics A 592 (1995) pp. 365

Permalink: https://www.hzdr.de/publications/Publ-635
Publ.-Id: 635


Mining Relics as Sources of Natural Radioactivity - Release of Radon from Uranium Mill Tailings

Baraniak, L.; Mende, A.

  • Book (Authorship)
    Hrsg.: Winter, M., Wicke, A., "Umweltradioaktivität, Radioökologie und Strahleneinwirkungen" Verlag TÜV Rheinland, 1 (1993) pp. 76

Permalink: https://www.hzdr.de/publications/Publ-634
Publ.-Id: 634


Characterisation of Oxide Layers Formed by Hydrothermal Chromate Treatment

Thieme, M.

  • Corros. Sci. 34 (1993) pp. 1557

Permalink: https://www.hzdr.de/publications/Publ-633
Publ.-Id: 633


Transformation of Titanium Carbide Precipitations under Hydrothermal Conditions

Thieme, M.; Scharnweber, D.; Stephan, T.

  • Corros. Sci. 34 (1993) pp. 383

Permalink: https://www.hzdr.de/publications/Publ-632
Publ.-Id: 632


The Hydrothermal Chromate Treatment of Carbon Steel. The Electrochemical and Surface Analytical Characterisation of Protecting Oxide Layers

Thieme, M.; Scharnweber, D.

  • Corros. Sci. 34 (1993) pp. 363

Permalink: https://www.hzdr.de/publications/Publ-631
Publ.-Id: 631


Degradation of 3,3',4,4'-Tetrachlorobiphenyl by selected white rot fungi

Vyas, B. R. M.; Sasek, V.; Matucha, M.; Bubner, M.

  • Chemosphere 28 (1994) 6 pp. 1127-34

Permalink: https://www.hzdr.de/publications/Publ-630
Publ.-Id: 630


The effects of radiolysis upon speciation and solubility of neptunium in brine solutions

Silber, H. B.; Nitsche, H.; Gatti, R. C.; Gehmecker, H.; Feige, G.; Bucher, J. J.; Edelstein, N. M.

  • Radiochimica Acta 66/67 (1994) pp. 15

Permalink: https://www.hzdr.de/publications/Publ-629
Publ.-Id: 629


Near-threshold behavior of the K-shell satellites in CO

Reich, T.; Heimann, P. A.; Petersen, B. L.; Hudson, E. A.; Hussain, Z.; Shirley, D. A.

  • Physical Review A 49 (1994) 6 pp. 4570-77

Permalink: https://www.hzdr.de/publications/Publ-628
Publ.-Id: 628


Long term plutonium solubility and speciation studies in a synthetic brine

Nitsche, H.; Roberts, K.; Xi, R.; Prussin, T. G.; Becraft, I.; Mahamid, A.; Silber, H. B.; Carpenter, S. A.; Gatti, R. C.

  • Radiochimica Acta 66/67 (1994) pp. 3

Permalink: https://www.hzdr.de/publications/Publ-627
Publ.-Id: 627


Comparison of chemical extractions and laser photoacoustic spectroscopy for the determination of plutonium species in carbonate solution

Neu, M. P.; Hoffmann, D. C.; Roberts, K.; Nitsche, H.; Silva, R. J.

  • Radiochimica Acta 66/67 (1994) pp. 251

Permalink: https://www.hzdr.de/publications/Publ-626
Publ.-Id: 626


Structural Investigations on Pyrolysed Polycarbosilanes

Martin, H. P.; Irmer, G.; Schuster, G.; Müller, E.

  • Fresenius' Journal of Analytical Chemistry 349 (1994) pp. 160

Permalink: https://www.hzdr.de/publications/Publ-625
Publ.-Id: 625


Thermochromatographic studies of heavy actinides in metal columns

Hübener, S.; Eichler, B.; Gäggeler, H. W.

  • Journal of Alloys and Compounds 213/214 (1994) pp. 429

Permalink: https://www.hzdr.de/publications/Publ-624
Publ.-Id: 624


Toward a soft x-ray fourier-transform spectrometer

Howells, M. R.; Frank, K.; Hussain, Z.; Moler, E. J.; Reich, T.; Möller, D.; Shirley, D. A.

  • Nuclear Instruments and Methods in Physics Research A 347 (1994) pp. 182-191

Permalink: https://www.hzdr.de/publications/Publ-623
Publ.-Id: 623


Neutron and X-Ray Investigations on the Oxygen Bonding in YBa2Cu3O7-x combined with Physico-chemical Methods

Große, M.; Schuster, G.; Teske, K.; Anwand, W.; Henkel, K.

  • Fresenius' Journal of Analytical Chemistry 349 (1994) pp. 231-233

Permalink: https://www.hzdr.de/publications/Publ-622
Publ.-Id: 622


Distribution of uranium and radionuclides in a uranium-mining rockpile in Schlema, Saxony, Germany

Geipel, G.; Thieme, M.; Bernhard, G.; Nitsche, H.

  • Radiochimica Acta 66/67 (1994) pp. 305
  • Poster
    Migration '95

Permalink: https://www.hzdr.de/publications/Publ-621
Publ.-Id: 621


Synthesis of the 14C-labelled juwenoid W 328

Ebert, T.; Havlicek, L.; Wimmer, Z.; Bubner, M.

  • Journal of Labelled Compounds and Radiopharmaceuticals XXXIV, 377 (1994)

Permalink: https://www.hzdr.de/publications/Publ-620
Publ.-Id: 620


Operating and strategy for the decommissioning of the radiochemical plant AMOR-I

Bernhard, G.; Friedrich, H.-J.; Boeßert, W.; Eckardt, A.

  • Kerntechnik 59 (1994) 3 pp.135

Permalink: https://www.hzdr.de/publications/Publ-619
Publ.-Id: 619


Thermochromatographic Studies of Oxide and Hydroxide Species of Molybdenum - Model Experiments with Respect to the Physico-chemical Characterization of Element 106

Vahle, A.; Hübener, S.; Eichler, B.

  • Radiochimica Acta 69 (1995) pp. 233

Permalink: https://www.hzdr.de/publications/Publ-618
Publ.-Id: 618


Environmental Applications of XANES: Speciation of Tc in Cement after Chemical Treatment and Se after Bacterial Uptake

Shuh, D. K.; Kaltsoyannis, N.; Bucher, J. J.; Edelstein, N. M.; Clark, D. L.; Nitsche, H.; Reich, T.; Hudson, E. A.; Mahamid, A.; Torretto, P.; Lukens, W. W.; Roberts, K.; Yee, B. C.; Carlson, D. E.; Yee, A.; Buchanan, B. B.; Leighton, T.; Yang, W.-S.; Bryan, J. C.

  • Mater. Res. Soc. Symp. Proc. 344 (1995)

Permalink: https://www.hzdr.de/publications/Publ-617
Publ.-Id: 617


X-Ray Photoelectron Study of the Interaction of UO2(CIO4)2 with Calcite Diabase Minerals in Water Solutions

Teterin, Y. A.; Nefedov, V. I.; Ivanov, K. E.; Baev, A. S.; Geipel, G.; Reich, T.; Nitsche, H.

  • Dokl. Akademii Nauk 344 (1995) pp. 206 (in Russian)
  • Surface Investigations 13, 613 (1998)

Permalink: https://www.hzdr.de/publications/Publ-616
Publ.-Id: 616


Synchrotron X-ray Absorption Spectroscopy: a New Tool for Actinide and Lanthanide Speciation in Solids and Solution

Nitsche, H.

  • Journal Alloys and Compounds 223 (1995) pp. 274

Permalink: https://www.hzdr.de/publications/Publ-615
Publ.-Id: 615


Silicon Carbide Derived from Silica Sol and Sugar

Martin, H. P.; Müller, E.; Knoll, Y.; Strienitz, R.; Schuster, G.

  • Journal of Materials Science Letters 14 (1995) pp. 620

Permalink: https://www.hzdr.de/publications/Publ-614
Publ.-Id: 614


A XANES and EXAFS Investigation of the Speciation of Selenite following Bacterial Metabolization

Buchanan, B. B.; Bucher, J. J.; Carlson, D. E.; Edelstein, N. M.; Hudson, E. A.; Kaltsoyannis, N.; Leighton, T.; Lukens, W. W.; Shuh, D. K.; Nitsche, H.; Reich, T.; Roberts, K.; Torretto, P.; Woicik, J.; Yang, W.-S.; Yee, A.; Yee, B. C.

  • Inorganic Chemistry 34 (1995) pp. 1617

Permalink: https://www.hzdr.de/publications/Publ-613
Publ.-Id: 613


Complexation of plutonium(V) with nitrilotracetic acid

Mahamid, A.; Becraft, I.; Nitsche, H.

  • Radiochimica Acta 68 (1995) pp. 63

Permalink: https://www.hzdr.de/publications/Publ-612
Publ.-Id: 612


Electronic and Structural Investigations of Technetium Compounds by X-ray Absorption Spectroscopy

Mahamid, A.; Bryan, J. C.; Bucher, J. J.; Burrell, A. K.; Edelstein, N. M.; Hudson, E. A.; Kaltsoyannis, N.; Lukens, W. W.; Shuh, D. K.; Nitsche, H.; Reich, T.

  • Inorganic Chemistry 34 (1995) pp. 193

Permalink: https://www.hzdr.de/publications/Publ-611
Publ.-Id: 611


Multinuclear NMR, Raman, EXAFS, and X-ray diffraction studies of uranyl carbonate complexes in near-neutral aqueous solution. X-ray structure of [C(NH2)3]6[(UO2)3(CO3)6].cntdot.6.5H2O

Allen, P. G.; Bucher, J. J.; Clark, D. L.; Edelstein, N. M.; Ekberg, S. A.; Gohdes, J. W.; Hudson, E. A.; Kaltsoyannis, N.; Lukens, W. W.; Neu, M. P.; Palmer, P. D.; Reich, T.; Shuh, D. K.; Tait, C. D.; Zwick, B. D.

Permalink: https://www.hzdr.de/publications/Publ-610
Publ.-Id: 610


Theoretische Modellierung des Druckbehälters und der Druckbehältereinbauten eines Siedewasserreaktors (SWR), Abschlußbericht

Altstadt, E.; Scheffler, M.; Weiß, F.-P.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-147 (nur für den internen dienstlichen Gebrauch), August 1996
    ISSN: 1436-3976

Permalink: https://www.hzdr.de/publications/Publ-609
Publ.-Id: 609


Modifizierung mechanischer und korrosiver Oberflächeneigenschaften von Magnesium durch Ionenimplantation

Chudoba, T.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-143 (Dissertation an der Fakultät Mathematik und Naturwissenschaften der TU Dresden)
    ISSN: 1436-3976

Downloads:

Permalink: https://www.hzdr.de/publications/Publ-608
Publ.-Id: 608


Synthesis of "3+1"-mixed-ligand oxorhenium(V) complexes containing modified 3,17ß-Estradiol

Wüst, F.; Spies, H.; Johannsen, B.

  • Bioorganic and Medicinal Chemistry Letters 6 (1996) 22 pp.2729-2734

Permalink: https://www.hzdr.de/publications/Publ-607
Publ.-Id: 607


Layered structure diagnostic and optical modelling of c-BN

Plass, M.; Fukarek, W.; Kolitsch, A.; Möller, W.

  • Nuclear Instruments and Methods in Physics Research B 127/128 (1997) 857

Permalink: https://www.hzdr.de/publications/Publ-606
Publ.-Id: 606


The nuclear liquid-gas phase transition: Present status and future perspectives

Pochodzalla, J.; Immé, G.; u. a.; Begemann-Blaich, M.; u. a.; Möhlenkamp, T.; Seidel, W.; Kunze, W. D.; Schüttauf, A.; Kunde, G. J.; u. a.; Bassini, R.; u. a.; Trzcinski, A.; Zwieglinski, B.

  • Other report
    GSI-Preprint-96-31

Permalink: https://www.hzdr.de/publications/Publ-605
Publ.-Id: 605


LAST MINUTE FROM ALADIN: Temperature measurements in Au+Au reactions at relativistic energies

Immé, G.; u. a.; Begemann-Blaich, M.; u. a.; Möhlenkamp, T.; Seidel, W.; Kunze, W. D.; Schüttauf, A.; Pochodzalla, J.; Kunde, G. J.; Gaff, S.; Bassini, R.; u. a.; Trzcinski, A.; Zwieglinski, B.

  • Other report
    GSI-Preprint-96-30, Juli 1996

Permalink: https://www.hzdr.de/publications/Publ-604
Publ.-Id: 604


Determination of critical exponents in nuclear systems

Müller, W. F. J.; u. a.; Bassini, R.; u. a.; Blaich, T.; Immé, G.; u. a.; Kunze, W. D.; u. a.; Möhlenkamp, T.; Seidel, W.; Trzcinski, A.; u. a.

  • Other report
    GSI-Preprint-96-29

Permalink: https://www.hzdr.de/publications/Publ-603
Publ.-Id: 603


Universaly of Spectator Fragmentation at Relativistic Bombarding Energies

Schüttauf, A.; u. a.; Kunze, W. D.; u. a.; Blaich, T.; Bowman, D. R.; u. a.; Charity, R. J.; u. a.; Cosmo, A.; u. a.; Ferrero, A.; u. a.; Immé, G.; u. a.; Möhlenkamp, T.; Seidel, W.; Trzcinski, A.; u. a.

  • Other report
    GSI-Preprint-96-26, Juni 1996
  • Nuclear Physics A 607 (1996) pp. 457-486

Permalink: https://www.hzdr.de/publications/Publ-602
Publ.-Id: 602


Focused ion beam system with high current density

Bischoff, L.; Hesse, E.; Janssen, D.; Naehring, F.; Nötzold, F.; Schmidt, G.; Teichert, J.

The project of the IMSA-100 focused ion beam system is presented. The main goal of the system is to archieve an ion current density > 10 A/cm2. The ion-optical column consists of a liquid metal ion source, two electrostatic lences, beam blanking plates, and two octupole stigmators. A lithium ion source has been developed.

  • Microelectronic Engineering 13 (1991) pp. 367-370

Permalink: https://www.hzdr.de/publications/Publ-601
Publ.-Id: 601


High current FIB system for micromechanics application

Bischoff, L.; Hesse, E.; Hofmann, G.; Naehring, F.; Probst, W.; Schmidt, B.; Teichert, J.

A high current Focused Ion Beam (FIB) system, designd to achieve current dendities above 10 A/cm2 is presented. The system parameters and properties are discussed and first applications in the field of micromechanics are shown.

  • Microelectronic Engineering 21 (1993) pp. 197-200

Permalink: https://www.hzdr.de/publications/Publ-600
Publ.-Id: 600


Measurement of the cerebral uptake and meta-bolism of L-6-[18F]Fluoro-3,4-dihydroxyphenylalanine (18FDOPA) in newborn piglets

Brust, P.; Bauer, R.; Bergmann, R.; Walter, B.; Steinbach, J.; Füchtner, F.; Will, E.; Linnemann, H.; Obert, M.; Zwiener, U.; Johannsen, B.

  • Book (Authorship)
    Neurochemistry: Cellular, Molecular, and Clinical Aspects, Book Article, Plenum Publishing Cooperation, Section 43: PET Imaging of Receptors;1149-1155

Permalink: https://www.hzdr.de/publications/Publ-599
Publ.-Id: 599


A new type of band crossing at large deformation

Harder, A.; Dönau, F.; Lieb, K. P.; Cunningham, R. A.; Gelletly, W.; Gross, C. J.; Hannachi, F.; Kabadiyski, M. K.; Roth, H. A.; Rudolph, D.; Simpson, J.; Skeppstedt, Ö.; Varley, B. J.; Warner, D. D.

  • Physics Letters B 374 (1996) pp. 277-282

Permalink: https://www.hzdr.de/publications/Publ-597
Publ.-Id: 597


Optimization on Rugged Landscapes: A New General Purpose Monte Carlo Approach

Dittes, F.-M.

  • Physical Review Letters 76 (1996) 25 pp. 4651-55

Permalink: https://www.hzdr.de/publications/Publ-596
Publ.-Id: 596


First Observation of the Scissors Mode in a Gamma-Soft Nucleus: The Case of 196Pt

von Brentano, P.; Eberth, J.; Enders, J.; Esser, L.; Herzberg, R.-D.; Huxel, N.; Meise, H.; von Neumann-Cosel, P.; Nicolay, N.; Pietralla, N.; Prade, H.; Reif, J.; Richter, A.; Schlegel, C.; Schwengner, R.; Skoda, S.; Thomas, H. G.; Wiedenhöver, I.; Winter, G.; Zilges, A.

A nuclear resonance fluorescence experiment with one of the newly developed
highly efficient EUROBALL cluster detectors has been performed on the gamma-soft
nucleus 196Pt. Magnetic dipole excitations were observed between
2 and 3.5 MeV excitation energiy. They are interpreted as the main fragments
of the scissors mode based on the measured excitation strengths and branching
ratios. A strong gamma decay, which we believe to be an E2 decay of the
scissors mode to the 21 + state, is observed. It allows
an extraction of the effective boson quadrupole charges in the interacting
boson model.

Permalink: https://www.hzdr.de/publications/Publ-595
Publ.-Id: 595


Bericht der Frühjahrstagung der Studiengruppe für Elektronische Instrumentierung vom 25. bis 27. März 1996 in Karlsruhe

Gabriel, F.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-141
    ISSN: 1436-3976

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Permalink: https://www.hzdr.de/publications/Publ-594
Publ.-Id: 594


Plasma source ion implantation of oxygen and nitrogen in aluminum

Günzel, R.; Wieser, E.; Richter, E.; Steffen, H. J.

  • Journal of Vacuum Science and Technology Part B 12 (1994) 2

Permalink: https://www.hzdr.de/publications/Publ-593
Publ.-Id: 593


Added Stiffness Relating to Small Motions of Two Concentric Cylinders Submitted to Axial Annular Incompressible Flow

Zoller, J.

Abstract
Axial incompressible, viscous flow is considered in an annular gap between two rigid cylinders. If the cylinders are displaced from their concentric positions in a certain manner, the displacement will cause reaction forces exerted by the fluid pressure. In this investigation the pressure fluctuations caused by the displacement of the structures are approximated by analytical means. Pressure fluctuations in phase with acceleration and velocity of the structure are not calculated here. Stationary flow is considered, because structural displacements are assumed to be small.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-146 August 1996
    ISSN: 1436-3976

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Permalink: https://www.hzdr.de/publications/Publ-592
Publ.-Id: 592


Schwankungen des Massenstroms bei Druckentlastungsvorgängen

Lucas, D.; Prasser, H.-M.

Bei der linearen Stabilitätsanalyse des Abblaseprozesses aus Druckbehältern mit zweiphasigem, aufwallendem Medium wurden Instabilitätsbereiche mit starken Massenstrompulsationen in der Abblaseleitung gefunden. Entscheidender Mechanismus ist die Rückkopplung zwischen Gemischspiegelschwankung, kritischer Ausströmrate und Druckabfallgeschwindigkeit. Für die Stabilitätsanalyse wurden analytische Modelle zur Beschreibung des šbertragungsverhaltens aufgestellt. Es wurden Nyquist-Diagramme für verschiedene Parameterkombinationen untersucht und so die Instabilitätsbereiche identifiziert. Die Schwingneigung wird durch hohe Gasgehalte an der Entlastungsarmatur, eine große Verzögerungszeit (Länge der Abblaseleitung) und geringe Höhen der Schaumzone befördert.

  • Lecture (Conference)
    3. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit", Köthen, 7.-8.11.1996
  • Contribution to proceedings
    3. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit", Köthen, 7.-8.11.1996, Preprints, S. 233-240

Permalink: https://www.hzdr.de/publications/Publ-591
Publ.-Id: 591


Investigations of an externally heated storage vessel

Aszodi, A.; Liewers, P.; Krepper, E.; Prasser, H.-M.

Storage tanks for fluids are widely used industrial facilities. As a consequence of an external fire, the heat-up of the inventory may lead to the evaporation of the liquid and to release of significant quantities of dangerous gases into the environment. Experimental investigations performed in FZ-Rossendorf have shown that the liquid inventory behaves very differently depending on the mode of heating. Bottom heating leads to an irregular thermoconvective motion of the liquid, which causes good mixing, so that saturation is reached at all places inside the tank approximately at the same time. The maximum enthalpy of the liquid always remains close to the average value. If the vessel is heated from the side, a stable temperature stratification is observed leading to large temperature gradients. Evaporation can start much earlier than the average temperature reaches saturation.
In order to clarify the physical nature of the details of the heating-up and the evaporation process in simple geometrical boundary conditions a two-dimensional mathematical model was developed, which includes also evaporation and two-phase flow. The aim of the simulations was, to understand the basic phenomena observed during the experiment.
To avoid fast temperature increase at the fluid surface in the case of side wall heating, the insertion of baffle plates inside the vessel was investigated by additional calculations using the CFD-code CFX-4.

  • Poster
    3. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit", Köthen, 7.-8.11.1996, Tagungsband S.251 - 258
  • Contribution to proceedings
    3. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit", Köthen, 7.-8.11.1996, Tagungsband S.251 - 258

Permalink: https://www.hzdr.de/publications/Publ-590
Publ.-Id: 590


Anwendung neuronaler Netze zur Identifizierung gefährlicher Betriebszustände in Chemieanlagen

Hessel, G.; Schmitt, W.; van der Vorst, K.; Weiß, F.-P.

  • Other report
    Preprint - GVC / VDI Fachtagung in Köthen, 7. - 8. November 1996, S. 141-147

Permalink: https://www.hzdr.de/publications/Publ-589
Publ.-Id: 589


Thermal dilepton and open charm signals versus hard initial yields in heavy-ion collisions at RHIC and LHC energies

Kämpfer, B.; Pavlenko, O. P.

Abstract
The hard initial production of open charm and dileptons is compared with possible thermal signals in heavy-ion collisions at RHIC and LHC energies. Our approach is based on the perturbative QCD mini-jet mechanism of quark-gluon matter formation. The thermal dilepton signal is found to rise much stronger as compared to the hard Drell - Yan background with increasing collider energy and clearly dominates at LHC energy. Oppositely, open charm stems from initial hard production. A possible rnanifestation of gluon shadowing at RHIC and LHC energies is discussed.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-144 Preprint
    ISSN: 1436-3976
  • Physics Letters B 391 (1997) pp. 185-190

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Permalink: https://www.hzdr.de/publications/Publ-588
Publ.-Id: 588


Retropane - a new Rhenium-Complex as a potential Ligand to label the Dopamin-Transporter

Hoepping, A.; Spies, H.; Johannsen, B.

  • Bioorganic and Medicinal Chemistry Letters 6 (1996) 23 pp. 2871-2874

Permalink: https://www.hzdr.de/publications/Publ-587
Publ.-Id: 587


Technetium and Rhenium Complexes with Thioether Ligands, 5 Synthesis and Structural Characterization of Neutral Oxorhenium (V) Complexes with Tridentate Dithioethers

Pietzsch, H.-J.; Reisgys, M.; Spies, H.; Leibnitz, P.; Johannsen, B.

  • Chemische Berichte, Recueil 1997, 130, 357-361

Permalink: https://www.hzdr.de/publications/Publ-586
Publ.-Id: 586


Comparison of measured and calculated dose for plasma source ion implantation into 3-D objects

Mändl, S.; Barradas, N.; Brutscher, J.; Günzel, R.; Möller, W.

  • Nuclear Instruments and Methods in Physics Research B 127/128 (1997) 996-999

Permalink: https://www.hzdr.de/publications/Publ-585
Publ.-Id: 585


Pulsationen bei der Druckentlastung von Reaktoren

Lucas, D.

During two-phase blowdown from pressure vessels considerable pulsations of the discharged mass flow rate were found. Regions of instability were predicted by a linear stability analysis. The oscillations are caused by the following feedback circuit: boil up - level movement - void fraction of the discharging mixture - critical discharge rate - velocity of pressure decrease - boil up.

  • Lecture (Conference)
    ACHEMA '97, Frankfurt/M., 9.-14.6.1997

Permalink: https://www.hzdr.de/publications/Publ-583
Publ.-Id: 583


Messung der Volumenströme Gas und Flüssigkeit in einer Zweiphasenströmung mit Ultraschall und Mustererkennung

Kossok, N.; Prasser, H.-M.; Schütz, P.

  • Lecture (Conference)
    Kraftwerkstechn. Kolloquium 1996, Dresden, 29.-30.10.96
  • Contribution to proceedings
    Kraftwerkstechnisches Kolloquium, Dresden, 29. -30. Oktober 1996, Tagungsband S. 121

Permalink: https://www.hzdr.de/publications/Publ-582
Publ.-Id: 582


Verhalten von Lagertanks bei externem Feuer

Krepper, E.; Aszodi, A.

Wenn ein zylindrischer Lagertank durch ein externes Feuer von der Seite intensiver Wärmeeinwirkung ausgesetzt ist, so setzt der Massenverlust infolge von Dampffreisetzung viel eher ein, als im Fall einer Wärmezuführung vom Behälterboden. Mittels eines vereinfachten Modells konnten die Details des Erwärmungsprozesses und die Ursachen für das unterschiedliche Verhalten in Abhängigkeit von der Art und Weise der Wärmezufuhr erklärt werden. Die ZUfuhr vom Boden führt zu einer irregulären thermischen Konvektion und damit einer guten Durchmischung des Fluids, so daß die Sättigungstemperatur an allen Punkten im Behälter nahezu gleichzeitig erreicht wird. Die maximale Enthalpie im Behälter verbleibt während der gesamten Zeit nahe dem Mittelwert. Wird der Behälter von der Seite beheizt, so bildet sich eine stabile horizontale Temperaturschichtung heraus. Die Bildung von Dampf erfolgt bereits lange bevor die mittlere Temperatur den Siedepunkt erreicht hat. Passive konstruktive Maßnahmen, wie der Einbau von Prallplatten, können die Schichtung stören, das verstärkte Aufheizen an der Oberfläche vermeiden und die Freisetzung von Dampf verzögern. Eine durchgreifende Vermischung des flüssigen Inhalts konnte jedoch nicht erreicht werden. Die genaue Gestalt und die Wirkung dieser Prallplatten hängt von der konkreten Behältergeometrie ab und läßt sich weiter optimieren.

  • Lecture (Conference)
    ACHEMA '97, Frankfurt/M., 9.-14.6.1997

Permalink: https://www.hzdr.de/publications/Publ-581
Publ.-Id: 581


Untersuchung von Zweiphasenströmungen gasförmig / flüssig mit Positronenemittern

Hensel, F.

Die Methode der Positronen-Emissions-Tomographie (PET, Positron Emission Tomography) wird zur Untersuchung von Zweiphasenströmungen flüssig / gasförmig angewandt. PET ist ein bildgebendes Verfahren, das für die Nuklearmedizin entwickelt wurde. Im medizinischen Bereich wird diese Technik hauptsächlich als nichtinvasives Untersuchungsverfahren für die quantitative Erfassung von Stoffwechselvorgängen in-vivo genutzt. Die hier vorgestellten Untersuchungen zur Methodik der Anwendung von Radiotracern für Strömungsuntersuchungen wurden 1994 begonnen. Das Ziel der Arbeiten war die örtlich und zeitlich aufgelöste Erfassung von Vermischungs- und Transportprozessen sowie die Messung der Dichte von zweiphasigen Medien. Zur Dichtemessung wurde die Abhängigkeit der Positronenreichweite von der Dichte des Materials ausgenutzt. Bei den entsprechenden Experimenten kam eine örtlich fixierte Positronenquelle (45Ti) zum Einsatz. Desweiteren wurden Messungen zum Stofftransport in Blasenströmungen durchgeführt, hier wurden flüssige Tracer mit dem Nuklid 18F eingesetzt.

  • Lecture (Conference)
    XXVIII. Kraftwerkstechnisches Kolloquium und 6. Kolloquium Meßtechnik für Energieanlagen 1996, Dresden, 29.-30.10.96
  • Contribution to proceedings
    in Kaiser, E.; Nöther, K. (Hrsg): Meßtechnik zur Untersuchung von Vorgängen in thermischen Energieanlagen. Tagung Dresden, 29./30. Oktober 1996. Beitragsmanuskripte Bd. 1 S. 101. ISBN 3-86005-168-7
  • Poster
    XXVIII. Kraftwerkstechnisches Kolloquium und 6. Kolloquium Meßtechnik für Energieanlagen 1996, Dresden, 29.-30.10.96

Permalink: https://www.hzdr.de/publications/Publ-580
Publ.-Id: 580


Determination of Crack-Initiation Toughness by Impact and Dynamic Testing

Richter, H.; Böhmert, J.; Viehrig, H.-W.

The critical J-integral (Jid) can be useful as toughness parameter at initiation of stable crack growth. Under the condition of the impact bending test the critical step for evaluating of Jid is the detection of the crack initiation point on the impact load displacement curve. In this paper the crack initiation is determined by using emission of acoustic waves (AE). The experimental techniques used to evaluate Jid include both instrumented impact testing based on 300 J pendulum impact tester with a piezoelectric broadband AE sensor within the impact tup and dynamic 3 point bending loading with a servohydraulic test machine and additional AE sensors on the specimen.
Different kind of pulses of the AE signals can be observed. One of them corresponds with crack initiation. The evidence of initiation at this point was confirmed by single and multiple specimen methods.

  • Lecture (Conference)
    Proc. of the 11th European Conference on Fracture - ECF 11, Poitiers-Futurscope, France, Sept. 1996, Vol. III, pp. 2001 - 2006
  • Contribution to proceedings
    Proc. of the 11th European Conference on Fracture - ECF 11, Poitiers-Futurscope, France, Sept. 1996, Vol. III, pp. 2001 - 2006

Permalink: https://www.hzdr.de/publications/Publ-579
Publ.-Id: 579


DYN3D - A 3-DIMENSIONAL CORE MODEL FOR STEADY STATE AND TRANSIENT ANALYSIS IN THERMAL REACTOR

Grundmann, U.; Rohde, U.

The 3D core model DYN3D developed firstly for analyses of transients in thermal reactors with hexagonal fuel assemblies was extended by a new version DYN3D/R for reactors with quadratic fuel elements. The method used in Cartesian geometry is described. Numerical results for benchmarks as the NEACRP rod ejection benchmarks are compared with the reference solutions. Results of uncontrolled withdrawal of control rod bank are shown. The efficiency of steady-state neutronic calculation by using multiprocessor workstation is presented.

  • Lecture (Conference)
    Int. Conf. on Physics of Reactors, 16.-20.9.1996, Mito, Japan, Proceedings pp. J-70 - J-79
  • Contribution to external collection
    Int. Conf. on Physics of Reactors, 16.-20.9.1996, Mito, Japan, Proceedings pp. J-70 - J-79

Permalink: https://www.hzdr.de/publications/Publ-578
Publ.-Id: 578


Preparation and Characterization of Novel Mixed-Ligand Complexes Bearing up to Four Ester Groups

Seifert, S.; Hoepping, A.; Klostermann, K.; Spies, H.; Johannsen, B.

  • Applied Radiation and Isotopes, 48 (1997) 943-948

Permalink: https://www.hzdr.de/publications/Publ-577
Publ.-Id: 577


Diphoton rates from thermalized matter resulting in ultra-relativistic heavy-ion collisions

Hentschel, M.; Kämpfer, B.; Pavlenko, O. P.; Redlich, K.; Soff, G.

Abstract
Diphoton radiation off strongly interacting matter resulting from ultrarelativistic heavy-ion collisions is estimated for SPS and RHIC conditions. At SPS emrgies tha thermal diphoton signal competes strongly with the Drell - Yan like background. For given charged-particle rapidity density a scenario with deconfinement transition predicts a larger diphoton yield than a scenario without phase transition. For RHIC energies we find that radiation from initially undersaturated (but gluon-rich) deconfined matter overwhelms the hadron gas and the Drell - Yan like diphotons in the invariant mass window 1 < M < 2.5 GeW. Due to this the so-called M1 scaling is approximately obtained and can serve as additional tsol for discriminating radiation from quark-gluon matter.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-142 Preprint
    ISSN: 1436-3976
  • Other report
    GSI-Preprint-96-37, August 1996
  • Z. Phys. C 75, 333-339 (1997)

Downloads:

Permalink: https://www.hzdr.de/publications/Publ-576
Publ.-Id: 576


Can hexadecapole deformation lead to Delta I = 2 staggering in superdeformed bands?

Dönau, F.; Frauendorf, S.; Meng, J.

  • Physics Letters B 387(1996) pp. 667-672

Permalink: https://www.hzdr.de/publications/Publ-574
Publ.-Id: 574


Abbau Polychlorierter Biphenyle (PCB) in Pflanzen und bei Kompostierungsprozessen - Untersuchungen mit [14C]PCB Nr. 77

Bubner, M.; Bock, C.; Kolb, M.; van Raaij, E.; Bruhn, G.; Heise, K.-H.; Nitsche, H.; Harms, H.; Förster, U.

  • Poster
    Gesellschaft Deutscher Chemiker, 7.-10.10.1996, Ulm

Permalink: https://www.hzdr.de/publications/Publ-573
Publ.-Id: 573


Interaction of Uranium (VI) with Silicon Species in aqueous Solutions

Moll, H.; Geipel, G.; Reich, T.; Brendler, V.; Bernhard, G.; Nitsche, H.

  • Poster
    NRC4-Konferenz in St. Malo (Frankreich) 8.-13.9.1996

Permalink: https://www.hzdr.de/publications/Publ-572
Publ.-Id: 572


Radium Sorption on Sandy and Clayey Sediments of the Upper Saxon Elbe River Valley

Baraniak, L.; Thieme, M.; Funke, H.; Bernhard, G.; Nindel, K.; Schreyer, J.; Nitsche, H.

The interaction of radium with characteristic sediments of the upper Saxon Elbe river valley was investigated with a two-fold aim: to provide key data for transport modelling within the framework of mining site restoration and to study the influence of barium-radium-sulfate coprecipitation on the radium adsorption behaviour. For this purpose sorption measurements were carried out on site-specific sediments (different kinds of sandstone, claystone and lime marl) using (1) original low-mineralized groundwater of this area, (2) typical acidic mine water coming from sulfuric acid residues of a former in-situ leaching process (~3 g/L SO42-, pH _ 2.5) and (3) groundwater which was contaminated by 2% mine water. The distribution ratios (Rd) were determined by batch experiments using an 8 weeks' equilibration at aquifer temperature (14C).

Radium sorption from pure and slightly contaminated groundwater onto limonite-rich turonian sandstone is characterized by relatively low distribution ratios (60-180 mL/g). When contacted with mine water, the sorption was enhanced by more than 20-fold compared to the pure and contaminated groundwaters. For the typical lime marl, the strongest sorption occured from the groundwater (390-520 mL/g) and a slightly reduced sorption took place from the acidic mine water.

In addition, the radium sorption was studied as a function of the Ba2+ and SO42- concentration. The results were discussed in terms of the ion product and the solubility product. Conclusions were drawn regarding the predominant sorption mechanisms: coprecipitation, surface complexation and ion exchange.

The long-term migration behaviour in the aquifers of the south-east Saxon Elbe basin was calculated on the basis of Hadermanns' equation, considering convection, dispersion, retardation and radioactive decay.

  • Lecture (Conference)
    4 th International Conference on Nuclear and Radiochemistry, Saint Malo, France, Sept.8-13, 1996

Permalink: https://www.hzdr.de/publications/Publ-571
Publ.-Id: 571


Uranium (VI) Sulfate Complexation studied by Time-Resolved Laser-Induced Fluorescence Spectroscopy (TRLFS)

Geipel, G.; Brachmann, A.; Brendler, V.; Bernhard, G.; Nitsche, H.

  • Radiochimica Acta 75, 199-204 (1996)

Permalink: https://www.hzdr.de/publications/Publ-570
Publ.-Id: 570


Nanometre-sized Silver Halides Entrapped in SiO2 Matrices

Matz, W.; Pham, T.; Mücklich, A.

The formation of nanocrystals after implantation of silver
alone as well as together with the halogen ions Cl, Br, and I into a SiO2
layer of about 100 nm was studied by X-ray diffraction and transmission
electron microscopy. The co-implantation of Ag and Cl/Br results in the
formation of cubic AgX-crystals which are stable in size under annealing.
The co-implantation of Ag and I as well as single Ag implantation result
in Ag crystallites, which grow under annealing. The annealing procedure
causes a redistribution of the particles within the layer.

  • Journal of Materials Science 33 (1998) 155-159

Permalink: https://www.hzdr.de/publications/Publ-569
Publ.-Id: 569


Positronen-Emissions-Tomographie bei der Schwerionentherapie. Ein Verfahren zur in-situ Kontrolle der Tumorbehandlung mit Strahlen schwerer Ionen

Enghardt, W.

  • Physikalische Blätter 52 (1996) 9 pp. 874-875

Permalink: https://www.hzdr.de/publications/Publ-568
Publ.-Id: 568


Radiation damage and annealing behaviour of Ge+ -implanted SiC

Pacaud, Y.; Stoemenos, J.; Brauer, G.; Yankov, R. A.; Heera, V.; Voelskow, M.; Kögler, R.; Skorupa, W.

In recent years, single crystal SiC has become an important electronic material due to its excellent physical and chemical properties. The present paper reports a study of the defect reduction and recrystallization during annealing of Ge+-implanted 6H-SiC. Implants have been performed at 200 keV with doses of 1x1014 and 1x1015 cm-2. Furnace annealing has been carried out at temperatures of 500 °C, 950 °C and 1500 °C. Three analytical techniques including Rutherford backscattering spectrometry in conjunction with channelling (RBS/C), positron annihilation spectroscopy (PAS) and cross-sectional transmission electron microscopy (XTEM) have been employed for sample characterization. It has been shown that damage removal is more complicated than in ion-implanted Si. The recrystallization of amorphized SiC layers has been found to be unsatisfactory for temperatures up to 1500 °C. The use of ionbeam-induced epitaxial crystallization (IBIEC) has been more successfull as lattice regrowth, altough still imperfect, has been observed to occur at a temperature as low as 500 °C.

  • Nuclear Instruments and Methods in Physics Research B 120 (1996) 177-180

Permalink: https://www.hzdr.de/publications/Publ-567
Publ.-Id: 567


Proximity gettering of copper in separation-by-implanted-oxygen structures

Yankov, R. A.; Hatzopoulos, N.; Skorupa, W.; Danilin, A.

  • Lecture (Conference)
    E-MRS, Spring Meeting, Strasbourg, France, 4-7 June 1996
  • Nuclear Instruments and Methods in Physics Research B 120 (1996) 60

Permalink: https://www.hzdr.de/publications/Publ-566
Publ.-Id: 566


A study of the blue photoluminescence emission from thermally-grown, Si+ -implanted SiO2 films after short-time annealing

Skorupa, W.; Yankov, R. A.; Rebohle, L.; Fröb, H.; Böhme, T.; Leo, K.; Tyschenko, I. E.; Kachurin, G. A.

Thermal SiO2 films have been implanted with Si+ ions using double-energy implants (200 + 100 keV) at a substrate temperature of about -20 °C to total doses in the range 1.6 x 1016 - 1.6 x 1017 cm-2 followed by short-time thermal processing, in order to form a Si nanostructure capable of yielding blue photoluminescence (PL). The intensity and the peak position of the PL band have been investigated as a function of ion dose, manner of heat treatment, anneal time and anneal temperature. For the formation
of blue PL emitting centres, optimum processing conditions in terms of excess Si concentration and overall thermal budget are mandatory. The nature of the observed blue emission is discussed.

  • Lecture (Conference)
    E-MRS, Spring Meeting, Strasbourg, France, June 4-7, 1996
  • Nuclear Instruments and Methods in Physics Research B 120 (1996)106

Permalink: https://www.hzdr.de/publications/Publ-565
Publ.-Id: 565


Damage behaviour and annealing of germanium implanted 6H-SiC

Pacaud, Y.; Heera, V.; Yankov, R. A.; Kögler, R.; Brauer, G.; Voelskow, M.; Skorupa, W.; Stoemenos, J.; Perez-Rodriguez, A.; Calro-Barrio, L.; Serre, C.; Morante, J.; Barklie, R.; Collins, M.; Holm, B.

The present paper reports a study of the defect reduction
and recrystallization during annealing of Ge+-implanted 6H-SiC. Implants
have been performed at 200 keV with doses of 1x1014 and 1x1015 cm-2. Furnace
annealing has been carried out at temperatures of 500°, 900° and
1500 °C. Several analytical techniques including Rutherford backscattering
spectrometry in conjunction with channeling (RBS/C), cross-sectional transmission
electron microscopy (XTEM), positron annihilation spectroscopy (PAS), Raman
scattering (RS), and electron paramagnetic resonance (EPR) measurements
have been employed for sample characterization. It has been shown that
damage removal is more complicated than in ion-implanted Si. Using PAS
deeply diffusion vacancy-like defects were found far below the region defined
by TRIM as containing the maximum amount of nuclear energy deposition.
The amorphized SiC is characterized by carbon dangling bonds as revealed
by EPR. The recrystallization of amorphized SiC layers has been found to
be unsatisfactory for temperatures up to 1500 °C. The use of ion-beam-induced
epitaxial crystallization (IBIEC) has been more successful as lattice regrowth,
altough still imperfect, has been observed to occur at a temperature
as low as 500 °C.

  • Contribution to external collection
    IIT '96, Austin, Texas, USA; Proc. 11th Int. Conf. Ion Implantation Technology; The Inst. of Electrical and Electronics Eng., Piscataway, USA, 1997, p. 713

Permalink: https://www.hzdr.de/publications/Publ-564
Publ.-Id: 564


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