Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

"Online First" included
Approved and published publications
Only approved publications

40435 Publications

Channeling radiation of electrons in natural diamond crystals and their coherence and occupation lengths

Nething, U.; Genz, H.; Groening, L.; Hoffmann-Stascheck, P.; Richter, A.; Hormes, J.; Höfer, M.; Sellschop, J. P. F.; Toepffer, C.; Weber, M.

Permalink: https://www.hzdr.de/publications/Publ-472
Publ.-Id: 472


Experimental determination of the linewidth of parametric X-ray radiation at electron energies below 10 MeV

Freudenberger, J.; Galemann, M.; Genz, H.; u. a.; Morokhovskii, V. L.; Nething, U.; Prade, H.; Zahn, R.; Sellschop, J. P. F.

Permalink: https://www.hzdr.de/publications/Publ-471
Publ.-Id: 471


The Code DYN3DR for Steady-State and Transient Analyses of Light Water Reactor Cores with Rectangular Geometry

Grundmann, U.

The code DYN3D/M2 was developed for steady-state and transient analysis of reactor cores with hexagonal fuel assemblies. The new version DYN3DR contains a method for neutron kinetics solving the two group neutron diffusion equation by a nodal method for cartesian geometry. The thermal-hydraulic model FLOCAL simulating the two phase flow of coolant and the fuel rod hehaviour is used in the two versions. The fundamentals of the neutron kinetics are described. The accuracy of the code is demonstated by comparisons with the results of rod ejection benchmarks for PWR with rectangular fuel assemblies. The developed algorithm of neutron kinetics are suitable for using parallel processing. The speedup of neutronic calculation is demonstrated for a steady state solution of diffusion equation.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-114 November 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-470
Publ.-Id: 470


Nachuntersuchungen an Reaktordruckbehältern des stillgelegten KKWs Greifswald - eine Chance zur realistischen Bewertung der Neutronenversprödung

Böhmert, J.; Törrönen, K.; Valo, M.

  • Lecture (Conference)
    Jahrestagung Kerntechnik 1996
  • Contribution to proceedings
    Jahrestagung Kerntechnik '96, Mannheim, 21. - 23. Mai 1996, Tagungsbericht S. 176 -179

Permalink: https://www.hzdr.de/publications/Publ-469
Publ.-Id: 469


Asymmetry of the Dielectron Emission Rate in an Isospin-Asymmetric Pion Medium

Kämpfer, B.; Gumalov, T. I.; Titov, A. I.

Asymmetry of the Dielectron Emission Rate in an
Isospin-Asymrnetric Pion Medium
T.I. GULANOVA,1 A. I. TITOV
Bogoliubov Theoretical Laboratory, Joint Institute for Nuclear Research,
141980 Dubna, Russia
B. Kämpfer
Research Center Rossendorf, Institute for Nuclear and Hadron Physics,
PF 510119, 01314 Dresden, Germany
Institute for Theoretical Physics, Technical University Dresden,
Mommsenstr. 13, 01062 Dresden, Germany

Abstract

The dielectron emission by pion annihilation in an isospin-asymmetric pion gas at finite temperature is considered. Due to the differente between the longitudinal and tramverse parts of the in-medium p meson self-energy a specific asymmetry of the rates is caused for electron pairs with relative momenta perpendicular or parallel to the total pair momentum. This asymmetry may be considered as a sensitive signal of in-medium-modifications of the p properties.
1Permanent- address: Physical and Technical Institute of Uzbek Academy of Sciences, 700084 Tashkent,
RepubIic Uzbekistan

  • Physics Letters B 372 (1996) pp. 187-192
  • Open Access Logo Forschungszentrum Rossendorf; FZR-113 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-467
Publ.-Id: 467


Erweitertes Überwachungsprogramm der Strahlenversprödung durch Probenrekonstitution

Viehrig, H.-W.; Böhmert, J.

  • Lecture (Conference)
    Jahrestagung Kerntechnik 1996, Mannheim, 1996, Tagungsbericht, S. 172 ff.
  • Contribution to proceedings
    Jahrestagung Kerntechnik 1996, Mannheim, 1996, Tagungsbericht, S. 172 ff.

Permalink: https://www.hzdr.de/publications/Publ-466
Publ.-Id: 466


Bericht der Herbsttagung der Studiengruppe für Elektronische Instrumentierung vom 2. bis 4. Oktober 1995 in Graz

Gabriel, F.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-116
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-465
Publ.-Id: 465


Ionenstrahlsynthese von Nanoclustern

Schmidt, B.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-115
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-464
Publ.-Id: 464


Diffuse scattering of neutrons in thermally oxidized silicon

Eichhorn, F.; Podurets, K. M.; Shilstein, S. S.

Permalink: https://www.hzdr.de/publications/Publ-463
Publ.-Id: 463


Berechnung von Neutronenflußdichteschwankungen in WWER-Druckwasserreaktoren infolge strömungsinduzierter Schwingungen

Hollstein, F.

Zusammenfassung
Dargestellt wird ein in sich geschlossenes 3D-Modell zur Berechnung der ortsabhängigen Übertragungsfunktionen für stochastische Schwingungen der Regel- und Brennelemente in Reaktoren vom Typ WWER-440 unter Berücksichtigung der heterogenen Brennstoffbeladung realer Spaltzonenkonfigurationen. Basis sind die nodalen Bilanz-Gleichungen zur Berechnung der stationären Neutronediußverteilung in der Eingruppen-Diffusionsnäherung für 3D-Nodes in Hexagonal-Z-Geometrie. Die Absorberteiie eines WWER- 440-Regelelements werden durch entsprechende Randbedingungen für die Diffusionsgleichun im neutronenphysikalischen Reaktormodell erfaßt. Die Modellierung der Rauschquellen erfolgt auf der Grundlage einer Sweigruppen-Diffusionsnäherung. Die Neutronenflußdichteschwankungen werden dabei durch Störungen bei der Kickstreuung thermischer Neuttonen in "Absorber-Nodes" bzw. durch stochastische Schwankungen der Zweigruppen-Wirkungsquerschiiitte an den radialen Nodegrenzen der 'Brennstoff-Nodes" beschrieben. Zur Berechnung der Ubertragungsfunktionen für die Schwankungen der Neutronenflußdichte werden die nodalen Bilanz-Gleichungen in der Prompt-Response-Approximation verwendet. Die Kopplung der Zweigruppen-Quellmodeiie für Brennstoff- und Absorberteil eines Regelelements an das nodale Eingruppen-Übertragungsmodel erfolgt im Sinne der modifizierten Eingruppen-Diffussionsnäherung.
Anhand numerischer Berechnungen werden wesentliche Charakteristika der Übertragungsfunktionen für
Regelelementschwingungen in Dwckwasserreaktoren vom Typ WWER-440 diskutiert.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-110 September 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-462
Publ.-Id: 462


Dielektrische Theorie des elektronischen Energieverlustes schwerer Ionen in Festkörpern

Mathar, R. J.

  • Other report
    Dissertation

Permalink: https://www.hzdr.de/publications/Publ-461
Publ.-Id: 461


Through-Thickness Characterization of Mechanical Properties of Russian VVER-Type and ASTM-Type Reactor Pressure Vessel Steel Forgings

Viehrig, H.-W.; Böhmert, J.; Große, M.

  • Lecture (Conference)
    und Proceedings IAEA Specialists Meeting "Neutron Embrittlement and Mitigation" vom 23.-26. Oktober 1995 in Espoo, Finnland, Proc. IWG-LMNPP-95/5, Vol. II, Session 4, paper 3

Permalink: https://www.hzdr.de/publications/Publ-460
Publ.-Id: 460


PV COVERS ELECTRICITY DEMAND How private users of 200 PV systems Match their energy consumption to the PV production

Jahn, U.; Tegtmeyer, D.; Rindelhardt, U.; Teichmann, G.

The German 1000 roofs PV programme, in which more than 2000 roof-mounted grid connected PV systems are now operating, provides invaluable information on the operational performance of the installed PV systems, the PV users and their consumption behaviour. The Institut für Solarenergieforschung (ISFH) and the Forschungszentrum Rossendorf (FZR), responsible for the organization of the 1000 roofs programme in the Federal States of Lower Saxony and Saxony, have been analysing the monitored performance and consumption data of more than 300 PV systems operating since 1991. The purpose of this work is to examine the relationship between PV system yield and electricity consumption for the realized projects and to take advantage of the first-hand information on the PV users consumption behaviour for future PV applications.

  • Lecture (Conference)
    Proceedings of the 13. European Photovoltaic Solar Energy Conference, Nice (France), 23.-27.10.1995, Volume II, p. 2247

Permalink: https://www.hzdr.de/publications/Publ-459
Publ.-Id: 459


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

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

  • Other report
    Institutsbericht

Permalink: https://www.hzdr.de/publications/Publ-457
Publ.-Id: 457


High-affinity binding of [3H]paroxetine to caudate nucleus and microvessels from porcine brain

Brust, P.; Bergmann, R.; Johannsen, B.

Permalink: https://www.hzdr.de/publications/Publ-456
Publ.-Id: 456


Ion Beam Surface Treatment of Biomaterials

Pham, T.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-112
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-455
Publ.-Id: 455


Optimization on Rugged Landscapes: A Democratic Approach

Dittes, F.-M.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-92 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-454
Publ.-Id: 454


Improvement of the Mechanical Surface Properties of Aluminium by High Dose Oxygen Implantation

Wieser, E.; Reuther, H.; Richter, E.

Permalink: https://www.hzdr.de/publications/Publ-453
Publ.-Id: 453


Projektabwicklung und Ergebnisse des Bund-Länder-1000-Dächer-Photovoltaik-Programmes in Sachsen

Rindelhardt, U.; Teichmann, G.; Lang, D.

Im Report werden die im Rahmen des Bund-Länder-1000-Dächer-Photovoltaik-Programmes in Sachsen erzielten Ergebnisse dargestellt. Insgesamt wurden auf Dächern von Ein- und Zweifamilienhäusern in den Jahren 1992 - 1994 150 netzgekoppelte Anlagen mit einer Gesamtleistung von 523 kWp errichtet. Dabei kamen Module und Wechselrichter von jeweils acht verschiedenen europäischen Herstellern zum Einsatz. Die beteiligten Fachfirmen erwarben ein breites Know-how zur Auslegung und Installation der Anlagen sowie zur architektonischen und bautechnischen Einbindung der Photovoltaikgeneratoren auf Dächern von Einfamilienhäusern. Entsprechende Ergebnisse werden zusammenfassend vorgestellt.
Die Ergebnisse des begleitenden Meßprogrammes werden im Detail diskutiert. Erstmals werden quantitative Zusammenhänge zwischen der solaren Energieproduktion und dem Eigenbedarf von Haushalten ermittelt. Der jährliche Elektroenergiebedarf von Haushalten kann durch dachmontierte PV-Anlagen unter mitteleuropäischen Bedingungen voll gedeckt werden. Die mögliche jährliche Energieproduktion einer Photovoltaikanlage in Sachsen beträgt 750 kWh/kWp, die weitere Minimierung der anlagenbedingten Verluste ist Gegenstand weiterführender Untersuchungen.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-109, September 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-452
Publ.-Id: 452


Shell-Model Study of Shears Bands in Light Pb Nuclei

Frauendorf, S.; Reif, J.; Winter, G.

Spherical shell-model calculations have been performed in the configuration space ( s1/2h9/2i13/2)
and (p1/2p3/2f5/2i13/2) for protons and neutrons, respectively, in order to interpret the sequences of strong dipole transitions found in neutron-deficient Pb isotopes. Regular dipole bands are found if several high-j protons and high-j neutron holes are interacting with neutrons in the low-spin (fp) orbitals. The calculated B(M1) values are in the order of several µN 2
for the deltaJ=1 transitions, and the crossover E2 transitions are very weak. The mechanism generating the dipole bands is found to be the same as in the tilted axis cranking mean-field description.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-451
Publ.-Id: 451


Fission and emission of intermediate mass fragments in asymmetric heavy - ion collisions investigated at the FOBOS 4pi - array

Wagner, W.; Ortlepp, H.-G.; Herbach, C.-M.; Gippner, P.; Matthies, A.; Renz, G.; Schilling, K.-D.; Penionzhkevich, Y. E.; Strekalovsky, O. V.; Zhuchko, V. E.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-105 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-450
Publ.-Id: 450


Fission of hot heavy nuclei investigated at the FOBOS 4pi - array

Wagner, W.; Ortlepp, H.-G.; Herbach, C.-M.; Gippner, P.; Matthies, A.; Renz, G.; Schilling, K.-D.; Kamanin, D. V.; Penionzhkevich, Y. E.; Strekalovsky, O. V.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-104 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-449
Publ.-Id: 449


The COMBAS fragment separator of radioactive nuclei and the FOBOS 4pi - detector for charged particles

Ortlepp, H.-G.; Wagner, W.; Dietterle, S.; Dshemuchadse, S.; Gippner, P.; Herbach, C.-M.; Aleksandrov, A. A.; Aleksandrova, I. A.; Doronin, V. N.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-103 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-448
Publ.-Id: 448


SAXS Investigation of the Structural Changes in the Plastic Zone Ahead of a Crack Tip in Ductile Metals

Große, M.; Hempel, A.; Böhmert, J.; Eichhorn, F.; Riekel, C.; Engstroem, P.

Permalink: https://www.hzdr.de/publications/Publ-447
Publ.-Id: 447


Cluster beams from a Co-Nd liquid alloy ion source

Bischoff, L.; Teichert, J.; Hesse, E.; Prewett, P. D.; Watson, J. G.

A Cobalt-Neodymium Liquid Alloy Ion Source (LAIS) is investigated with respect to ist cluster emission behaviour. Clusters and molecular ions were found. The influence of the source emission current on the cluster emission intensity and also on the cluster mass distributationis studied. The Co-Nd LAIS was used for writing patterning (implantation, sputtering) in a mass-selecting Focused Cluster Beam (FCB) system. Theoretical estimations were carried out concerning the use of the FCB for direct deposition at landing energies of about 100 eV / atom. First experimental results of cobalt FCBs are presented.

Permalink: https://www.hzdr.de/publications/Publ-446
Publ.-Id: 446


Hadron Production in pBe interactions at 14.6 GeV/c

Müller, H.

Invariant cross sections for the production of π±, K ±, p and d in pBe interactions at 14.6 GeV/c are well reproduced by calculations carried out in the framework of the Rossendorf collision model.

  • Zeitschrift für Physik A 353 (1995) pp. 237

Permalink: https://www.hzdr.de/publications/Publ-445
Publ.-Id: 445


Anwendungsmöglichkeiten neuartiger EDV-gestützter Erkennungsmethoden zur Identifikation gefährlicher Betriebszustände in Chemieanlagen

Schmitt, W.; Steiff, A.

  • Other report
    Preprints des Workshops "Reaktionsführung bei chem. Synthesen im techn. Maßstab mit Unterstützung durch moderne Methoden der EDV", Bonn, 24.5.95, S. 67 - 75

Permalink: https://www.hzdr.de/publications/Publ-443
Publ.-Id: 443


Stand und Wirtschaftlichkeit von Sonnen- und Windenergienutzung zur Stromerzeugung in Sachsen

Rindelhardt, U.

In den letzten Jahren war in Sachsen eine dynamische Entwicklung bei der Nutzung der Wind- und Sonnenenergie zu Erzeugung von Elektroenergie zu verzeichnen. Derzeit sind in Sachsen etwa Windenergieanlagen mit einer Leistung von insgesamt 20 MW und netzgekoppelte Photovoltaikanlagen mit einer Leistung von knapp 600 kW in Betrieb. Die Windenergienutzung befindet sich derzeit an der Schwelle zur Wirtschaftlichkeit (Stromgestehungskosten etwa 17 Pf/kWh), bis zum Jahr 2000 kann mit einer installierten Leistung bis zu 200 MW gerechnet werden. Demgegenüber ist Strom aus Photovoltaikanlagen noch um den Faktor 10 zu teuer.

  • Lecture (Conference)
    XXVII Kraftwerkstechnisches Kolloquium der TU Dresden, 24./25.10.1995, Tagungsband Teil I, S. 45
  • Contribution to proceedings
    XXVII Kraftwerkstechnisches Kolloquium der TU Dresden, 24./25.10.1995, Tagungsband Teil I, S. 45

Permalink: https://www.hzdr.de/publications/Publ-442
Publ.-Id: 442


Identification of Topics for Cooperation between the European Community and Eastern European Countries in the Field of Nuclear Reactor Safety, Radioactive Waste and Site Restoration

Weiß, F.-P.; Valko, J.

  • Contribution to external collection
    Study accomplished by order of EU DG XII, Rossendorf, 1995

Permalink: https://www.hzdr.de/publications/Publ-441
Publ.-Id: 441


Fuzzy-based Acoustic Leak Localization at Complicated Structures

Hessel, G.; Schmitt, W.; Weiß, F.-P.

A method for detecting and localizing leaks at complicated three-dimensional topolo-gies by measuring the leak induced structure-borne sound and by applying fuzzy pattern classification procedures has been developed. The sound patterns necessary to train the fuzzy pattern classifier are generated with simulated leaks at the original structure. RMS-values of acoustic emission sensors are used as features for char-acterizing the occurrence and the location of a leak. Fuzzy pattern classification is applied for check and calibration of the sensor lines and for leak localization as well. Several types of neural networks and the fuzzy pattern classification are compared concerning the capabilities of classification.

  • Lecture (Conference)
    Proc. of the Third European Congress on Intelligent Techiques and Soft Computing EUFIT'95, Aachen, August 28-31, 1995, pp. 1165 - 1169
  • Contribution to proceedings
    Proc. of the Third European Congress on Intelligent Techiques and Soft Computing EUFIT'95, Aachen, August 28-31, 1995, pp. 1165 - 1169

Permalink: https://www.hzdr.de/publications/Publ-440
Publ.-Id: 440


Akustische Lecküberwachung mit Neuronalen Netzen an Druckanlagen komplizierter Topologie

Hessel, G.; Schmitt, W.; Weiß, F.-P.

  • Contribution to proceedings
    DECHEMA-Jahrestagung '95, Wiesbaden, 30.5.-1.6.1995, Band 3, S. 227-228

Permalink: https://www.hzdr.de/publications/Publ-438
Publ.-Id: 438


A Finite Element Based Vibration Model for VVER-440 Type Reactors Considering the Fluid-Structure-Interaction

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

  • Lecture (Conference)
    Jahrestagung Kerntechnik 1995
  • Contribution to proceedings
    Proc. Jahrestagung Kerntechnik '95, Nürnberg, 16. - 18. Mai 1995, S. 227 - 230

Permalink: https://www.hzdr.de/publications/Publ-437
Publ.-Id: 437


Übersicht zu Arbeiten des Institutes für Sicherheitsforschung des FZR

Weiß, F.-P.

  • Lecture (Conference)
    Seminarvortrag, Institut für Reaktorsicherheit im FZK, Karlsruhe, 23. Februar 1995

Permalink: https://www.hzdr.de/publications/Publ-436
Publ.-Id: 436


Analysis of hard two-photon correlations measured in heavy-ion reactions at intermediate energies

Barz, H.-W.; Kämpfer, B.; Wolf, S.; Bauer, W.

Analysis of hard two-photon correlations
measured in heavy-ion reactions at intermediate energies

H.W.Barz1,2, B.Kämpfer1,2, GY. Wolf3,4, W. Bauer5

1Institut für Kern- und Hadronenphysik, FZ Rossendorf,
PF 510119, 01314 Dresden, Germany
1Institut für Theoretische Physik, TU Dresden,
Momrnsenstr. 13, 01062 Dresden, Germany
3GSI Darmstadt, PF 110552, 64220 Darmstadt, Germany
4KFKI RMKI Budapest, POB. 49, H-1525 Budapest, Hungary
MSU Michigan, East Lansing, MI 48824, USA

Abstract

Recently reported measurements of hard photon correlations in the reactions 36Ar On 27Al at 95 A*MeV, 86Kr on natNi at 60 A*MeV, and 181Ta on 197Au at 39.5 A*MeV are analyzed. A Boltzmann-Ühling-Uhlenbeck transport model is used to describe the photon production by individual nucleon-nucleon collisions. In the lighter systems we find the best agreement with data when taking into account only the photons from first chance collisions of nucleons or photons produced during the Passage of the nuclei, while the model predicts also a considerable late-time emission of photons which leads to a depletion of the calculated correlation function. The accuracy of the present data daas not allow firm conclusions on the reliability of this late time evolution. Our inveatigatiions do not support a recently reported interference pattern in the heavy Ta + Au system.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-434
Publ.-Id: 434


Spectroscopy of correlated fragments from the fission of hot nuclei performed at the FOBOS 4pi - array

Ortlepp, H.-G.; Wagner, W.; Dietterle, S.; Dshemuchadse, S.; Doronin, V. N.; Ivanovsky, S. I.; Kamanin, D. V.; Aleksandrov, A. A.; Aleksandrova, I. A.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-102 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-433
Publ.-Id: 433


Optimierung einer Bragg-Ionisationskammer

Gebhardt, M.

  • Other report
    Diplomarbeit

Permalink: https://www.hzdr.de/publications/Publ-431
Publ.-Id: 431


The effect of conditioned medium of porcine astrocytes and different cell lines on the activity of the marker enzymes ALP and Gamma-GT in endothelial cells of the porcine brain microvessels

Ahlemeyer, B.; Matys, S.; Brust, P.

  • Contribution to proceedings
    Cerebrovask. Konferenz, Paris 1995
  • Book (Authorship)
    Biology and Physiology of the Blood-Brain Barrier, ed. by Couraud and Scherman, Plenum Press, New York, 1996, pp. 229-233

Permalink: https://www.hzdr.de/publications/Publ-430
Publ.-Id: 430


Blood-Brain Barrier properties in vitro as related to the neurotransmitter serotonin

Brust, P.; Matys, S.; Wober, J.; Friedrich, A.; Bergmann, R.; Ahlemeyer, B.

  • Contribution to proceedings
    Cerebrovask. Konferenz, Paris 1995
  • Book (Authorship)
    Biology and Physiology of the Blood-Brain Barrier, edit. by Couraud, Pierre-Olivier and Scherman, Plenum Press, New York, 1996

Permalink: https://www.hzdr.de/publications/Publ-429
Publ.-Id: 429


The influence of ion energy on the wear behaviour of titanium-implanted silicon nitride ceramics

Brenscheidt, F.; Fischer, W.; Matz, W.; Wieser, E.

Permalink: https://www.hzdr.de/publications/Publ-427
Publ.-Id: 427


Influence of high dose and high Energy Oxygen implantation on the mechanical surface properties of aluminium

Wieser, E.; Schöneich, J.; Richter, E.

Permalink: https://www.hzdr.de/publications/Publ-426
Publ.-Id: 426


Growth and Characterization of Boron Nitride Thin Films

Plass, M.; Fukarek, W.; Kolitsch, A.; Kreißig, U.

Permalink: https://www.hzdr.de/publications/Publ-425
Publ.-Id: 425


Post-ion-implantation into amorphous carbon films

Kolitsch, A.; Sümmchen, L.; Ullmann, I.; Falke, U.; Heger, P.

Permalink: https://www.hzdr.de/publications/Publ-424
Publ.-Id: 424


Neutron Diffraction Study of Phase Transitions in the Mixed Crystal Sr0.7Ba0.3Nb2O6 Between 20 and 300 K

Prokert, F.; Savenko, B. N.; Balagurov, A. M.

Permalink: https://www.hzdr.de/publications/Publ-422
Publ.-Id: 422


Ion Beam Synthesis by High Dose Tungsten Implantation into 6H-Silicon Carbide

Weishart, H.; Matz, W.; Skorupa, W.

  • Contribution to external collection
    IC SCRM 95 in Kyoto, Japan, 18.-21.9.1995
  • Book (Authorship)
    Institute of Physics Conference Series 142(1996)3, 541-544, Silicon Carbide and Related Materials 1995 Conf., Kyoto, Japan, c 1996 IOP Pub.

Permalink: https://www.hzdr.de/publications/Publ-421
Publ.-Id: 421


Study of the different stages of damage induced by 200 keV Ge+ ion implantation in 6H-SiC

Pacaud, Y.; Brauer, G.; Perez-Rodriguez, A.; Stoemenos, J.; Barklie, R.; Voelskow, M.; Skorupa, W.

  • Contribution to external collection
    IC SCRM 1995, Kyoto, Japan, IOP Publishing

Permalink: https://www.hzdr.de/publications/Publ-420
Publ.-Id: 420


Focused ion beam sputtering yield measurements for cobalt ions on silicon and related materials

Schneider, P.; Bischoff, L.; Teichert, J.; Hesse, E.

The sputtering yield of crystalline, amorphous, and poly-silicon, as well as SiO2 and SiC, was investigated for 35 keV Co+ focused ion beam irradiation using the volume loss method. The sputtered holes were analysed by SEM and surface profiling. For crystalline silicon targets, the sputtering yield was determined as a function of the incident angle of the ions and substrate temperature.

Permalink: https://www.hzdr.de/publications/Publ-419
Publ.-Id: 419


Comparative Study of SIMOX Structures Using Four Analytical Techniques

Fukarek, W.; Yankov, R. A.; Skorupa, W.

Permalink: https://www.hzdr.de/publications/Publ-418
Publ.-Id: 418


Investigation of crack growth processes of surface-breaking cracks by ultrasound - Comparison of simulation and experiments

Bergmann, U.; Bergner, F.; Langenberg, K. J.; Hofmann, C.

  • Poster
    1995 World Congress on Ultrasonics, Berlin, 3.-7. September 1995
  • Contribution to proceedings
    Proc. 1995 World Congress of Ultrasonics, Berlin 3. - 7. September 1995, Part 2, p. 601

Permalink: https://www.hzdr.de/publications/Publ-416
Publ.-Id: 416


Local properties of a Hg/N2 bubbly flow injected by a single orifice in a longitudinal magnetic field

Kljukin, A.; Kolesnikov, Y.; Lielausis, O.; Platacis, E.; Skopis, M.; Eckert, S.; Gerbeth, G.

  • Lecture (Conference)
    Int. Riga Conference on MHD, August 1995, Riga

Permalink: https://www.hzdr.de/publications/Publ-415
Publ.-Id: 415


Stabilisation of thin liquid metal jets by magnetic field

Bucenieks, I.; Lielausis, O.; Gerbeth, G.; Falk, F.

  • Lecture (Conference)
    Int. Riga Conference on MHD, August 1995, Riga

Permalink: https://www.hzdr.de/publications/Publ-414
Publ.-Id: 414


Measurements of longitudinal velocity fluctuations in liquid sodium at high interaction parameters in a channel with conducting walls

Eckert, S.; Gerbeth, G.; Langenbrunner, H.; Witke, W.

  • Lecture (Conference)
    Int. Riga Conference on MHD, August 1995, Riga

Permalink: https://www.hzdr.de/publications/Publ-413
Publ.-Id: 413


Testing of a new experimental technique to study MHD-Associated phenomena with free liquid metal surface

Bojarevics, A.; Gelfgat, Y. M.; Gerbeth, G.

  • Lecture (Conference)
    Int. Riga Conference on MHD, August 1995, Riga

Permalink: https://www.hzdr.de/publications/Publ-412
Publ.-Id: 412


Gradient freeze crystal growth with optimized convection induced by a rotating magnetic field

Buhrig, E.; Wunderwald, U.; Gerbeth, G.; Gelfgat, Y. M.; Gorbunov, L.

  • Lecture (Conference)
    Int. Riga Conference on MHD, August 1995, Riga

Permalink: https://www.hzdr.de/publications/Publ-411
Publ.-Id: 411


Two-phase flow behaviour during a medium size cold leg LOCA test on PMK-2 (IAEA - SPE-4)

Szabados, L.; Ézsöl, G.; Perneczky, L.; Krepper, E.; Prasser, H.-M.; Schäfer, F.

The experiment to the IAEA standard problem exercise No. 4 was carried out in April 1993 on the integral test facility PMK-2 in Budapest. It was a 3.2 mm break on the downcomer head. The high pressure injection cooling was assumed to be not available. As an accident management measure bleed and feed on the secondary side of the steam generator was applied. Research Center Rossendorf contributed to the experiment of SPE-4 by supplying needle shaped conductivity probes for the measurement of local void fractions in the primary circuit of the PMK-II test facility. In the course of the standard problem exercise No. 4 RCR contributed with posttest calculations using the thermalhydraulic code ATHLET.
The report comprises a description of the initial and boundary conditions of the test and a phenomenological description of the thermalhydraulic events during the transient. The void fraction probe signals yields valuable information for deeper understanding of the thermalhydraulic occurrences and for code validation. This was the case particularly for correction of the level measurement.
A description of the thermalhydraulic occurrences from the viewpoint of code verification is given and the results of RELAP5 (KFKI-AEKI) and of ATHLET-calculations (RCR) are compared. Referring to this description, the sensitivity of the result to main influences is investigated using the ATHLET-code.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-101 August 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-410
Publ.-Id: 410


In situ observation of the tip shape of Co-Ge liquid alloy ion sources in a high-voltage transmission electron microscope

Driesel, W.; Dietzsch, C.; Hesse, E.; Bischoff, L.; Teichert, J.

For in situ observation in a 1 MeV TEM Co-Ge liquid alloy ion soures (LAISs) were mountet to a special specimen holder revealing the formation of the field-stabilizes Co-Ge liquid alloy cone, the change in the tip shape as a function of the ion emission current, spatial shifts of the liquid alloy cone, and microdroplet emission from Co-Ge LAISs. This has facilitated the better understanding of the ion and microdroplet emission process from Co-Ge LAISs in a large range of ion current. Below the onset voltage the shape of the tip covered with the liquid Co-Ge alloy is spherical. At the onset voltage the Tayler cone is formed. A jetlike protrusion at the cone vertex. The cone half-angle a decreases and the jet length l increases with increasing emission current le. Linear dependences of a and l on Ie are found. Emission of microdroplets is observed at the shanks behind the Tayler cone. The radius of microdroplets varied between 0.035 and 10 µm. These microdroplets are emitted in time intervals of about 0.1 s and more.

Permalink: https://www.hzdr.de/publications/Publ-409
Publ.-Id: 409


Cobalt disilicide interconnects for micromechanical devices

Teichert, J.; Bischoff, L.; Hesse, E.; Schneider, P.; Panknin, D.; Geßner, T.; Löbner, B.; Zichner, N.

A focused ion beam system working with 35 keV Co+ ions has been used to produce CoSi2 interconnects by means of ion beam synthesis. The capability of maskness patterning of the focused ion beam, ist large depth of focus and the possibility of a dynamic focus control allow the fabrication of interconnects in three-dimensional devices with this method. Investigations have been performed using polycrystalline, amorphous and single crystalline silicon substrates. The influence of implantation does has been studied, the electrical resistance and thermal stability of the interconnects has been measured. For room temperature implantation and annealing at 600°C for 1h resistivities between 34 and 60 µ( cm have been obtained for the various substrate materials. CoSi2 interconnects have been found to be thermally stable up to 700°C. In order to demonstrate this method interconnection lines have been fabricated on the sloped walls of deep anisotropically etched grooves 280 µm.

Permalink: https://www.hzdr.de/publications/Publ-408
Publ.-Id: 408


X-ray diffraction study of phase transitions in Sr0.39 Ba0.61 Nb2O6 between 20 and 500K

Prokert, F.; Ihringer, J.; Ritter, H.

Permalink: https://www.hzdr.de/publications/Publ-407
Publ.-Id: 407


The investigation of different cameras for in-beam PET imaging.

Pawelke, J.; Byars, L.; Enghardt, W.; Fromm, W.-D.; Geissel, H.; Hasch, B.-G.; Lauckner, K.; Manfraß, P.; Schardt, D.; Sobiella, M.

In situ and in vivo treatment plan verification and beam monitoring as well as dose control during heavy-ion tumour therapy can be performed in principle by measurements of range distributions of positron-emitting nuclei by means of PET techniques. For this purpose the performance of different types of positron camera as well as the results of in-beam PET experiments using beams of positron-active ions (15O, 17F and 19Ne with energies of 300-500 AMeV) are presented. Following the deduced performance requirements a PET scanner that is designed for clinical use in experimental heavy-ion therapy at GSI Darmstadt has been built. This limited angle tomograph consists of two large-area detector heads based on position sensitive BGO detectors and is predicted to perform the measurement of the end point of a positron-emitting ion beam for the verification of a treatment plan with a precision better than 1 mm. The maximum dose applied in the patient thereby is of the magnitude of 10 mGy.

Permalink: https://www.hzdr.de/publications/Publ-406
Publ.-Id: 406


Effects of nuclear Coulomb field on two-meson correlations

Barz, H.-W.

Abstract:

The infiuence of the nuclear Coulombfield on two-pion and two-kaon correlations is investigated for sources with charge number of Z = 160. The source radii
extracted from the correlation function determined in sidewards and outwards direction are remarkably affected for meson pairs with average momenta, below 200 MeV/c.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-405
Publ.-Id: 405


Influence of the first-order polarization on the stopping power for bare charges in the jellium model

Mathar, R. J.

Adding the contribution of the next higher order of the density parameter to the random-phase approximation (the zeroth-order, noninteracting approximation to the subceptibility) improves the calculation of the linear dielectric function of the jellium model. In this paper, the corresponding results by Holas, Aravind, and Singwi (Phys. Rev. B20 (1979) 4912) are picked up to extend the Lindhard-Winter theory of the electronic energy loss in a straightforward manner. As known from static approximations to the local-field correction, the electronic stopping at low ion velocities is enhanced. Above the stopping-power maximum, the first-order dynamic dielectric function delivers a correction of the opposite sign.

Permalink: https://www.hzdr.de/publications/Publ-403
Publ.-Id: 403


Forschungszentrum Rossendorf; Jahresbericht 1993/94

Fülle, R.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-100
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-402
Publ.-Id: 402


Spontaneous fission of 244Cm studied by the two-velocities method at the FOBOS spectrometer

Kozulin, E. M.; Oganessian, Y. T.; u. a.; Aleksandrov, A. A.; Aleksandrova, I. A.; u. a.; Gippner, P.; Matthies, A.; Herbach, C.-M.; Schilling, K.-D.; u. a.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-99
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-400
Publ.-Id: 400


Methodische Untersuchungen zum Einsatz der Positronen-Emissions-Tomographie in der Leichtionen-Tumortherapie.

Pawelke, J.

kein Abstrakt

  • Open Access Logo Dissertation, Technische Universität Dresden, Fakultät für Mathematik und Naturwissenschaften
    Forschungszentrum Rossendorf, FZR-97 (Juni 1995)
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-399
Publ.-Id: 399


Evidence for a supershort fission mode in the reactions 242mAm(nth,f) and 244Cm(sf)

Pyatkov, Y. V.; Aleksandrov, A. A.; Andreev, B. I.; Gippner, P.; Herbach, C.-M.; Ortlepp, H.-G.; Penionzhkevich, Y. E.; Shekhmamet'Ev, R. A.; Wagner, W.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-98 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-398
Publ.-Id: 398


Erfolgsbilanz läßt Qualitätsansprüche steigen

Maletti, R.

no abstract

  • Sonnenenergie & Wärmetechnik 1997, H.5, S.16

Permalink: https://www.hzdr.de/publications/Publ-397
Publ.-Id: 397


Abhängigkeit der mechanischen Eigenschaften, des Bestrahlungs- und des Ausheilverhaltens von der Tiefenlage in Schmiedestücken des WWER-Reaktordruckbehälterstahles 15Ch2MFA

Böhmert, J.; Große, M.; Viehrig, H.-W.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-93 April 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-396
Publ.-Id: 396


Institute of Radiochemistry; Annual Report 1994

Nitsche, H.; Engelmann, H.-J.; Bernhard, G.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-94
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-394
Publ.-Id: 394


In-Beam Investigation and the Structur of States in 113Sn

Käubler, L.; Döring, J.; Funke, L.; Kleinwächter, P.; Prade, H.; Reif, J.; Schwengner, R.; Winter, G.; u. a.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-95 Preprint
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-392
Publ.-Id: 392


Mixed-Ligand Oxorhenium(V) comlexes with Rhenium-Selenium bonds. Molecular structure of (3-Oxapentane-1.5-Dithiolato)-(Benzeneselenolato)Oxorhenium(V)

Fietz, T.; Spies, H.; Leibnitz, P.; Scheller, D.

Permalink: https://www.hzdr.de/publications/Publ-391
Publ.-Id: 391


Bericht der Frühjahrstagung der Studiengruppe für Elektronische Instrumentierung vom 3. bis 5. April 1995 in Jülich

Gabriel, F.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-96
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-390
Publ.-Id: 390


Bestimmung bruchmechanischer Kennwerte an Reaktordruckbehälterstählen mit der Einproben-Compliance-Methode und Korrelationen zur Kerbschlagarbeit

Bergmann, U.; Böhmert, J.; Viehrig, H.-W.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-81 März 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-389
Publ.-Id: 389


Studies to the Synthesis of 16 alpha-[18F] Fluoroestradiol

Römer, J.; Steinbach, J.; Kasch, H.

Permalink: https://www.hzdr.de/publications/Publ-388
Publ.-Id: 388


Carbon-mediated effects in Si and Si-related materials

Skorupa, W.; Yankov, R. A.

Permalink: https://www.hzdr.de/publications/Publ-387
Publ.-Id: 387


Conversion Electron Mössbauer Spectroscopy Studies of FeSi and FeSi2

Dobler, M.; Reuther, H.; Barradas, N.

  • Hyperfine Interactions 1 (1996) pp. 266-269

Permalink: https://www.hzdr.de/publications/Publ-386
Publ.-Id: 386


Evidence for diffusion-limited kinetics of ion-beam-induced epitaxial crystallization in silicon

Heera, V.; Henkel, T.; Kögler, R.; Skorupa, W.

Permalink: https://www.hzdr.de/publications/Publ-385
Publ.-Id: 385


Solar heat feeding into a district heating network

Rindelhardt, U.

After one year of operation the main results of the pilot system are summerized:

  • mean collector efficiency 30%
  • produced solar heat 30 MWh
  • system losses 15%
The reasons for the deviations of the measured values from the projected values are discussed.
  • Lecture (Conference)
    2. Deutsch-Italienische Konferenz über die Nutzung erneuerbare Energien, Brescia, Italien, 13.-16.6.1995, Tagungsband S. 241
  • Contribution to proceedings
    2. Deutsch-Italienische Konferenz über die Nutzung erneuerbare Energien, Brescia, Italien, 13.-16.6.1995, Tagungsband S. 241

Permalink: https://www.hzdr.de/publications/Publ-384
Publ.-Id: 384


Proximity gettering of transition metals in separation by implanted oxygen structures

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

Permalink: https://www.hzdr.de/publications/Publ-383
Publ.-Id: 383


Investigation of ion beam synthesized iron silicide layers by conversion electron Mössbauer spectroscopy

Dobler, M.; Reuther, H.; Betzl, M.; Mäder, M.

  • Lecture (Conference)
    Conf. Proc. Vol. 50, "CAME" 95, Ed. I. Ortalli, SIF, Bologna 1996, 687-690
  • Contribution to proceedings
    ICAME '95, Conference Proceedings Vol. 50, Ed.: I. Ortalli, SIF Bologna, 1996, pp. 687-690

Permalink: https://www.hzdr.de/publications/Publ-382
Publ.-Id: 382


The impact of kaon polarization in nuclear matter on the K- production in heavy-ion collisions

Kolomeitsev, E. E.; Voskresensky, D. N.; Kämpfer, B.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-381
Publ.-Id: 381


Rho Meson Self-Energy and Dielectron Emissivity in an Isospin-Asymmetric Pion Medium

Gulamov, T. I.; Titov, A. I.; Kämpfer, B.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-380
Publ.-Id: 380


Dilepton production in a chemically equilibrating, expanding and hadronizing quark-gluon plasma

Kämpfer, B.; Pavlenko, O. P.; Peshier, A.; Soff, G.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-378
Publ.-Id: 378


Technetium(V) and Rhenium(V) Complexes for 5-HT2A Serotonin Receptor Binding: Structure-Affinity Considerations

Johannsen, B.; Scheunemann, M.; Spies, H.; Brust, P.; Wober, J.; Syhre, R.; Pietzsch, H.-J.

Permalink: https://www.hzdr.de/publications/Publ-377
Publ.-Id: 377


Massive quasiparticle model of the SU(3) gluon plasma

Peshier, A.; Kämpfer, B.; Pavlenko, O. P.; Soff, G.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-376
Publ.-Id: 376


Plasma Immersion Ion Implantation as a simple Method of Ion Implantation into Metals

Brutscher, J.; Günzel, R.

  • Lecture (Conference)
    AMPT '95

Permalink: https://www.hzdr.de/publications/Publ-375
Publ.-Id: 375


Sheath Dynamics in Plasma Immersion Ion Implantation

Brutscher, J.; Günzel, R.; Möller, W.

Permalink: https://www.hzdr.de/publications/Publ-373
Publ.-Id: 373


CEMS Studies on Iron Silicides

Reuther, H.; Lange, H.; Dobler, M.; Schumann, J.

  • Lecture (Conference)
    Conf. Proc. Vol. 50, "CAME" 95, Ed. I. Ortalli, SIF, Bologna 1996, 573-576
  • Contribution to proceedings
    ICAME '95, Conference Proceedings Vol. 50, Ed.: I. Ortalli, SIF Bologna, 1996, pp.573-576
  • Contribution to external collection
    Conf. Proc. Vol. 50, "CAME" 1995, Ed. I. Ortalli, SIF, Bologna 1996, 573-576

Permalink: https://www.hzdr.de/publications/Publ-371
Publ.-Id: 371


Ion Drift Behaviour in Borosilicate Glasses during Anodic Bonding to Silicon or Metals

Lange, K.; Grigull, S.; Kreißig, U.; Schmidt, B.; Harz, M.

  • Contribution to proceedings
    Proceedings of the 3rd International Symposium on Semiconductor Water Bonding, Proceedings-Volume 97-7 (The Electrochemical Society Inc., Pennington, New Jersey, 1995)

Permalink: https://www.hzdr.de/publications/Publ-370
Publ.-Id: 370


Experimentelle Modalanalyse an einer Kühlschleife eines Druckwasserreaktors

Altstadt, E.; Richter, K.; Weiß, R.; Zimmermann, W.

  • Other report
    TUD - Sonderdruck zum Vortrag in Schmochtitz

Permalink: https://www.hzdr.de/publications/Publ-367
Publ.-Id: 367


Submicron CoSi2-structures fabricated by focused ion beam implantation and local flash lamp melting

Bischoff, L.; Heinig, K.-H.; Teichert, J.; Skorupa, W.

A new way to fabricate submicron CoSi2 structures on Si wafers is presented. The method consists of a combination of focused ion beam (FIB) implantation of Co+ ions and subsequent flash lamp irradiation. With our FIB equipment IMSA-100 one- and two dimensional structures were implanted by writing with a 35 keV Co+ beam which was focused to a spot diameter of 200nm. However, for the porposed method the spot size is not the crucial dimension because the final structure size is controlled by a local melting and recrystallization process in the implanted regions. Here the structure size is determined by the amount of implanted atoms which can be concentrated by the local melting process into the submicron CoSi2 structures. The local melting is caused by heteronucleation at the Si wafer surface during the short period of superheating, which is obtained by intense flash lamp irradiation of 3 or 20 ms duration. Disintegration of implanted CoSi2 wires by precipitate formation during thermal annealing, which was reported by Liddle et al. (Mater. Res. Soc. Symp. Proc. 279 (1993) 881), can be avoided by this method. The CoSi2 structures were analysed by scanning electron microscopy (SEM) and energy dispersiv X-ray analysis (EDX). Dots and wires of about 200 nm diameter and width, respectively, have been fabricated during these first experiments, whilst smaller dimensions seem to be possible in future.

Permalink: https://www.hzdr.de/publications/Publ-366
Publ.-Id: 366


Rhenium(V) gluconate, a suitable precursor for the preparation of rhenium(V) complexes

Noll, B.; Knieß, T.; Friebe, M.; Spies, H.; Johannsen, B.

Permalink: https://www.hzdr.de/publications/Publ-365
Publ.-Id: 365


Basic Hydrolysis of 2-(18F)Fluoro-1,3,4,6-tetra-0-acetyl-D-glucose in the Preparation of 2-(18F)Fluoro-2-deoxy-D-glucose

Füchtner, F.; Steinbach, J.; Mäding, P.; Johannsen, B.

Permalink: https://www.hzdr.de/publications/Publ-364
Publ.-Id: 364


Synthesis and characterization of uranyl-orthosilicate (UO2)2SiO4 2H2O

Moll, H.; Matz, W.; Schuster, G.; Brendler, E.; Bernhard, G.; Nitsche, H.

Permalink: https://www.hzdr.de/publications/Publ-361
Publ.-Id: 361


Capillary electrophoresis for a "finger-print"-characterization of fulvic and humic acids

Pompe, S.; Heise, K.-H.; Nitsche, H.

Permalink: https://www.hzdr.de/publications/Publ-360
Publ.-Id: 360


Improvement of hardness, wear and corrosion behaviour of magnesium by ion implantation

Chudoba, T.; Richter, E.; Schneider, M.

  • Contribution to external collection
    9th Int. Conf. on IBMM, Canberra, Australia, 5-10 Feb. '95, Ion Beam Modi. of Mat., Eds: J.S. Williams, R.G. Elliman, M.C. Ridgway, c '96 pp.1008-1011

Permalink: https://www.hzdr.de/publications/Publ-359
Publ.-Id: 359


Design Considerations for Plasma Immersion Ion Implantation Systems

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

Permalink: https://www.hzdr.de/publications/Publ-358
Publ.-Id: 358


Inherent Possibilities and Restrictions of Plasma Immersion Ion Implantation Systems

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

Permalink: https://www.hzdr.de/publications/Publ-357
Publ.-Id: 357


Betriebserfahrungen mit einer 100-m2-Solaranlage zur Trinkwasserbereitung und Fernwärmeeinspeisung

Brünig, D.; Rindelhardt, U.

Die Ergebnisse des ersten zehn Betriebsmonate der Solaranlage Freital werden vorgestellt. Bei einem Kollektornutzungsgrad von 29% wurde ein Ertrag von 264 kWh/m² erreicht. Für das erste volle Betriebsjahr wird ein Wert von 327 kWh/m² erwartet. Mehr als 2/3 der erzeugten Solarwärme wurde in das Fernwärmenetz eingespeist, der Rest diente der Warmwasserbereitung einer Schule.

  • Lecture (Conference)
    5. Symposium Thermische Solarenergie, Staffelstein, 21.-26. Juni 1995, Tagungsband S.133
  • Contribution to proceedings
    5. Symposium Thermische Solarenergie, Staffelstein, 21.-26. Juni 1995, Tagungsband S.133

Permalink: https://www.hzdr.de/publications/Publ-356
Publ.-Id: 356


Ermittlung der Neutronendosis von bestrahlten WWER-Reaktordruckbehältermaterialien

Barz, H.-U.; Böhmer, B.; Konheiser, J.; Stephan, I.

In this report is described the theoretical and experimental determination of all needed parameters for the neutron exposure of the different specimens that were irradiated in the Rheinsberg reactor within the period from 1984 until 1988 to obtain data for neutron embrittlement studies.
The methodical approach is represented, possible sources of errors are discussed and all the needed results are collected. The work can be divided into a pure calculation part, into the description of the extraction of the monitors and their gamma spectrometric analysis and into the discussion of the spectrum adjustment procedure which combines experimental and theoretical results. Therefore, this representation deals not only with this special task but gives also a survey about the methodical approach and the state of art in Rossendorf for the general problem of determination of neutron fluences, because the developed methods are generally applicable and not limited to the special problem of neutron embrittlement. Different problems with respect of neutron fluences exist also in Germany.
The calculation of fluences is based on an accurate description of the history of the reactor for all irradiation periods, i.e. the time and space dependence of burnup, power and fisson sources. This information was given for a time and space grid of all fuel elements.
For the calculation of the fluences were not used time dependent fluxes, but at first integral sources of fission neutrons are calculated for different fissionable isotopes. Using these given integral source distributions the fluences were calculated and the results from the different fissionable source were composed. For the improvement of the comparison between experimental and theoretical results a special method was used calculating special integral sources for the given detector, because each detector according to its decay notes another integral source resp. flux distribution, which has to be theoretically corrected.
The basis of all transport calculations was the Monte Carlo method in a special problem adjusted kind. Special procedures were developed and successfully applicated for the reduction of statistical errors. Therefore, also for single specimens results with small statistical errors were obtained. It is remarkable that this accurate method which allows a realistic 3-dimensional description of the system reactor-surroundings could be applied with reasonable calculation times for the great number of needed calculations.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-87 Juni 1995
    ISSN: 1436-3976

Downloads

Permalink: https://www.hzdr.de/publications/Publ-355
Publ.-Id: 355


Recombination of nonequilibrium charge carriers in heavy ion tracks in silicon

Eremin, V.; Ilyashenko, I. N.; Strokan, N.; Schmidt, B.

Permalink: https://www.hzdr.de/publications/Publ-354
Publ.-Id: 354


The application of high energy ion implantation for silicon radiation detectors

von Borany, J.; Schmidt, B.; Grötzschel, R.

  • Nuclear Instruments and Methods in Physics Research A 377 (1996) pp. 514-520
    DOI: 10.1016/0168-9002(96)00235-5
    Cited 26 times in Scopus
  • Lecture (Conference)
    oral presentation during, 7th European Symposium on Semiconductor Detectors, Schloß Elmau, 7.-10.5.1995

Permalink: https://www.hzdr.de/publications/Publ-353
Publ.-Id: 353


Pages: [1.] [2.] [3.] [4.] [5.] [6.] [7.] [8.] [9.] [10.] [11.] [12.] [13.] [14.] [15.] [16.] [17.] [18.] [19.] [20.] [21.] [22.] [23.] [24.] [25.] [26.] [27.] [28.] [29.] [30.] [31.] [32.] [33.] [34.] [35.] [36.] [37.] [38.] [39.] [40.] [41.] [42.] [43.] [44.] [45.] [46.] [47.] [48.] [49.] [50.] [51.] [52.] [53.] [54.] [55.] [56.] [57.] [58.] [59.] [60.] [61.] [62.] [63.] [64.] [65.] [66.] [67.] [68.] [69.] [70.] [71.] [72.] [73.] [74.] [75.] [76.] [77.] [78.] [79.] [80.] [81.] [82.] [83.] [84.] [85.] [86.] [87.] [88.] [89.] [90.] [91.] [92.] [93.] [94.] [95.] [96.] [97.] [98.] [99.] [100.] [101.] [102.] [103.] [104.] [105.] [106.] [107.] [108.] [109.] [110.] [111.] [112.] [113.] [114.] [115.] [116.] [117.] [118.] [119.] [120.] [121.] [122.] [123.] [124.] [125.] [126.] [127.] [128.] [129.] [130.] [131.] [132.] [133.] [134.] [135.] [136.] [137.] [138.] [139.] [140.] [141.] [142.] [143.] [144.] [145.] [146.] [147.] [148.] [149.] [150.] [151.] [152.] [153.] [154.] [155.] [156.] [157.] [158.] [159.] [160.] [161.] [162.] [163.] [164.] [165.] [166.] [167.] [168.] [169.] [170.] [171.] [172.] [173.] [174.] [175.] [176.] [177.] [178.] [179.] [180.] [181.] [182.] [183.] [184.] [185.] [186.] [187.] [188.] [189.] [190.] [191.] [192.] [193.] [194.] [195.] [196.] [197.] [198.] [199.] [200.] [201.] [202.] [203.] [204.] [205.] [206.] [207.] [208.] [209.] [210.] [211.] [212.] [213.] [214.] [215.] [216.] [217.] [218.] [219.] [220.] [221.] [222.] [223.] [224.] [225.] [226.] [227.] [228.] [229.] [230.] [231.] [232.] [233.] [234.] [235.] [236.] [237.] [238.] [239.] [240.] [241.] [242.] [243.] [244.] [245.] [246.] [247.] [248.] [249.] [250.] [251.] [252.] [253.] [254.] [255.] [256.] [257.] [258.] [259.] [260.] [261.] [262.] [263.] [264.] [265.] [266.] [267.] [268.] [269.] [270.] [271.] [272.] [273.] [274.] [275.] [276.] [277.] [278.] [279.] [280.] [281.] [282.] [283.] [284.] [285.] [286.] [287.] [288.] [289.] [290.] [291.] [292.] [293.] [294.] [295.] [296.] [297.] [298.] [299.] [300.] [301.] [302.] [303.] [304.] [305.] [306.] [307.] [308.] [309.] [310.] [311.] [312.] [313.] [314.] [315.] [316.] [317.] [318.] [319.] [320.] [321.] [322.] [323.] [324.] [325.] [326.] [327.] [328.] [329.] [330.] [331.] [332.] [333.] [334.] [335.] [336.] [337.] [338.] [339.] [340.]