Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

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41477 Publications

Compartmental analysis of blood brain transfer and protein incorporation of L-[75Se]seleno methionine in rat brain

Bergmann, R.; Brust, P.; Coenen, H. H.; Stöcklin, G.

  • Journal of Neurochemistry 63 (1994) (Suppl. 1) S78C


Differentiating between Monodentate and Bidentate Carboxylate Ligands Coordinated to Uranyl Ions using EXAFS

Denecke, M. A.; Reich, T.; Pompe, S.; Bubner, M.; Heise, K.-H.; Nitsche, H.; Allen, P. G.; Bucher, J. J.; Edelstein, N. M.; Shuh, D. K.

  • Contribution to external collection
    J. Phys. IV France 7, C2-637 (1997)


Shears bands in 193Pb

Baldsiefen, G.; u. a.; Stoyer, M. A.; u. a.; Cederwall, B.; u. a.; Vo, D. T.; Frauendorf, S.

  • Physical Review C 54 (1996) 3 pp. 1106-1116


Investigation of Fe-Mg alloys produced by ion implantation

Reuther, H.; Betzl, K.; Richter, E.

Iron and magnesium are insoluble elements with each other
and there is no phase diagram. However, it is possible to produce artificial
alloys by ion implantation, in this study by iron implantation into magnesium.
Samples are investigated by conversion electron Mössbauer spectroscopy,
Auger electron spectroscopy and x-ray diffraction. While at low doses gaussian
shaped iron profiles and paramagnetic doublets as Mössbauer spectra
are obtained, the iron concentration reaches at the highest dose 90 at.-%
in maximum and the Mössbauer spectrum shows a dominant ferromagnetic
fraction. The x-ray diffraction pattern let conclude that a dilated a-iron
lattice is formed. Microhardness of all samples is clearly increased due
to the implantation.

  • Hyperfine Interactions 112(1998) 165-168


Microdisperse iron silicide structures produced by implantation of iron ions in silicon

Dobler, M.; Reuther, H.; Möller, W.

Iron implanted and subsequently annealed n-type Si(111) was
studied by conversion electron Mössbauer spectroscopy for phase analysis
and Auger electron spectroscopy for sputter depth profiling and element mapping.
During implantation (200 keV, 3 x 1017 cm-2, 350 °C) a mixture of ß-
and a-FeSi2 and after the subsequent annealing (900 °C for 18 h and
1150 °C for 1 h) a complete transition to the ß- and a-phase can
be detected. The as-implanted profile has Gaussian shape which becomes broad
during annealing at 900 °C to a plateau-like profile and shows only
a slight broadening and depth depending fluctuations of the iron concentration
after the 1150 °C annealing. With scanning Auger electron spectroscopy
the lateral iron and silicon distribution were investigated show for the
sample annealed at 900 °C large separated ß-FeSi2 precipitates
which grow due to the process of Ostwald ripening. At 1150 °C additionally
coalescence of the precipitates occur and a wide extended penetration a-FeSi2
network structure is formed.

  • Hyperfine Interactions 112 (1998) 185-188
  • Lecture (Conference)
    ISI AME '96, Südafrika


Intruder bands in 114Te: Smooth band termination

Thorslund, I.; Fossan, D. B.; Lafosse, D. R.; Schnare, H.; Hauschild, K.; Hibbert, I. M.; Mullins, S. M.; Paul, E. S.; Ragnarsson, I.; Sears, J. M.; Vaska, P.; Wadsworth, R.

  • Physical Review C 52 (1995) 6 pp. R2839-R2843


Band structure of the odd-even 125La, 127La nuclei

Starosta, K.; u. a.; Fossan, D. B.; Lafosse, D. R.; Schnare, H.; u. a.; Satula, W.; Rohozinski, S. G.; Wyss, R.; Hibbert, I. M.; u. a.; Beausang, C. W.; u. a.

  • Physical Review C 53 (1996) 1 pp. 137-150


Smooth band termination in 108Sn

Wadsworth, R.; Hauschild, K.; Beausang, C. W.; Cromaz, M.; Schnare, H.; Fossan, D. B.; Flibotte, S.; Galindo-Uribarri, A.; Ragnarsson, I.


Triaxial bands in 133Ce

Hauschild, K.; Wadsworth, R.; u. a.; Fallon, P.; Macchiavelli, A. O.; Fossan, D. B.; Schnare, H.; u. a.; Nolan, P. J.

  • Physical Review C 54(1996) 2 pp. 613-619


Solubility and Speciation of (UO2)2SiO4 2H2O in Aqueous Systems

Moll, H.; Geipel, G.; Matz, W.; Bernhard, G.; Nitsche, H.

  • Radiochimica Acta 74 (1996) pp. 3-7
  • Poster
    Migration '95


A Comparison of Natural Humic Acids with Synthetic Humic Acid Model Substances: Characterization and Interaction with Uranium (VI)

Pompe, S.; Bubner, M.; Denecke, M. A.; Reich, T.; Brachmann, A.; Geipel, G.; Nicolai, R.; Heise, K.-H.; Nitsche, H.

  • Radiochimica Acta 74 (1996) pp. 135-140


Identification of Light Charged Particles and Heavy Ions in Silicon Detectors by Means of Pulse-Shape Discrimination

Pausch, G.; Ortlepp, H.-G.; Bohne, W.; Grawe, H.; Hilscher, D.; Moszynski, M.; Wolski, D.; Schubart, R.; de Angelis, G.; de Poli, M.

  • IEEE Transactions on Nuclear Science 43 (1996) 3 pp. 1097-1101


K+ -meson production in pBe interactions at Tp = 2.9 GeV

Büscher, M.; Eßer, R.; Franzen, A.; u. a.; Müller, H.; Prietzschtk, B.; Rimarzig, B.; u. a.; Akindinov, A.; Chumakov, M.; Demechin, V.; u. a.; Sibirtsev, A.; Kruglov, V.; Petrus, A.; Koptev, V.; Mikirtychyants, S.

The production of K+ and π+ mesons and protons in pBe collisions at T p =2.9 GeV has been studied at the ITEP proton synchrotron. Ejectiles with a momentum of p=545 MeV/c were observed under an emission angle theta=17°. The detectors which have been developed for the identification of kaons out of a six orders of magnitude more intense background of pions and protons are described. A cross-section ration d2σK+ /dωdp: d2σπ+ /dωdp: d2σ p + /dωdp of (1±0.34):(85±1):(31±1) has been measured. Normalization with existing pion data yields an invariant differential cross section E∙d3σK+ /d3 p=(3.1±1.2) mb GeV-2c3sr-1 and a total cross section of σtot(pBe) =(3.7±1.5) mb. These cross sections are compared with existing data and theoretical predictions. The A dependence of K+ production in the few-GeV range is analyzed.

  • Zeitschrift für Physik A 355 (1996) pp. 93-100


The gamma-decay of particle-hole states in 208Pb using the Euroball Cluster detector

Radermacher, E.; Wilhelm, M.; Albers, S.; Eberth, J.; Nicolay, N.; Thomas, H. G.; von Brentano, P.; Schwengner, R.; Skoda, S.; Winter, G.; Maier, K. H.

Neutron particle-hole states in the doubly magic nucleus 208Pb
were investigated using a Euroball Cluster detector and five usual HPGe
detectors at the Osiris cube spectrometer in Cologne. 126 gamma-ray transitions
with energies up to 7.2 MeV could be detected, 14 of those for the first
time. The states were excited with the 208Pb (p,p'gamma)208Pb
reaction via isobaric analogue resonances in 209Bi at Ep=16.5,
17, 17.45, 17.5 and 18.5 MeV and through the subcoulomb 207Pb(d,pgamma)208Pb
reaction at Ed=10 MeV. For most of the excited states assignments
for the particle and/or the hole component of the configuration could be
made, 22 of these are new.

  • Nuclear Physics A 597 (1996) pp. 408-426


Formation of ternary (Fe1-xCox)Si2 structures by ion beam assisted deposition and ion implantation

Wieser, E.; Panknin, D.; Barradas, N. P.; Betzl, M.; Reuther, H.; Henrion, W.; Lange, H.

  • Nuclear Instruments and Methods in Physics Research B 124 (1997) 533-541


Potential-Energy Surfaces of Sodium Clusters with Quadrupole, Hexadecapole, and Triaxial Deformations

Reimann, S. M.; Frauendorf, S.

  • Surface Review and Letters 3 (1996) 1 pp. 25-29


Shapes and Free Energies of Molten Sodium Clusters

Frauendorf, S.; Pashkevich, V. V.

  • Surface Review and Letters 3 (1996) 1 pp. 241-245


Magnetic Properties of Sodium Clusters

Frauendorf, S.; Pashkevich, V. V.; Reimann, S. M.

  • Surface Review and Letters 3 (1996) 1 pp. 441-445


Thermodynamics and Decay of Liquid Alkali Clusters

Frauendorf, S.; Pashkevich, V. V.

  • Contribution to external collection
    T. P. Martin: Large Clusters of Atoms and Molecules, Dordrecht, Netherlands: Kluwer Academic Publishers, 1996, 201-220


Charakterisierung der Submicron-Partikel in einem umweltrelevanten Wasser: Stauwasser in einer Kommunalmülldeponie über einem Schlammteich (Tailing) der Uranerzaufbereitung in Freital/Sachsen

Zänker, H.; Richter, W.; Hüttig, G.; Nitsche, H.; Wiesener, W.; Mende, A.

Characterization of Submicron Particles in an Environmentally-Relevant Water: Backwater From a Sanitary Landfill on a Uranium Mine Tailing at Freital, Saxony. A strategy for characterizing submicron particles in environmental waters based on filtration, centrifugation and photon correlation spectroscopy (PCS) is proposed. Filtration and centrifugation are not used here as methods for particle characterization but serve merely as techniques of a rough separation of the sample. They are applied as cautiously and non-invasively as possible and are only aimed at separating the sample sufficiently for measurements by primarily PCS. The separation should unmask small particles
that scatter little light and divide the sample into populations of particles that have monomodal or bimodal size distributions. In this way, the strategy optimizes subsequent particle-size determinations by PCS and minimizes the influence of sample preparation on the samples. A further essential feature of this strategy is the parallel application of complementary methods for both sample preparation and particle characterization (filtration/centrifugation, PCS/SEM, gravimetry/ICP-MS etc.). This facilitates the validation of results and increases the probability for recognizing artifacts. Based on our experimental experience, a guideline for PCS measurements on low-concentration colloids with the BI 90/Correlator BI 9000 AT system from Brookhaven Instruments Corp. was developed. This guideline is aimed at obtaining autocorrelation functions of sufficiently good photon counting statistics which is crucial in PCS on colloidal solutions poor in particles. A measuring campaign on an environmentally-relevant water (backwater from a sanitary landfill on a uranium mine tailing at Freital, Saxony) showed the presence of about 1 to 2 mg/l of submicron particles having a particle size of 30 to 300 nm and of about 5 mg/l of suspended matter (>1000 nm).

  • Open Access Logo Forschungszentrum Rossendorf; FZR-155
    ISSN: 1436-3976



Windpotentialmodellierung in komplexem Gelände

Heinemann, D.; Müller, R.; Waldl, H. P.; Hirsch, W.; Rindelhardt, U.

Das Windenergiepotential wird für komplexes Gelände im Binnenland mit zwie rechzeitökonomischen Modellen simuliert. Hierzu wird das in schwach gegliedertem Gelände Mitteleuropas erprobte und bewährte Programmpaket WAsP, sowie ein einfaches mesoskaliges Strömungsmodell (AIOLOS) verwendet. Die Ergebnisse der Simulation werden für ausgewählte Standorte verglichen und diskutiert. Die mit dem Modell WAsP berechnete Leistungsdichte, welche im Rahmen einer Windpotentialstudie für Zentralsachsen ermittelt wurde, wird dargestellt.

  • Lecture (Conference)
    DEWEK 96, Wilhelmshaven, 23.-25.10.96, Tagungsband S. 334
  • Contribution to proceedings
    DEWEK 96, Wilhelmshaven, 23.-25.10.1996, Tagungsband S. 334


Overpressurised bubbles versus voids in helium implanted and annealed silicon

Fichtner, P.; Kaschny, J.; Yankov, R. A.; Mücklich, A.; Kreißig, U.; Skorupa, W.

  • Applied Physics Letters 70 (1997) 732


Application of Highly Focused Ion Beams

Bischoff, L.; Teichert, J.

The impressive development of focused ion beam (FIB) systems
from the laboratory level to high performance industrial machines during
the last twenty years is briefly reported. The design and the functional
principle of a liquid metal ion source as well as a FIB column are described.
The main application fields of the FIB technology are discussed. More in
detail the Rossendorf FIB activities, like writing Co+ FIB implantation
in silicon to fabricate CoSi2 microstructures by ion beam synthesis and
the writing Ga+ FIB implantation to create a patterned etch stop during
a following anisotropic etching for micromechanical 3D structure fabrication
are presented.

  • Lecture (Conference)
    14th Int. Conf. Applic. of Accelerators in Research and Industry, Denton, 6.-9.11.96
  • Mat. Sci. Forum 248-249 (1997) 445
  • Contribution to external collection
    CP392, Application of Accelerators in Research and Industry, edited by J. L. Duggan and I. L. Morgan, AIP Press, New York 1997, 1175-1178


Cyclotrone 18/9 User Community, First Workshop, Rossendorf, October 10/11 1996

Johannsen, B.; Preusche, S.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-151
    ISSN: 1436-3976



Plasma immersion implantation using pulsed plasma with DC and pulsed high voltages

Brutscher, J.; Günzel, R.; Möller, W.

New experiments in plasma immersion ion implantation (PIII)
have been performed to explore the extended operation regimes available
with pulsed plasmas. A pulsed extraction voltage and a synchronized pulsed
plasma show a further reduction of thermal load, more stable operation
and improved implantation results. It was even possible to run PIII in
a mode with pulsed plasma and a DC voltage; in this way omitting the costly
high voltage modulating unit. Time resolved measurements of plasma density
and electron temperature have been made to get information about the plasma
buildup and decay process. In all cases a space charge sheath forms around
the sample where the ions are accelerated. The extension of the sheath
has been measured using time resolved Langmuir probe measurements. Iron
and aluminium samples were implanted with nitrogen using a DC plasma and
pulsed extraction voltage, pulsed plasma and pulsed extraction voltage,
and pulsed plasma and a DC extraction voltage. Analysis showed that in
all cases nitrogen could be implanted.

  • Lecture (Conference)
    3rd International Workshop on Plasma - Based Ion Implantation (PBII), Dresden, Germany, Sept. 16-18, 1996
  • Surf. Coati. Technol. 93 (1997) 197


Short pulse plasma immersion ion implantation of oxygen into silicon: determination of the energy distribution

Barradas, N.; Maas, A. S. H.; Mändl, S.; Günzel, R.

Plasma immersion ion implantation was used to implant
oxygen ions into silicon with applied voltage pulses of 40 kV and 2.5 ms
total lenght. Positive ions from the plasma O2+ and O+, with a continuous
energy distribution between 0 and 40 keV were implanted with nominal doses
between 2x1016 and 2x1017/cm2. The resulting oxygen depth profiles were
measured with elastic recoil detection using 13.4 MeV a particles. The
obtained depth profiles were simulated using a linear superposition of
single-energy profiles calculated with TRIM, in order to determine relevant
parameters of the accelerated ions. The energy distribution of the incident
ions is derived from the results obtained and compared with theoretical
models. The agreement found is very good. The plasma found to be composed
of 35(8)% O2+ and 65(8)% O+ ions. An Fe contamination in the plasma is
observed using Rutherford backscattering.

  • Surface & Coatings Technology 93 (1997) 238-241
  • Lecture (Conference)
    3rd International Workshop on Plasma - Based Ion Implantation (PBII), Dresden, Germany, Sept. 16-18, 1996


Workshop on Kaon Production

Grosse, E.; Kämpfer, B.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-150
    ISSN: 1436-3976



Ion Beam Assisted Deposition of a tungsten Compound Layer on 6H-Silicon Carbide

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

Ion beam assisted deposition (IBAD) as a means of synthesizing
a tungsten carbide layer on top of SiC is investigated by Rutherford Backscattering
(RBS), X-ray diffraction (XRD) and four point probe measurements. Evaporation
of tungsten and subsequent implantation of carbon leads to a crystalline
layer of tungsten carbide whose resistivity is 1554 mWcm. At an implantation
dose of 5x1017C+cm-2 enhanced surface erosion occurs. Simultaneous evaporation
of tungsten and implantation of carbon procedures a layer of crystalline
W2C mixed with tungsten. The resistivity of this layer is 400 mWcm, i.e.
only a factor of 5 higher than that of single crystal W2C.


Solare Warmwasserbereitung und Fernwärmeversorgung

Brünig, D.; Rindelhardt, U.

Die Ergebnisse der Solaranlage Waldblickschule Freital werden zusammenfassend dargestellt. Besonderes Augenmerk liegt auf der Einkopplung von solar erzeugter Wärme in ein Fernwärmenetz. Negativ wirken sich dabei sowohl hohe Netzverluste als auch hohe Rücklauftemperaturen aus. Die Untersuchungen ergaben, daß unter wirtschaftlichen Gesichtspunkten der solare Deckungsgrad in Fernwärmenetzen bei maximal 10% liegen sollte.

  • Sonnenenergie & Wärmetechnik, Heft 1/1997, S. 14


Measured and Calculated Dose Distribution for 3-D Plasma Immersion Ion Implantation

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

Nitrogen was implanted into four cylinders (height 37
mm and diameter 4, 6, 8, and 12 mm) covered with aluminium foil using plasma
immersion ion implantation at 30 kV. The homogeneity of the implantation,
i.e. the spatial variation of the implanted dose, was determined for selected
points on the top and the side walls of the cylinders with sputter depth
profiling using Auger electron spectroscopy. Calculations approximating
the dynamic sheath evolution with discrete sheath positions were performed
to obtain the variation of the implanted dose and angle of incidence. Good
agreement is found between the calculations and the experimental data.
The ion dose exhibits a maximum on the top and decreases on the side walls.
A second maximum is formed on the wall of the cylinder. The total dose
variation is of the order of 50 %.

  • Surface & Coatings Technology 93 (1997) 229-233
  • Lecture (Conference)
    3rd International Workshop on Plasma - Based Ion Implantation (PBII), Dresden, Germany, Sept. 16-18, 1996


Ion Energy Distribution in Plasma Immersion Ion Implantation

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

In plasma immersion ion implantation the ions are accelerated
from the plasma to the target. The total current, as delivered by the high
voltage pulse generator, is only a qualitative reading of the ion flux
density on the target. The main reason for this is a large secondary electron
coefficient, strongly depending on the ion energy and the surface composition.
In this work direct time-resolved ion flux measurements are presented.
High voltage pulses of eU0 = 5, 10, 15 and 20 kV were applied to a spherical
target with a small orifice. The ions were collected in the high vacuum
region behind this orifice and their energy distribution function exhibits
a sharp peak at the nominal energy eU0 with the height decreasing during
the voltage pulse, in agreement with the theoretical predictions for a
collisionless transit through the plasma sheath.

  • Surface & Coatings Technology 93 (1997) 234-237
  • Lecture (Conference)
    3rd International Workshop on Plasma - Based Ion Implantation (PBII), Dresden, Germany, Sept. 16-18, 1996


Theorie und Computersimulation der Ostwald-Reifung bei der Ionenstrahlsynthese

Reiß, S.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-145 (Dissertation, TU Dresden)
    ISSN: 1436-3976



Sizing and Testing of Stand Alone Photovoltaic Systems

Rindelhardt, U.; Futterschneider, H.; Garche, J.; Schulze, L.

Based on the analysis of a 43 years irradiation data serie (Dresden) sizing rules for stand alone PV systems are presented. Values of sizing irradiation and system autonomy are derived from the statistical analysis, taking into account realistic properties of the PV system components. These data seem to bee applicable to larger regions of Gemany and middle Europe. The sizing rules are compared with experimantal results and with results of simulations.

  • Lecture (Conference)
    Eurosun 96, Freiburg, 16.-19.9.1996
  • Contribution to external collection
    Proceedings of Eurosun 96, Freiburg, 16.-19.9.1996, Vol. 2, p. 848


Enzymatic Hydrolysis of Ester Groups of Mixed-Ligand Oxorhenium (V) and Oxotechnetium (V) Complexes

Seifert, S.; Syhre, R.; Spies, H.; Johannsen, B.

  • Applied Radiation and Isotopes Vol. 48, No. 8, pp. 1051-1057, 1997


Writing FIB Implantation an Subsequent Anisotropic Wet Chemical Etching for Fabrication of 3D Structures in Silicon

Schmidt, B.; Bischoff, L.; Teichert, J.

The further miniaturization of silicon micromechanical
structures in combination with the high developed microelectronic technology
at the mm- and sub-mm level will lead to a new generation of microdevices.
A modern technique to fabricate three dimensional micromechanical structures
is the combination of high concentration p+-doping by writing ion implantation
using a focused ion beam (FIB) and subsequent anisotropic and selective
wet chemical etching. FIB patterned and chemical etched 3D structures have
been fabricated using 35 keV Ga+-ion implantation and subsequent anisotropic
etching in KOH/H2O-solution. The Ga+-FIB patterned test structures were
characterized by scanning electron microscopy.

  • Lecture (Conference)
    EUROSENSORS X, 8.-11.9.1996
  • Sensors and Actuators A 61 (1997) 369-373


Computer Simulation and Boron Nitride

Albe, K.; Möller, W.; Heinig, K.-H.

This paper presents computer simulation studies of boron
nitride using ab initio and empirical methods. Results of self-consistent
DFT-LDA calculations are shown, which were performed to characterize static
ground-state properties of the different BN modifications. With help of
these calculations the cubic phase is predicted as stable modification
under standard conditions. Furthermore an empirical interatomic potential
is introduced, which was parameterized by means of ab initio results and
allows a reliable description of structures and energies of Bn, Nm and
BnNm clusters and solid modifications. Finally, using this classical forcefield
a MD-simulation of N2 impact on a h-BN target is presented.

  • Rad. Eff. Def. Solids 142 (1997) 85


Structural modification of receptor binding 99m-Tc complexes in order to improve brain uptake

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

  • European Journal of Nuclear Medicine 24 (1997) 3 pp. 316-319


Bestimmung der Aufbruchtemperatur hochangeregter Kerne aus Isotopenverhältnissen leichter Fragmente

Möhlenkamp, T.

  • Open Access Logo Forschungszentrum Rossendorf; FZR-148
    ISSN: 1436-3976



Development of New Technique for High-Energy Secondary-Electron Measurements in Plasma Immersion Ion Implantation

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

  • Plasma Sources Science & Technolgy 6 (1997) pp. 86-90


Incident Ion Monitoring during Plasma Immersion Ion Implantation by Direct Measurements of High Energy Secondary Electrons

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

The present paper investigated time-resolved incident ion monitoring during PIII processes on the basis of high energy secondary electron measurements with scintillation technique. Taking into consideration the sheath geometry and a secondary electron emission coefficient of the target material, the experimental data were in a good agreement with theoretical predictions for dependences on target-voltage, pressure and plasma density.

  • Lecture (Conference)
    3rd International Workshop on Plasma - Based Ion Implantation (PBII), Dresden, Germany, Sept. 16-18 1996


On size and shape of the average meson fields in the semi-bosonized Nambu & Jona-Lasinio model

Wünsch, R.; Goeke, K.; Meißner, T.

  • Zeitschrift für Physik A 348 (1994) pp. 111


Multifragmentation in peripheral nucleus-nucleus collisions

Trautmann, W.; Adloff, J. C.; Begemann-Blaich, M.; Bonission, P.; Hubele, J.; Immé, G.; Iori, I.; Kreutz, P.; Kunde, G. J.; Leray, S.; Lindenstruth, V.; Lin, Z.; Lynen, U.; u. a.

  • Acta Physica Polonica B 25 (1994) pp. 425


Microscopic analysis of two-body correlations in light nuclei

Peter, A.; Cassing, W.; Häuser, J. M.; Pfitzner, A.

  • Nuclear Physics A 753 (1994) pp. 93


Particle identification in solid-state detectors by means of pulse-shape analysis - results of computer simulations

Pausch, G.; Bohne, W.; Hilscher, D.

  • Nuclear Instruments and Methods in Physics Research A 337 (1994) pp. 573


Tribological Properties of Silicon Nitride Ceramics Modified by Titanium and subsequent Oxygen Implantation

Brenscheidt, F.; Mändl, S.; Günzel, R.; Wieser, E.; Möller, W.; Fischer, W.; Herrmann, M.

A silicon nitride based ceramic was implanted with 150
keV titanium to a fluence of 1017 ions/cm2. Subsequently the samples were
implanted with oxygen using plasma immersion ion implantation (PIII) and
conventional beam-line implantation to stimulate the formation of lubricating
oxides in the surface. The wear is reduced for all implanted samples. The
friction coefficient is slightly higher than in the non-implanted case
for all implantation conditions investigated although oxide formation in
the wear track is suggested by detection of a relatively high amount of
oxygen in the wear track as indicated by energy-dispersive X-ray spectroscopy
(EDX). We discuss the possible mechanisms that lead to the observed tribological

  • Surface & Coatings Technology 97 (1997) 675-679


High-K bands in the 168Yb region

Oliveira, J. R. B.; Frauendorf, S.; Deleplanque, M. A.; Cederwall, B.; Diamond, R. M.; Macchiavelli, A. O.; Stephens, F. S.; Burde, J.; Draper, J. E.; Duyar, C.; Rubel, E.; Becker, J. A.; u. a.

  • Physical Review C 50 (1994) pp. 1360


Wave functions, evolution equations and evolution kernels from light-ray operators of QCD

Müller, D.; Robaschik, D.; Geyer, B.; Dittes, F.-M.; Horejsi, J.

  • Fortschritte der Physik 42 (1994) pp. 101


Evidence for simultaneous breakup in reactions with relativistic alpha-projectiles

Lips, V.; Barth, R.; Oeschler, H.; Avdeyev, S. P.; Karnaukhov, V. A.; Kuznetsov, L. A.; Petrov, L. A.; Bochkarev, O. V.; Chulkov, L. V.; Kuzmin, E. A.; Karcz, W.; Neubert, W.; Norbeck, E.; Gross, C. J.

  • Physics Letters B 338 (1994) pp.141


Multifragmentation induced by relavistic alpha-projectiles

Lips, V.; Barth, R.; Oeschler, H.; Avdeyev, S. P.; Karnaukhov, V. A.; Kuznetsov, L. A.; Petrov, L. A.; Bochkarev, O. V.; Chulkov, L. V.; Kuzmin, E. A.; Karcz, W.; Neubert, W.; Norbeck, E.

  • Physical Review Letters 72 (1994) pp. 1604


Collective motion in selected central collisions of Au on Au at 150 A MeV

Jeong, S. C.; Herrmann, N.; Fan, Z. G.; Freifelder, R.; Gobbi, A.; Hildenbrand, K. D.; Krämer, M.; Randrup, J.; Reisdorf, W.; Schüll, D.; Sodan, U.; Teh, K.; Wessels, J. P.; Pelte, D.; Wohlfarth, D.; u. a.

  • Physical Review Letters 72 (1994) pp. 3468


Bubble free energy in a first-order phase transition

Jenkovszky, L. L.; Kämpfer, B.; Sysoev, V. M.

  • Jadernaja fizika 57 (1994) pp. 187


Selforganization in the nuclear system and irreversibility

Iskra, W.; Müller, M.; Rotter, I.

  • Progress of Theoretical Physics (Suppl.) 116 (1994) pp. 385


Collective expansion in central Au + Au collisions

Hsi, W. C.; Kunde, G. J.; Pochodzalla, J.; Lynch, W. G.; Tsang, M. B.; Begemann-Blaich, M.; Bowman, D. R.; Charity, R. J.; Cosmo, A.; Ferrero, A.; Gelbke, C. K.; Glasmacher, T.; u. a.

  • Physical Review Letters 73 (1994) pp. 3367


Verfahren zur Messung der integralen Massenfeuchte in Zweiphasenströmungen

Hensel, F.; Enghardt, W.; Prasser, H.-M.

Es wird ein Verfahren zur Messung der Massenfeuchte von in Rohrleitungen geführten Zweiphasenströmungen (gasförmig/flüssig) mit kleinem Massenstromanteil der flüssigen Phase (<30%) beschrieben, dadurch gekennzeichnet, dass die Positronen in die Strömung emittiert werden und die bei der Annihilation der in die Strömung emittierten Positronen entstehende Gamma-Strahlung in Abhängigkeit von der Entfernung des Annihilationsortes von der Positronenquelle gemessen wird und dadurch, dass die Form der Reichweitenverteilung der Positronen zur Bestimmung der Massenfeuchte verwendet wird.

  • Patent
    DE P 4 423 665 A1



Consequences of neutron-proton interaction on backbending

Frauendorf, S.; Sheikh, A.; Rowley, N.

  • Physical Review C 50 (1994) pp. 196


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


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


Long-time behavior of the semiclassical baker's map

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

  • Physical Review E 49 (1994) pp. R963


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


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


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


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


"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


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


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


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


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


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


The FOPI Detector at SIS/GSI

Ritman, J. L.

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


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


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


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


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


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


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


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


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


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


"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


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


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


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


Matwej Bronstein und die Anfänge der Quantengravitation

Gorelik, G.; Rotter, H.

  • Physikalische Blätter 51 (1995) pp. 423


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


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


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


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


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


Characterisation of Oxide Layers Formed by Hydrothermal Chromate Treatment

Thieme, M.

  • Corros. Sci. 34 (1993) pp. 1557


Transformation of Titanium Carbide Precipitations under Hydrothermal Conditions

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

  • Corros. Sci. 34 (1993) pp. 383


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


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


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


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


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


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


Structural Investigations on Pyrolysed Polycarbosilanes

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

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


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


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


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


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