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Chapter and Conference Paper
Structural Properties of the Donor Indium in Nanocrystalline ZnO
The structural properties of the nanocrystalline semiconductor ZnO (nano-ZnO) doped with the donor Indium were investigated by perturbed γγ angular correlation spectroscopy (PAC) and extended X-ray absorption ...
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Chapter and Conference Paper
Experimental Verification of Calculated Lattice Relaxations Around Impurities in CdTe
We have measured the lattice distortion around As (acceptor) and Br (donor) in CdTe with fluorescence detected X-ray absorption spectroscopy. We could experimentally verify the lattice relaxation with a bond l...
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Article
Structural properties of the donor indium in nanocrystalline ZnO
The structural properties of the nanocrystalline semiconductor ZnO (nano-ZnO) doped with the donor Indium were investigated by perturbed γγ angular correlation spectroscopy (PAC) and extended X-ray absorption ...
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Article
Experimental Verification of Calculated Lattice Relaxations Around Impurities in CdTE
We have measured the lattice distortion around As (acceptor) and Br (donor) in CdTe with fluorescence detected X-ray absorption spectroscopy. We could experimentally verify the lattice relaxation with a bond l...
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Article
EXAFS Studies of the Local Structure Around Zn in Cd1−x Zn x Te
X-ray absorption spectroscopy has been used to obtain information on the local structure around Zn atoms in CdTe. The Zn–Te distance is 5% smaller than the Cd–Te bond-length in the bulk, but slightly larger th...
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Article
Nuclear probes in the materials science of solar cells
We present background material about solar cells and the copper-indium-sulphur system and then discuss three important processes for the production of CuInS2 solar-cell material. These include: sulphurization of ...
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Article
PAD investigation of19F in fullerites
Perturbed angular distribution experiments on19F implanted into fullerites revealed a large fraction of fluorine atoms which are not subject to static quadrupole interactions in contrast to other allotropic forms...
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Article
Nuclear structure study of the neutron deficient cadmium isotopes100, 101, 102Cd
The neutron-deficient nuclei100,101Cd were identified for the first time in — beam following the reactions58Ni +46,48Ti and58Ni +50Cr at 230 MeV and 245 MeV bombarding energy of the58Ni beams. Theγ-decay of the i...
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Article
The Knight shift of francium in mercury
For Fr in Hg an extremely small Knight shift has been found as compared to the shift known for an alkali metal host. It indicates an almost complete loss of the outer s-electron of the alkali atom Fr when embe...
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Article
New developments in PAC and PAD
Recent developments in both methods, Perturbed Angular Correlation (PAC) and Perturbed Angular Distribution (PAD) concern improvements in the instrumentation for various applications and sophistications in det...
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Article
Introduction to PAC/PAD
Both methods, Perturbed Angular Correlation (PAC) utilizing radioactive probes and Perturbed Angular Distribution (PAD) following nuclear reactions measure hyperfine interaction parameters and allow to study m...
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Article
In-beam measurements of nuclear moments
Nuclear moments contribute valuable information to nuclear structure studies of nuclei under extreme conditions, such as nuclei at high angular momentum or far from stability. While the magnetic moment is sens...
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Article
The Knight shift of francium in cesium
Using the PAD technique the Knight shift for Fr in Cs at 273 K has been measured with the 15− isomer in212Fr. The result 4.9(3)% may be well understood in terms of the conventional analysis. A dominant correction...
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Article
Knight shift of sp-elements in bismuth
A large negative term in the Knight shift has been found for a number of open p-shell elements of the 5th and 6th period in the host Bi which disappears at the p-shell closure.
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Article
Temperature dependence of the electric field gradient of Hg in Bi
The temperature dependence of the nuclear quadrupole interaction of the188Hg(12+) isomer in a Bi host has been measured by the TDPAD technique. Assuming that the T3/2 law is valid for this system a fit at the hig...
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Chapter
Magnetic Behaviour of Isolated Sm Ions in γ-Ce and α-Ce
The temperature dependence of the local susceptibility of isolated Sm ions, recoil implanted by nuclear reactions into γ-Ce and pure γ-Ce, was observed by the time differential perturbed angular γ-ray distribu...
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Article
Quadrupole moments of neutron isomers in Sm isotopes
The quadrupole moments of the neutron isomers in140,142Sm were determined by measuring the quadrupole interaction of Sm in Gd using single crystals. The moment for the 10+ isomer in140Sm was determined to be ¦Q¦=...
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Article
E2 moments andg-factors in neutron deficient lead isotopes
The half-lives of the (vi 13/2)2 I π=12+ isomers in190, 192pb were measured asT 1/2 =7.9(4) μs and 1.10(5) μs, respectively. The quadrupole moment and theg-factor of the corresponding state in194Pb were determine...
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Article
Antimony in cadmium — An extreme case of probe atom dependent EFG
The electric field gradient of Sb in Cd was determined by a PAD measurement on112Sb recoil-implanted into a Cd single crystal. We observe an extremely small value compared with known values on the probes Cd, In, ...
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Article
Quadrupole moment of the 19/2− isomer in115Sb
The quadrupole moment of the 19/2− isomeric state in115Sb has been measured using the time differential perturbed angular distribution method. From the quadrupole coupling constante 2 Qq/h=66(3) MHz atT=370 K in ...