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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
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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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
Magnetic moment of the 12+-isomer in192Pb
The magnetic moment of the 12+-isomer in192Pb has been measured using the PAD technique. The isomer was populated by156Gd (40Ar,4n)-reaction with a pulsed40Ar-beam of 185 MeV. The result for the g-factor is g=−0....
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Article
Probe atom dependence of the electric field gradient in bismuth
The electric field gradient of T1 in Bi has been determined with the PAD method. The observed value follows the general trend of sp-probe atoms in the group V semimetals in accordance with a covalent bond pict...
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Article
Strong probe atom dependence of the electric field gradient in Bismuth
The nuclear quadrupole interaction of the 8+ isomers in206, 208Po was measured in the semimetallic host Bi. The comparison of the extracted electric field gradient eq for PoBi with the values for the neighboring ...
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Article
The paramagnetism of dilute fe impurities in PT
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Article
Local paramagnetism of BCC-and FCC-iron
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The electric field gradient of Sb in Bi
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Article
The electric field gradient for Gd in gadolinium metal
We have examined the temperture dependence of the efg for GdGd above the Curie point. Using anI π =10+ isomer in144Gd as a probe nucleus, we find a weakT 3/2 dependence withB=(1...