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Please use this identifier to cite or link to this item: http://nbn-resolving.de/urn:nbn:de:hebis:34-2008091523798

Titel: Calculation of isomer shift in Mössbauer spectroscopy
Autor(en): Fricke, BurkhardWaber, James Thomas
Klassifikation (DDC): 530 - Physik (Physics)
Issue Date: 1972
Zitierform: In: Physical review / B. - Ridge, NY : APS, 5.1972, S. 3445 - 3449
Zusammenfassung: The approximations normally used in the calculation of the isomer shift are compared with the exact expressions using Dirac-Slater orbitals and a three-parameter Fermi-type nuclear charge distribution. The nonuniformity of the electronic density over the nuclear volume affects the results. Different choices of the nuclear surface thickness t and the radius c in the protonic density P_N (\gamma) also affects the isomer shift differently even though the values are chosen to yield a given value of \delta <r^2>. The change in the electronic charge density which is caused by the alteration of P_N (\gamma) in the ground state and excited state of the nucleus is discussed using two extrememodels and the possible influence on the observable isomer shift is estimated.
URI: urn:nbn:de:hebis:34-2008091523798
ISSN: 1098-01210163-18290556-2805
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