Aufsatz
Calculation of isomer shift in Mössbauer spectroscopy
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.
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.
Zitierform
In: Physical review / B. - Ridge, NY : APS, 5.1972, S. 3445 - 3449Zitieren
@article{urn:nbn:de:hebis:34-2008091523798,
author={Fricke, Burkhard and Waber, James Thomas},
title={Calculation of isomer shift in Mössbauer spectroscopy},
year={1972}
}
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2008-09-15T13:10:38Z 2008-09-15T13:10:38Z 1972 1098-0121 0163-1829 0556-2805 urn:nbn:de:hebis:34-2008091523798 http://hdl.handle.net/123456789/2008091523798 425215 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Calculation of isomer shift in Mössbauer spectroscopy Aufsatz 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. open access In: Physical review / B. - Ridge, NY : APS, 5.1972, S. 3445 - 3449 Fricke, Burkhard Waber, James Thomas Extern
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