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Lattice parameter effect on the isomeric shift
Author(s) -
Pollak H.
Publication year - 1962
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19620020406
Subject(s) - hydrostatic pressure , electron , atomic physics , atom (system on chip) , lattice (music) , wave function , physics , hydrostatic equilibrium , condensed matter physics , chemistry , quantum mechanics , thermodynamics , embedded system , computer science , acoustics
By assuming that the number of conduction electrons is not perturbed by a slight hydrostatic pressure, we have computed the nuclear energy shift of the 14.4 KeV gamma ray of Fe 57 resulting from compression in an iron crystal. The atomic wave functions are those of the free atom but they are no longer allowed to extend to infinity: they are limited to the Wigner‐Seitz polyhedron. For a pressure of 3000 kg/cm 2 the calculated shift is 0.83 × 10 −10 eV as compared to the experimental value of 1.12 × 10 −10 eV obtained by P OUND .