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Phonons in F.C.C. Thorium
Author(s) -
Verma M. L.,
Rathore R. P. S.
Publication year - 1994
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.2221850105
Subject(s) - phonon , realization (probability) , exponential function , thorium , dispersion (optics) , physics , dispersion relation , statistical physics , mathematics , quantum mechanics , mathematical analysis , nuclear physics , statistics , uranium
The generalized form of the exponential potential is suitably extended to account for a) a realistic realization of interactions at small separations, b) embodying three‐body and electronic effects into the interaction through the parameters n and m, respectively, in an alternative and simpler form, c) a model free from the usual fitting procedure. The efficacy of the potential known as extended generalized exponential potential (EGEP) so developed is employed to compute the phonon dispersion in thorium. The predictions show good agreement with experimental findings.