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Correlation energy from compton scattering and positron annihilation data
Author(s) -
Das G. P.,
Chaddah P.
Publication year - 1983
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.2221190204
Subject(s) - compton scattering , physics , positron , annihilation , thermalisation , moment (physics) , nuclear physics , energy (signal processing) , scattering , correlation , atomic physics , optics , electron , quantum mechanics , mathematics , geometry
The second moments of Compton profiles are used to obtain electronic energies. It is proposed that the second moment of a line‐slit positron annihilation angular correlation curve, in comparison with the second moment of Compton profiles, can yield the correlation energy contribution to the cohesive energy of a material. The need for correcting the PAAC data for the positron enhancement factor and thermalization effects is examined. Numerical estimates of the errors involved are given for sodium and lithium and the possible applicability of the proposal is shown.