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Positron lifetime in inhomogeneous metallic materials
Author(s) -
Gondzik J.,
Stachowiak H.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170221216
Subject(s) - jellium , positron , positron annihilation , formalism (music) , homogeneous , electron , metal , annihilation , materials science , physics , atomic physics , condensed matter physics , nuclear physics , thermodynamics , metallurgy , art , musical , visual arts
Abstract A positron is considered in an inhomogeneous jellium model according to a formalism following from the theory of liquids. This leads to a nonlocal treatment of the screening of this particle. Annihilation rates have been found inferior to the ones for a homogeneous electron gas, in agreement with positron lifetime measurements.