Premium
Double Screening Problem in Dechanneling by Point Defects
Author(s) -
Siddiqui A. M.,
Harikumar V.,
Pathak A. P.
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.2221850103
Subject(s) - impurity , electron , atomic physics , lattice (music) , crystal (programming language) , conduction electron , condensed matter physics , materials science , chemistry , physics , nuclear physics , organic chemistry , computer science , acoustics , programming language
A simple double screening model is used to calculate the interaction potential between an energetic channeled μ + and an impurity (O) in an otherwise perfect single crystal (Ta). The twofold screening of the nuclear charge of the impurity is first due to the atomic electrons and second due to conduction electrons of the host crystal (Ta). Using this potential the dechanneling cross‐section of muons due to the oxygen impurity in the lattice of Ta along various planes is evaluated. Three charge states of the oxygen impurity are considered and the corresponding dechanneling cross‐sections are predicted.