Open AccessANGULAR DISTRIBUTIONS IN THE LOW-ENERGY (e,2e) REACTION OF Li+
Author(s) -
Jia Xiang-Fu,
Yand Wei
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1783
Subject(s) - atomic physics , electron , physics , ionization , perpendicular , coulomb , range (aeronautics) , plane (geometry) , electric field , ion , quantum mechanics , materials science , geometry , mathematics , composite material
Based on the BBK theory, triple differential cross sections (TDCS) have been calculated for ionization of Li+ (1s2) by electron impact. A coplanar, equal-energy, fixed-relative angle kinematics is chosen and the particular case where the scattered and ionized electrons emerge perpendicular to each other is emphasized The incoming electron state is considered by a Coulomb wave from the long-range attraction between the incident electron and the screened ionic nucleus or approximated by a plane wave. It is shown that the maximum probability for emission near threshold is a configuration in which the interelectronic vector is aligned along the beam direction and the minimum probability when this vector is perpendicular to the beam, and that the initial channel Coulomb field play a major role in determining the TDCS at near threshold energy.