A coincidence study of electron and positron impact ionization of Ar (3p) at 1 keV

作者:Campeanu Radu I*; Walters James H R; Whelan Colm T
来源:European Physical Journal D, 2015, 69(10): 1-5.
DOI:10.1140/epjd/e2015-60315-1

摘要

Distorted-wave calculations of the triple differential cross section (TDCS) are presented for electron and positron impact ionization of Ar(3p) in coplanar asymmetric geometry at an impact energy of 1 keV and are compared with a recent experiment. The experiment indicates that the positron TDCS is generally larger than the equivalent electron TDCS. It is shown that the magnitude of the TDCS is extremely sensitive to the energy of the ejected electron and that only when the cross section is averaged over energy do we get a reasonable agreement with experiment.

  • 出版日期2015-10-29