L3 subshell alignment in bismuth induced by swift silicon ions

Ajay Kumar, A. N. Agnihotri, D. Misra, S. Kasthurirangan, L. Sarkadi, L. C. Tribedi

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3 Citations (Scopus)


Angular-and impact energy-dependence of L x-rays of bismuth in collisions with silicon ions has been measured. Unlike isotropic emission of the-group and the-group x-rays, the Ll x-ray yield was observed to have impact energy dependent anisotropy emission. The anisotropy parameter for the Ll x-ray line was obtained by using the intensity ratio of the Ll-to-other L x-rays in the same spectrum. The alignment parameter of the L3 subshell was deduced from the measured anisotropy parameter of the Ll x-ray and has been compared with those obtained from the collisional theoretical models based on the plane-wave Born approximation and its extension.

Original languageEnglish
Article number065202
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number6
Publication statusPublished - Mar 28 2015



  • L x-rays
  • alignment parameter
  • angular distribution
  • ion-atom collisions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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