Interference of direct and resonant channels in electron-impact ionization of [Formula Presented] ions: Unified R-matrix calculation and experiment

H. Teng, H. Knopp, S. Ricz, S. Schippers, K. A. Berrington, A. Müller

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Calculated total cross sections for electron-impact ionization of [Formula Presented] using a unified theoretical approach are compared with high-resolution high-precision measurements clearly demonstrating interference of resonant multielectron reaction channels with direct ionization and inner-shell excitation. In particular, the so-called READI process, i.e., K-shell excitation with simultaneous capture of the incident electron (resonant-excitation) and a subsequent three-electron interaction resulting in simultaneous ejection of two electrons (auto-double-ionization) has been studied in unprecedented detail. The calculation is in very good agreement with the experimental cross section.

Original languageEnglish
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume61
Issue number6
DOIs
Publication statusPublished - Jan 1 2000

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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