Identification and characterization of the dielectronic process in the formation of two K-shell vacancies in atomic Li by fast electron impact

J. Rangama, D. Hennecart, N. Stolterfoht, J. A. Tanis, B. Sulik, F. Frémont, X. Husson, J. Y. Chesnel

Research output: Contribution to journalArticle

Abstract

Electron correlation effects in the production of two K-shell vacancies in lithium are investigated by bombarding atomic Li with 5-keV electrons. High-resolution Auger electron spectra show that discrete doubly vacant K-shell states are predominantly formed from ionization plus excitation, giving rise to the [Formula Presented] and [Formula Presented] states of [Formula Presented] For these fast electron projectiles, the shake-up and dielectronic manifestations of the electron-electron interaction are shown to be the only mechanisms for creating the observed hollow states. The formation of the [Formula Presented] states is found to be mediated only by the dielectronic process, permitting this aspect of the electron-electron interaction to be separately identified and its contribution characterized.

Original languageEnglish
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume68
Issue number4
DOIs
Publication statusPublished - Jan 1 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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