Artial cross sections for excitation of He(3 1D) states by electron impact

A. G. Mikosza*, R. Hippler, J. B. Wang, J. F. Williams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report absolute measurements at a rank four state multipole for He(3 1D) excitation by electron impact with a polarized first-photon-second-photon coincidence technique. The presented technique permits the extraction of total (scattering angle integrated) partial cross sections σm for the excitation of He(3 1Dm) magnetic substates (m=0,±1,±2). The present results stringently test existing theories and, for example, indicate that most theoretical calculations underestimate the partial cross sections σ0 and σ1 and overestimate the σ2. The recent convergent close-coupling calculations of Fursa and Bray [Phys. Rev. A 52, 1279 (1995)] are in excellent agreement with all our measured data.

Original languageEnglish
Pages (from-to)3287-3294
Number of pages8
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume53
Issue number5
Publication statusPublished - May 1996
Externally publishedYes

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