Absolute photoionization cross sections of the Ba ground state in the autoionization region: II. 221-209 nm

K. Maeda, Kiyoshi Ueda, M. Aymar, T. Matsui, H. Chiba, K. Ito

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Absolute photoionization cross sections of Ba in the autoionization region of 209-221 nm have been measured with a bandwidth of 0.0014 nm. The measured cross sections are compared with those obtained from R-matrix calculations combined with multichannel quantum defect theory (MQDT) techniques. The variations of the experimental lineshape parameters for the 5d(2D3/2)np[ 1/2 ] and 5d(2D5/2)np[3/2] series are analyzed with empirical three-channel MQDT models. From the calculation of partial density of states in 6pns channels, the perturber of the 5d(2D3/2)np[ 1/2 ] series is confirmed to be the 6p7s 3P1 level and that of the 5d(2D5/2)np[3/2] series is identified as the 6p7s 1P1 level.

Original languageEnglish
Pages (from-to)1943-1966
Number of pages24
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume33
Issue number10
DOIs
Publication statusPublished - 2000 May 28

ASJC Scopus subject areas

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

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