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 language | English |
|---|---|
| Pages (from-to) | 1943-1966 |
| Number of pages | 24 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 33 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2000 May 28 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
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Maeda, K., Ueda, K., Aymar, M., Matsui, T., Chiba, H., & Ito, K. (2000). Absolute photoionization cross sections of the Ba ground state in the autoionization region: II. 221-209 nm. Journal of Physics B: Atomic, Molecular and Optical Physics, 33(10), 1943-1966. https://doi.org/10.1088/0953-4075/33/10/309