TY - JOUR
T1 - Absolute photoionization cross sections of the Ba ground state in the autoionization region
T2 - II. 221-209 nm
AU - Maeda, K.
AU - Ueda, Kiyoshi
AU - Aymar, M.
AU - Matsui, T.
AU - Chiba, H.
AU - Ito, K.
PY - 2000/5/28
Y1 - 2000/5/28
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-4075/33/10/309
DO - 10.1088/0953-4075/33/10/309
M3 - Article
AN - SCOPUS:0033746858
VL - 33
SP - 1943
EP - 1966
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 10
ER -