Even-parity auto-ionizing states of iridium I observed by resonance laser ionization spectroscopy

被引：3

作者：

Philipsen, V ^{[1
]}

Bastiaansen, J ^{[1
]}

Lievens, P ^{[1
]}

Vandeweert, E ^{[1
]}

Silverans, RE ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Vaste Stoffys & Magnetisme, B-3001 Louvain, Belgium

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2002年 / 57卷 / 01期

关键词：

iridium; resonance ionization spectroscopy; auto-ionizing states; atomic spectroscopy;

D O I：

10.1016/S0584-8547(01)00360-3

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Auto-ionizing states of neutral iridium were observed in the continuum structure near the first ionization limit using one-color and two-color two-step resonance laser ionization spectroscopy. The total angular momentum of 20 even-parity auto-ionizing states could be determined from a combined analysis of the two-color spectra obtained with ionization schemes using intermediate states with different total angular momentum. Double-resonant ionization schemes were evaluated by fluence-dependence measurements, and photo-ionization cross-sections for resonant ionization transitions were determined. We could also identify several high-lying members of ns, np and nd Rydberg series converging to the first ionization limit of the atom. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 107

页数：13

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