H2 Superexcited States: Experimental and Theoretical Characterization of their Competing Decay-Channel Fluorescence, Dissociation, and Ionization

被引：44

作者：

Glass-Maujean, M. ^{[1
]}

Jungen, Ch. ^{[2
,3
]}

Schmoranzer, H. ^{[4
]}

Knie, A. ^{[5
]}

Haar, I. ^{[5
]}

Hentges, R. ^{[5
]}

Kielich, W. ^{[5
]}

Jaenkaelae, K. ^{[5
]}

Ehresmann, A. ^{[5
]}

机构：

[1] Univ Paris 06, Lab Phys Mol Atmosphere & Astrophys, F-75252 Paris 05, France

[2] UCL, Dept Phys & Astron, London WC1E 6BT, England

[3] Univ Paris 11, CNRS, Lab Aime Cotton, F-91405 Orsay, France

[4] Univ Kaiserslautern, Fachbereich Phys, D-67653 Kaiserslautern, Germany

[5] Univ Kassel, Inst Phys, D-34132 Kassel, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 18期

关键词：

QUANTUM-DEFECT-THEORY; EMISSION; ULTRAVIOLET; HYDROGEN; (1)PI(U); SPECTRUM; H2;

D O I：

10.1103/PhysRevLett.104.183002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The absolute cross sections for the competing decay channels fluorescence, dissociation, and ionization of photoexcited long-lived superexcited H-2 molecular levels have been measured from the ionization threshold of H-2 up to the H(1s) + H(n = 3) dissociation limit. The total and partial natural widths of these levels have been determined. Good agreement is found with first principles calculations carried out by multichannel quantum defect theory. The calculations reproduce the balance between the competing decay processes as well as its substantial level-to-level evolution.

引用

页数：4

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