Photodissociation dynamics of Ar2+ and Ar3+ excited by 527 nm photons

被引：10

作者：

Lepere, V. ^{[1
,2
,3
,4
]}

Picard, Y. J. ^{[1
,2
]}

Barat, M. ^{[1
,2
]}

Fayeton, J. A. ^{[1
,2
]}

Lucas, B. ^{[1
,2
]}

Beroff, K. ^{[1
,2
]}

机构：

[1] Univ Paris 11, UMR 8625, Collis Atom & Mol Lab, F-91405 Orsay, France

[2] CNRS, UMR 8625, F-91405 Orsay, France

[3] Univ Paris 11, UPR 3361, Photophys Mol Lab, F-91405 Orsay, France

[4] CNRS, UPR 3361, F-91405 Orsay, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 130卷 / 19期

关键词：

argon; atomic clusters; electron capture; molecule-photon collisions; photodissociation; photoexcitation; positive ions; resonant states; COLLISION-INDUCED FRAGMENTATION; ABSORPTION CROSS-SECTIONS; IONIC-SODIUM CLUSTERS; VISIBLE PHOTODISSOCIATION; 3-BODY FRAGMENTATION; ELECTRONIC STATES; POTENTIAL CURVES; ARGON CLUSTERS; PHOTOFRAGMENTATION; PHOTOABSORPTION;

D O I：

10.1063/1.3130974

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photofragmentation dynamics of Ar-2+ and Ar-3+ clusters has been investigated at a 527 nm wavelength (2.35 eV) using a setup that allows simultaneous detection of the ionic and neutral fragments in a coincidence experiment. Measurement of positions and times of flight enables in principle a complete description of the fragmentation dynamics. The photofragmentation dynamics of Ar-3+ clusters is similar to that of Ar-2+ with, in addition, the ejection of a third fragment that can be neutral or ionized via a resonant electron capture. This is attributed to the triangular geometry of the Ar-3+ ion.

引用

页数：7

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