Observation of a new electronic state of CO perturbing W 1Π(ν=1)

被引：14

作者：

Heays, A. N. ^{[1
]}

Eidelsberg, M. ^{[2
,3
]}

Stark, G. ^{[4
]}

Lemaire, J. L. ^{[2
,3
]}

Gavilan, L. ^{[2
,3
]}

Federman, S. R. ^{[5
]}

Lewis, B. R. ^{[6
]}

Lyons, J. R. ^{[7
]}

de Oliveira, N. ^{[8
]}

Joyeux, D. ^{[8
]}

机构：

[1] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[2] Observ Paris, LERMA, F-92195 Meudon, France

[3] CNRS, UMR 8112, F-92195 Meudon, France

[4] Wellesley Coll, Dept Phys, Wellesley, MA 02481 USA

[5] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA

[6] Australian Natl Univ, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

[7] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA

[8] Orme Merisiers, Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2014年 / 141卷 / 14期

基金：

美国国家航空航天局;

关键词：

OSCILLATOR-STRENGTH MEASUREMENTS; HIGH-RESOLUTION; CARBON-MONOXIDE; PREDISSOCIATION RATES; 115; NM; CROSS-SECTIONS; B-X; ABSORPTION; BANDS; PHOTODISSOCIATION;

D O I：

10.1063/1.4897326

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：

We observe photoabsorption of the W(1) <- X(0) band in five carbon monoxide isotopologues with a vacuum-ultraviolet Fourier-transform spectrometer and a synchrotron radiation source. We deduce transition energies, integrated cross sections, and natural linewidths of the observed rotational transitions and find a perturbation affecting these. Following a deperturbation analysis of all five isotopologues, the perturbing state is assigned to the nu = 0 level of a previously unobserved (1)Pi state predicted by ab initio calculations to occur with the correct symmetry and equilibrium internuclear distance. We label this new state E '' (1)Pi. Both of the interacting levels W(1) and E ''(0) are predissociated, leading to dramatic interference effects in their corresponding linewidths. (C) 2014 AIP Publishing LLC.

引用

页数：11

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