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基于近解离展开以及在B1<--X0+激发光谱中观测到的“热”带的镉-氩B1(3σ+)和X0+(1σ+)态的原子间势

Interatomic potentials of cadmium-argon B1(3sigma+) and X0+(1sigma+) states based on near-dissociation expansion and 'hot' bands observed in the B1 <-- X0+ excitation spectrum.

作者信息

Koperski J, Kiełbasa S M, Czajkowski M

机构信息

Instytut Fizyki, Uniwersytet Jagielloński, Kraków, Poland.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2000 Jul;56A(8):1613-26. doi: 10.1016/s1386-1425(00)00213-4.

DOI:10.1016/s1386-1425(00)00213-4
PMID:10907889
Abstract

B1(3sigma+) <-- X0+(1sigma+) excitation spectrum of the cadmium-argon van der Waals molecule has been recorded in the experiment of a continuous supersonic molecular beam crossed with a pulsed dye laser beam. The B1-state dissociation energy was directly observed and a long-range behavior of the B1-state intermolecular potential was derived using a near-dissociation expansion procedure of LeRoy and Bernstein. A first-time direct determination of the X0+ ground state characteristics based on 'hot' bands observed is presented as well. The new result is compared with other experimental and theoretical reports available in the literature.

摘要

在连续超声分子束与脉冲染料激光束交叉的实验中，记录了镉 - 氩范德华分子的B1(3σ+) ← X0+(1σ+) 激发光谱。直接观测到了B1态的解离能，并使用勒罗伊和伯恩斯坦的近解离展开程序推导了B1态分子间势的长程行为。还首次基于观测到的“热”带对X0+基态特征进行了直接测定。将新结果与文献中其他可用的实验和理论报告进行了比较。

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