Photoassociation spectroscopy of collisional pairs of mercury atoms: Determination of parameters of molecular terms

The photoassociation spectrum of an equilibrium vapor of mercury atoms in the range of 34960–37250 cm−1 is recorded with the help of a tunable laser in observations of laser-induced fluorescence. The Franck-Condon fstructure, i.e., periodic variations in absorption intensity against a continuous bac...

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Bibliographic Details
Published inOptics and spectroscopy Vol. 90; no. 4; pp. 516 - 525
Main Authors Zuev, V. S., Eden, J. G., Tran, H. C.
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.04.2001
Subjects
Absorption spectra
Laser induced fluorescence
Mathematical analysis
Parameters
Periodic variations
Schrodinger equation
Tunable lasers
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Summary:The photoassociation spectrum of an equilibrium vapor of mercury atoms in the range of 34960–37250 cm−1 is recorded with the help of a tunable laser in observations of laser-induced fluorescence. The Franck-Condon fstructure, i.e., periodic variations in absorption intensity against a continuous background, is observed. The structure makes it possible to determine spectroscopic parameters of the upper attractive potential and the lower repulsive potential including that with a van der Waals well. The absorption spectrum of collisional pairs of mercury atoms is calculated using the Numerov-Cooley procedure for integrating the Schrödinger equation. Potential curves of the upper and lower states Hg2(D1u) and Hg2(X0g+) are determined by comparing the calculated spectra with the experimental one.
ISSN:0030-400X
1562-6911
DOI:10.1134/1.1366744