✦ LIBER ✦

First Observations of Laser-Excited Hg3and Hg2RG Spectra in a Supersonic Expansion Beam

✍ Scribed by J. Koperski; J.B. Atkinson; L. Krause

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 318 KB
Volume: 187
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1997.7491

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✦ Synopsis

Triatomic van der Waals complexes of mercury have been observed in a supersonic expansion beam crossed with a laser beam to produce excitation and fluorescence spectra. The expansion beam consisting of mercury and a (noble) carrier gas (RG) was excited in three separate spectral regions: in the vicinity of the Hg 2537 A ˚intercombination line, near the (forbidden) Hg 6 3 P 2 R 6 1 S 0 atomic transition (2200-2290 A ˚), and in the region of the Hg 2 G0 / u R X 0 / g transition (1975-2080 A ˚). The resulting spectra, which were recorded in the spectral range 1900-6000 A ˚, contained, in addition to the known Hg, Hg 2 , and HgRG components, new absorption and fluorescence bands that are ascribed to Hg 2 RG and Hg 3 complexes.

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✍ J. Koperski; J.B. Atkinson; L. Krause 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 217 KB

The G0 / u (6 1 P 1 ) -X 0 / g excitation and fluorescence spectra of Hg 2 van der Waals molecules, produced in a pulsed free-jet supersonic expansion beam crossed with a pulsed dye-laser beam, were studied using Ar as the carrier gas. A well-resolved vibrational structure of the G0 / u R X 0 / g ex