Laser induced fluorescence of the MgCa molecule

Details Laser induced fluorescence of the MgCa molecule Laser induced fluorescence of the MgCa molecule

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jchph..82.3491a&link_type=abstract

Journal of Chemical Physics (ISSN 0021-9606), vol. 82, April 15, 1985, p. 3491-3501.

Physics

Chemical Physics

2

Calcium Compounds, Dye Lasers, Fluorescence, Laser Induced Fluorescence, Magnesium Compounds, Stellar Atmospheres, Tunable Lasers, Absorption Spectra, Energy Levels, Franck-Condon Principle, Molecular Excitation, Quantum Numbers

Scientific paper

Magnesium and calcium form some of the most prominent absorption features in the spectra of many stellar atmospheres. A detailed study of the MgCa molecular spectrum is, therefore, highly desirable for the spectral analysis of a number of cold stellar atmospheres. Miller et al. (1977) have observed an absorption band which they assigned to the MgCa molecule. In the present investigation, the MgCa molecules for the study were generated in a modified concentric heat pipe oven. The horizontal tube in the oven contained Mg2, Ca2, and MgCa molecules. The radiation of an argon ion and of a krypton ion laser and of a tunable, stabilized, single mode dye laser were used to excite the molecules inside the cell in the gas phase. The laser induced fluorescence was observed with a 2 m grating spectrometer. The observed spectra are listed and discussed.

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