Determination of the ground-state Landé factor for diatomic molecules by a beat-resonance method

Non-linear resonance of quantum beats under harmonically modulated excitation in a magnetic field is considered as a method of determining the Landé factor for a single electronic-vibrational-rotational (EVR) level of a diatomic molecule in its electronic ground state. The role of the sign of the La...

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Bibliographic Details
Published inChemical physics letters Vol. 167; no. 1; pp. 129 - 136
Main Authors Auzin'sh, M.P., Nasyrov, K.A., Tamanis, M.Ya, Ferber, R.S., Shalagin, A.M.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 16.03.1990
Elsevier Science
Subjects
Atomic and molecular physics
Exact sciences and technology
Fine and hyperfine structure
Molecular properties and interactions with photons
Physics
Properties of molecules and molecular ions
Fluorescence spectrum
Diatomic molecule
Quantum beat
Electronic structure
Rovibronic energy level
Laser beam
G factor
Ground state
Resonance
Experimental study
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Summary:Non-linear resonance of quantum beats under harmonically modulated excitation in a magnetic field is considered as a method of determining the Landé factor for a single electronic-vibrational-rotational (EVR) level of a diatomic molecule in its electronic ground state. The role of the sign of the Landé factor in the ground and excited levels, stimulated emission and “fly-through” relaxation conditions are analysed using a semiclassical description of the beat resonance signal in laser-induced fluorescence. Refined Landé factor values of EVR levels of 39K 2(X 1Σ g +) and 130Te 2(X0 g +) are obtained by means of fitting experimental signals.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(90)85083-O