EVALUATION OF ELECTRIC AND MAGNETIC PROPERTIES OF DIATOMIC MOLECULES FROM VIBRATION-ROTATIONAL SPECTRA OF SAMPLES WITHOUT EXTERNALLY APPLIED FIELDS
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Date
1994
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Ohio State University
Abstract
We have developed a method based on well established equations that enables us to extract from the wavenumber data of vibration-rotational transitions of diatonic molecules in electronic states $^{1}\Sigma$ not only the molecular properties related to the definition of the radial functions for potential energy and related effects but also the electric dipolar moment and the rotational g factor. The latter quantity is related to the magnetisability and thus to the paramagnetic susceptibility independent of temperature, and this infarmation is deduced from only the wavenumber data of multiple isotopic variants even though the spectra are measured, in absorption or emission, for samples without Externally applied electric or magnetic fields. Accurate deductions of these electric and magnetic properties require highly accurate spectral measurements that may include both pure rotational transitions and vibration-rotational transitions, or just the latter. Applications of this method to spectra of diatomic molecules, particularly hydrides including A1H and GaH, will be critically discussed.
Description
This research done partly in collaboration with S. C. Liao and E. Tiemann is supported financially by the National Science Council of the Republic of China
Author Institution: Academia Sinica, Institute of Atomic and Molecular sciences
Author Institution: Academia Sinica, Institute of Atomic and Molecular sciences