Nuclear spin conversion in molecules induced by hyperfine interactions

P. L. Chapovsky

doi:10.1117/12.267735

3 March 1997 Nuclear spin conversion in molecules induced by hyperfine interactions

P. L. Chapovsky

Proceedings Volume 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy; (1997) https://doi.org/10.1117/12.267735
Event: 12th Symposium and School on High Resolution Molecular Spectroscopy, 1996, St. Petersburg, Russian Federation

Abstract

In this paper the role of hyperfine interactions in molecular ortho-para conversion is considered. The main experimental results in the CH₃F spin conversion are briefly described. The general theory of nuclear spin conversion in molecules based on intramolecular ortho-para state mixing is given. Two types of ortho-para state mixing are taken into account: the spin-spin interaction between molecular nuclei and the spin-rotation interaction. The level-crossing spectra for the spin conversion in ¹³CH₃F and ¹²CH₃F molecules are calculated for an electric field range of 0 - 10⁴ V/cm. The spin conversion spectrum, discussed here, is an example of a new type of Doppler-free spectroscopy.

Citation Download Citation

P. L. Chapovsky "Nuclear spin conversion in molecules induced by hyperfine interactions", Proc. SPIE 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy, (3 March 1997); https://doi.org/10.1117/12.267735

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