Affiliation:
1. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
Abstract
The particular molecule discussed in some detail herein is the methyl radical, CH3, with emphasis on its potential extraterrestrial appearance. In earlier papers, including group-theoretical analysis, it was shown that the isotropic EPR spectra of free radical (S = 1/2) species XLn, where the n equivalent nuclei also have spin 1/2, have a more complicated form than disclosed by the usual (first-order) oversimplified analysis. In the present work, we focus on the magnetic resonance of such systems at or near zero external magnetic field, and on the spectra obtained both by perpendicular [Formula: see text] and parallel-field [Formula: see text] excitation. This work summarizes what is known about the spin-flip transitions of CH3, and predicts what likely will be observed (0–200 MHz, under various field and scan conditions), for the future use by astrophysicists.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
3 articles.
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