Relaxation studies

Publisher Website
Google Scholar
Abstract
The importance of a relaxation mechanism involving the modulation of the isotropic hyperfine interaction tensor by phonon mechanisms is discussed on the basis of a previous theory [1]. The hyperfine interaction energy for the molecule is obtained from both molecular orbital and valence bond calculations. The line-widths arising from conventional mechanisms are calculated and it is found that in solution the dominant mechanism is due to a spin-rotation interaction but the vibrational modulation of the isotropic hyperfine interaction gives a contribution comparable with that due to the g and hyperfine tensor anisotropies. The calculations also enable one to predict the temperature dependence of the isotropic hyperfine interaction: a negligible increase of about 2 m gauss deg-1 at 300°k is expected.

This publication has 20 references indexed in Scilit: