Abstract
The hyperfine lines in the electron resonance spectra of radicals in solution can show marked variations in width, and each line may itself be a sum of Lorentzian components with different relaxation times. In radicals of spin ½, where the anisotropy of the
g
tensor and the nuclear hyperfine tensors is the dominant cause of relaxation, a theory is given for finding a certain
average width
of each composite hyperfine line in terms of the inner products of the tensors. The width varies both linearly and quadratically with nuclear spin quantum numbers in a way which agrees qualitatively with previous work by Kivelson. Spectra of several aromatic radicals agree with the theory. The calculations use operator methods based on Bloch’s master equation for the spins. In the simpler problem of relaxation by dipolar electron spin-spin coupling in triplet, quartet, or higher spin states the operator method gives a complete description of the composite line shapes.
Reference38 articles.
1. A bragam A. 1961 Theprinciples of nuclear magnetism. Oxford U niversity Press.
2. J;Phys. Soc. Japan,1954
3. Dynamical Theory of Nuclear Induction. II
4. P hys;Bloch F .;Rev.,1957
5. Relaxation Effects in Nuclear Magnetic Resonance Absorption
Cited by
222 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献