Orientation Dependence of Magnetic Hyperfine Structure in Free Radicals
摘要：
The anisotropic part (Bterm) of the spin Hamiltonian for a free radical is averaged to zero when there is rapid molecular tumbling. Otherwise, it combines with the isotropic part (Aterm) to produce orientation‐dependent hyperfine splittings in ESR spectra. In the high‐field case, the electron is strongly coupled to the external field. The nucleus, however, is effectively coupled to the electron's tensor field. Consequently, the two spins have, in general, different axes of quantization. Applying first‐order perturbation theory, expressions are derived for the orientation dependence of the resonance in a single crystal and for the line shape in a powder.
展开
关键词：
Electron paramagnetic resonance spectroscopy External field Hyperfine structure Magnetic anisotropy Molecular hyperfine structure
DOI：
10.1063/1.1731252
被引量：
年份：
1960
相似文献
参考文献
引证文献
引用走势
站内活动
辅助模式
引用
文献可以批量引用啦~
欢迎点我试用！
