On the Theory of Cross Relaxation in Maser Materials II. Harmonic Spin Coupling
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The harmonic cross relaxation mainly due to the interaction of neighboring three spins has been studied under the moment method in succession to the previous paper. It is shown that in the absence of exchange interaction the shape functions of the relaxation are nearly Gaussian the frequency widths of which are much greater than those of magnetic resonance absorption. The rate of relaxation is calculated in cases of S=1, and 3/2. The observed cross relaxation times in ruby are compared with the theoretical values given by an approximate method. It is shown that the experimental results are at least numerically interpreted by the flipping of spins due to the dipole-dipole interaction between ions except for those estimated to be closely coupled by exchange interaction.
- 社団法人日本物理学会の論文
- 1962-05-05
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- On the Theory of Cross Relaxation in Maser Materials II. Harmonic Spin Coupling
- On the Theory of Cross Relaxation in Maser Materials