On the Tunneling Resonance of Methyl-Protons at Low Temperature
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概要
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In order to calculate the spin-lattice relaxation time T3 of protons of CH.-group at low temperature, a model of relaxation which is available who;?t ')tH.r.>>1has been proposed, where H5 is the local dipolar field autd r. is the t;orrelatiouttime. Present calculation of Tg is closely related to that of the absorption spectraof protoua spins in which the non-secular part of the dipolar interaction is i?a-cluded. It is shown that the spin-lattice relaxation is caused by the taova-magneticOrbach process between the grouuad and first exited torsional stata:s. Presentmodel predicts that when the tuzaneling resonance occurs, T. is given by T. zr.,which is different from the result of the second-order calculation and the Haupttheory. The absorption spectra at the tunneling resonance has also beencalculated. The measurement of T. and absorption spectra at the tuntaelingresonance is useful to determiaae the precise value of the tunneling spljttingL
- 社団法人日本物理学会の論文
- 1980-08-15
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