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Prog. Theor. Phys. Vol. 44 No. 2 (1970) pp. 303-327

[ Full Text PDF : FREE ACCESS (1456K) ]

Fourth Moment Correction to the Spectral Density Responsible for the Longitudinal Nuclear Relaxation in Solid H2

Juichiro Hama and Tuto Nakamura

Faculty of Engineering Science, Osaka University, Toyonaka

(Received March 25, 1970)

Abstract:

The spectral density responsible for the longitudinal nuclear relaxation time, T1, in solid H2 is studied at the high temperature limit of the rigid lattice, by taking the fourth moment into account. The relevant moments are evaluated simply by a systematic procedure based on the algebra of tensors, assuming the orientation dependent energy to be exclusively the electric quadrupole-quadrupole interaction. At high o-H2 concentration, the high temperature limit of T1 predicted by the present study is shorter than that by Gaussian approximation by about 10%, in agreement with the recent measurement by Amstutz et al., if one chooses the coupling constant of the quadrupole-quadrupole interaction to be consistent with other kinds of measurements.


URL : http://ptp.ipap.jp/link?PTP/44/303/
DOI : 10.1143/PTP.44.303

[ Full Text PDF : FREE ACCESS (1456K) ] Citation:

References:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 44 No. 4 (1970) pp. 833-859 :
    Quantum Theory of Raman Scattering in Solid Ortho-Hydrogen and Para-Deuterium. I
    Tuto Nakamura and Hiroshi Miyagi
  2. Progress of Theoretical Physics Vol. 48 No. 6 (1972) pp. 1769-1792 :
    Spectral-Density Function in the System of Randomly Distributed Spins with R-n Interactions
    Juichiro Hama, Teruo Inuzuka and Tuto Nakamura
  3. Progress of Theoretical Physics Vol. 54 No. 2 (1975) pp. 293-307 :
    Nuclear Magnetic Relaxation in Solid Hydrogens with Dilute Ortho-H2
    Motoya Fujio, Juichiro Hama and Tuto Nakamura

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