Theory of Solid Hydrogen Mixture.I.Distribution of Local Order Parameters,NMR Line Shapes and Relaxation Times

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概要

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• The ortho-para mixture of solid H. is studied theoretically for fcc lattices of finitesize, assuming EQQ interaction. The excitation spectrum is calculated by using theHartree ground-state obtained numerically. The lowest excitation energy decreaseswith decrease of ortho concentration X, and vanishes at X - 0.55 . The distribution ofthe local order parameters (LOP) is obtained in comparison with NMR line shape. lm-portance of the quantum effect is pointed out for the distribution of LOP whichbroadens rapidly with decrease of X. The relaxation time T. is also studied as a func-tion of NMR frequency shift, manifesting that ortho-H. with smaller value of orderparameter relaxes more rapidly in the quadrupolar glass region.

• 社団法人日本物理学会の論文
• 1986-10-15

著者

• Mishima Akira

  Faculty Of Engineering Science Osaka University

• Miyagi Hiroshi

  Faculty Of Engineering Science Osaka University

関連論文

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• Spin Correlation Effect on the Slow Neutron Scattering by Polyatomic Molecules with Particular Reference to Methane

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