Deuteron spin-lattice relaxation of a tunnelling tetrahedral four spin I=1 system

D. van der Putten and N.J. Trappeniers

Physica A: Statistical Mechanics and its Applications, 1985, vol. 129, issue 2, 302-326

Abstract: In order to obtain an expression for the deuteron spin-lattice relaxation time of tetrahedra such as CD4 or ND4, which exhibit tunnel splittings large compared to the Zeeman energy, the quadrupolar matrix elements are calculated employing group theoretical methods. The coupling between Zeeman and tunnel system is ignored, leading to a description of the populations of the orientational energy levels by a common spin temperature. It is found that the absolute values of T1 are much larger than in the classical case. The theoretical expressions are compared with experimental values of CD4.

Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:129:y:1985:i:2:p:302-326

DOI: 10.1016/0378-4371(85)90170-0

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