Deuteron NMR in solid D-T

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.695· OSTI ID:7070326

Collins, G W; Fearon, E M; Mapoles, E R; Tsugawa, R T; Souers, P C ^[1]; Fedders, P A ^[2]

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1. Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States)
2. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)

The longitudinal relaxation times {ital T}{sub 1} of the deuteron in solid deuterium-tritium (D-T) were measured from 2.5 to 5.0 K. They are shown to obey the Moriya-Motizuki equation, which means that relaxation takes place through the entirety of the {ital J}=1 D{sub 2} line. The total {ital J}=1 D{sub 2} plus {ital J}=1 T{sub 2} concentrations varied from 26% to 0.75%. The D-T relaxation times were shown to be independent of the NMR frequency. The inherent relaxation times {ital T}{sub 11} of the D-T were in agreement with those of the deuteron in solid D{sub 2}. It was shown that the deuteron {ital T}{sub 11} values could be derived from those of the proton by adjusting the {ital d} term of the Hamiltonian. In contrast, the deuteron data for HD in the literature does not obey the Moriya-Motizuki equation, and the derived {ital T}{sub 11} values are much larger than those of D{sub 2} and D-T. It was postulated that electric-field gradients from molecular size mismatches in the crystal cause restricted spin diffusion and a diffusion coefficient on the order of 10{sup {minus}17} m{sup 2}/s was calculated.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7070326
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:2; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
CHARGED PARTICLES
DEUTERIUM COMPOUNDS
DEUTERIUM TRITIDE
DEUTERONS
HYDROGEN COMPOUNDS
NMR SPECTRA
RELAXATION TIME
SPECTRA
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRITIDES
TRITIUM COMPOUNDS