Study of the nuclear-magnetic-resonance line shape in hcp D2

F. Weinhaus, S. M. Myers, B. Maraviglia, H. Meyer

Research output: Contribution to journalArticle

Abstract

A study of the nuclear-magnetic-resonance (NMR) absorption line shape in solid hcp D2 in the nondiffusive region is presented. The mole fraction C of paramolecules (i. e., those with) a rotational angular momentum J=1) ranged from 0.02 to 0.93, and the temperature was varied between 0.5 and 10 °K. Both continuous-wave (cw) and pulse (free-induction-decay) methods were used to obtain complementing information on the NMR absorption line shape. It is shown that the line shape attributed to J=1 molecules broadens rapidly with decreasing temperature. At low enough temperatures, cw experiments record only the absorption from the J=0 molecules. Second moments M2 were obtained from the analysis of both cw and pulse experiments. Over a restricted range of molé fractions and temperatures, M2 both for the signal from all the molecules and for that from the J=0 molecules alone could be obtained separately from the free induction decay. The extrapolation of M2 to the high-temperature limit where the line shape is determined by random intermolecular nuclear dipole-dipole interactions is in good agreement with theoretical predictions. A discussion is presented of the observed and theoretically expected temperature variation of M2 for both J=1 and J=0 molecules. The results support the calculations by Harris which take account of admixtures of the J=2 excited state in the J=0 ground-state wave function, caused by the interactions with J=1 molecules.

Original languageEnglish
Pages (from-to)3730-3737
Number of pages8
JournalPhysical Review B
Volume3
Issue number11
DOIs
Publication statusPublished - 1971

Fingerprint

resonance lines
line shape
Nuclear magnetic resonance
nuclear magnetic resonance
Molecules
continuous radiation
molecules
Temperature
induction
dipoles
temperature
Angular momentum
decay
Wave functions
pulses
admixtures
Excited states
Extrapolation
Ground state
extrapolation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Weinhaus, F., Myers, S. M., Maraviglia, B., & Meyer, H. (1971). Study of the nuclear-magnetic-resonance line shape in hcp D2. Physical Review B, 3(11), 3730-3737. https://doi.org/10.1103/PhysRevB.3.3730

Study of the nuclear-magnetic-resonance line shape in hcp D2. / Weinhaus, F.; Myers, S. M.; Maraviglia, B.; Meyer, H.

In: Physical Review B, Vol. 3, No. 11, 1971, p. 3730-3737.

Research output: Contribution to journalArticle

Weinhaus, F, Myers, SM, Maraviglia, B & Meyer, H 1971, 'Study of the nuclear-magnetic-resonance line shape in hcp D2', Physical Review B, vol. 3, no. 11, pp. 3730-3737. https://doi.org/10.1103/PhysRevB.3.3730
Weinhaus, F. ; Myers, S. M. ; Maraviglia, B. ; Meyer, H. / Study of the nuclear-magnetic-resonance line shape in hcp D2. In: Physical Review B. 1971 ; Vol. 3, No. 11. pp. 3730-3737.
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