NMR relaxation rate and the libron energy of solid hydrogen

Kazushi Sugawara, John A. Woollam

Research output: Contribution to journalArticlepeer-review


Taking the rotational relaxation of orthohydrogen (o-H2) in solid hydrogen into account, we have theoretically investigated the longitudinal NMR spin lattice relaxation rate T1-1 of o-H2. The rate T1-1 is characterized by an anomalous maximum, as a function of temperature, at temperatures close to the mean libron energy of o-H2. Application of the theory for o-H2 concentrations between 42% and 75% reveals a nearly concentration-independent mean libron energy equivalent to about 1 K. This qualitatively and quantitatively contradicts the conclusions of other theories, but agrees with recent experiments.

Original languageEnglish (US)
Pages (from-to)1246-1250
Number of pages5
JournalThe Journal of Chemical Physics
Issue number3
StatePublished - 1978
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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