Accession Number : AD0725855

Title :   Magnetic Field Dependence of Spin-Lattice Relaxation Rates Between the Triplet State Zeeman Levels of Pyrazine-d4 at 1.6K.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY

Personal Author(s) : Hall,Lawrence H. ; El-Sayed,M. A.

Report Date : MAR 1971

Pagination or Media Count : 13

Abstract : The mechanism by which the rate of dissipation of the magnetic energy of the triplet state is accelerated by the application of magnetic field is examined, both experimentally and theoretically. It is found that the rate is proportional to the square of the magnetic field. This is in agreement with a mechanism involving the increase in energy spacing between the magnetic levels, thus requiring phonons with higher frequency. Since the phonon density is proportional to the square of the phonon frequency, the observed dependence is explained. (Author)

Descriptors :   (*MOLECULAR ENERGY LEVELS, MAGNETIC FIELDS), RELAXATION TIME, NITROGEN HETEROCYCLIC COMPOUNDS, PHONONS, DEUTERIUM COMPOUNDS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE