The coupling of two nuclear Zeeman reservoirs by the electronic spin-spin reservoir

Abstract

A thermal mixing of the ¹⁹F and ⁷Li Zeeman reservoirs in lithium fluoride containing F centres has been observed at high magnetic fields and low temperatures (g beta H>kt), and its rate measured as a function of NMR frequency and electronic polarization. The mixing, much faster than spin-lattice relaxation, is through the electronic spin-spin reservoir.