We have extended a recent theory of spin relaxation in gases due to static magnetic field inhomogeneities to include the effects of oscillating magnetic fields. We use this theory to show how magnetic field inhomogeneities cause spin relaxation under magnetic resonance conditions. We have confirmed some of the main theoretical predictions by experimental observations. Spin relaxation in inhomogeneous magnetic fields can be used as a convenient new way to measure diffusion constants in gases.

• Received 27 June 1988

DOI:https://doi.org/10.1103/PhysRevA.38.5092