Vector and tensor polarization lifetimes for a stored deuteron beam

Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1120, USA~Received 8 May 2003; published 2 October 2003!The time dependence of the vector and tensor polarization of a 270 MeV stored deuteron beam wasmeasured near a depolarizing resonance, which was induced by an oscillating, longitudinal magnetic field. Thedistance to the resonance was varied by changing the oscillation frequency. The measured ratio of the polar-ization lifetimes is t