Spin Interferometry and Phase Relations in Three Level Systems

摘要

The sign of the wavefunctions of deuterium, a spin-1 nucleus, under a 2 pi rotation (spinor character) has been studied with using a single crystal of 98% deuterated hexamethyl-benzene (HMB, C sub 6 (CD sub 3 ) sub 6 ). In a large magnetic fields, the three energy levels of the Zeeman hamiltonian have equal spacing, whereas unequivalent transition frequencies may occur if a suitable quadrupolar interaction is included. Three types of experiment are discussed. Simultaneous irradiation of both transitions with a field strength omega sub 1 in the x direction verified spin-locking, quadrature, or phase variation; consecutive irradiation at both transition with pi -pulses showed coherence transfer from transition 1-2 to the forbidden transition 1-3; double quantum spinor behavior was demonstrated by applying rf field of strength omega sub 1 = gamma H sub 1 at the 'double quantum transition' frequency omega sub 0 . (Atomindex citation 10:472127)