Quantum exchange effects, predicted to occur in the spin diffusion of polarized nondegenerate gases, have been observed in a 3 He-4 He mixture by spin-echo techniques. Measurements of the spin rotation parameter (/iMo) 2 and diffusion constant D are in reasonable agreement with theoretical predictions until the degeneracy temperature is approached.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.