Hyperfine resonance of deuterium atoms stabilized in impurity-helium solids

We describe a method of combining the stabilization of impurities in super- fluid helium and magnetic resonance techniques to study hyperfine resonance in atomic deuterium, obtained by passing a D-D-2-HE gas mixture through a radiofrequency discharge, The resulting D-D-2-He gas mixture penetrates a s uperfluid helium surface and forms a Van der Waals solid mixture containing atoms of D and Nr! as well as D-2 molecules, In preliminary experiments we have applied magnetic resonance (309 MHz) to the beta-delta transition to study spin-spin and spin-lattice relaxation in atomic deuterium and to prov ide information about the surroundings of atomic deuterium isolated in the D-D-2-He solid.