DYNAMIC NUCLEAR-POLARIZATION OF LIQUID-HE-3

At Kazan State University a number of experiments have been proposed u sing solid paramagnetic compounds to produce nuclear polarization in l iquid helium-three, for which the nuclear resonance frequency is f(n)= 32.4 MHz T-1. This note suggests the application of magnetic resonance in antiferromagnetic compounds to this problem. In addition to a rang e of 3d ions, two compounds of lanthanide ions which become antiferrom agnetic at liquid helium temperatures are discussed. Also, electron pa ramagnetic resonance is proposed using trivalent erbium ions at low ab undance in metallic silver.