Spin Polarization of LiquidHe3by Rapid Melting of Polarized Solid

Abstract

In liquid ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ in a Pomeranchuk cell, spin polarizations of 5-20% have been obtained. The method involved production of polarized solid by Pomeranchuk cooling in magnetic fields from 0.03 to 3 T, followed by rapid decompression to a pressure between 2.9 and 0.2 MPa. Relaxation times in the liquid range from 1 to 5 min, increasing with decreasing pressure and with increasing field.