We have polarized the J = 0, I = 2 spins in solid D2 in 14.5 T to 13 %
. We condensed D2 in the form of small particles in a Pomeranchuk cell
attached to a large dilution refrigerator. In this way we could cool
the spins to 35 mK The polarization was measured using cw NMR and a re
laxation time at 35 mK of 360 sec was obtained in a hole burning exper
iment.