Abstract
Orthodeuterium of unprecedented purity concentration has been produced, with spin-lattice relaxation time h at K and T. This suffices for retention of high spin polarization built up at millikelvin temperatures and use at 1-4 K as a highly spin-polarized solid. from 1 to 10 K and 0.01 to 0.70 T are compared with and , allowing tests of current relaxation theories. Measurement of the homogeneous conversion rate in at 4.2 K for is found to be substantially in agreement with a previous determination for .
- Received 31 January 1986
DOI:https://doi.org/10.1103/PhysRevLett.56.1866
©1986 American Physical Society