Abstract
Measurements of the nuclear spin lattice relaxation times of3He adsorbed on porous material for a wide range of temperatures (0.33<T<1.5 K) and applied magnetic fields (3.75<H<25 kG) indicate that the relaxation time of the adsorbed atoms is anomalously short with respect to the minimum allowable value for internuclear dipolar interactions, and the observed temperature and field dependence establishes that paramagnetic impurities on the surface do not play a major role in the relaxation process. Comparison with the relaxation rates of129Xe adsorbed on Vycor glass suggests that the relaxation is intimately related to the mobility of the3He adatoms.
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Sullivan, N.S. Anomalous nuclear spin lattice relaxation of3He adsorbed on porous material. J Low Temp Phys 22, 313–323 (1976). https://doi.org/10.1007/BF00654710
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DOI: https://doi.org/10.1007/BF00654710