Abstract
Analysis is made of spin lattice relaxation measurements made at low temperature in various BCC samples of solid3He with concentrations of4He of 60 and 82 ppm, at Larmor frequencies of 50 and 200 MHz, and for molar volumes covering the range 23.05⩽V⩽24.82 cm3. From the characteristic features of the relaxation we deduce the mechanisms involved and their relative strengths. We stress the importance of a one-phonon process in relaxing the exchange energy at large molar volume and give an estimate of the bandwidth of the vacancy waves. The combination of the various mechanisms gives a coherent picture of the relaxation at low temperature.
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Bernier, M.E.R. Spin lattice relaxation in BCC3He. J Low Temp Phys 56, 205–217 (1984). https://doi.org/10.1007/BF00681441
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DOI: https://doi.org/10.1007/BF00681441