Abstract
Continuous-wave NMR measurements were performed for liquid 3He in porous alumina discs, which have many small pores of 200 nm in nominal diameter regularly aligned in the same direction. The experimental cell is composed of a stack of 85 anopore discs with C-shaped disc spacers between them. The spacers make the sample space well defined and make it easier to discriminate between liquid NMR signals from different spaces. To eliminate solid 3He layer adsorbed on the alumina's surface, 4 atomic layers of 4He were pre-coated on the surface in the experimental cell. Experiments were made at pressure of 17.9 bar and temperatures down to about 0.5 mK. The obtained NMR signals are composed of two contributions below superfluid transition temperatures. One seems to come from the liquid inside pores and the other between each anopore discs.
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