We suggest a CW NMR experiment to observe the spin waves in 3He-4He dilute solutions or pure liquid 3He. Spin waves in He solutions should be detectable at a temperature of about 20mK and an external field of about 20 kG.
Bibliographical noteFunding Information:
* Supported in part by the U.S. Atomic Energy Com-mission under Contract No. AT(11-1)-1569. ** Spin waves have been observed in metals, see ref. \[5\].
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