Effect of 3 He on Third Sound Attenuation in Thick 4 He Films
نویسندگان
چکیده
We have performed measurements of third sound attenuation in thick films of superfluid He in the presence of small amounts of He. The attenuation due to He appears to depend linearly on the number density of He atoms in the film. We discuss the results in context of a recently proposed mechanism where the attenuation is caused by the interaction of the excitations in helium with the trapped vortices.
منابع مشابه
Measurements of Attenuation of Third Sound: Evidence of Trapped Vorticity in Thick Films of Superfluid
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