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Precise measurement of zero sound velocity in normal 3He

✍ Scribed by K. Matsumoto; T. Ikegami; S. Ito; M. Kirigaya; Y. Okuda


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
197 KB
Volume
219-220
Category
Article
ISSN
0921-4526

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We are studying the quantum limit of zero sound absorption in normal 3He in which sound quanta are absorbed or emitted directly by quasiparticles. For that experiment, high frequency ultrasound is required since the condition hto > K T must be satisfied. We have succeeded in observing zero sound at