Low Temperature Physics: 29, 492 (2003); https://doi.org/10.1063/1.1542535 (3 pages)
Физика Низких Температур: Том 29, Выпуск 6 (Июнь 2003), c. 663-666    ( к оглавлению , назад )

Manipulation of solid-liquid interface of 4He by acoustic radiation pressure

R. Nomura, Y. Suzuki, S. Kimura, Y. Okuda, and S. Burmistrov*

Department of Condensed Matter Physics, Tokyo Institute of Technology 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551, Japan
E-mail: nomura@ap.titech.ac.jp

Received December 19, 2002

Аннотация

Acoustic radiation pressure is thought to be very useful for solid 4He experiment under the microgravity. We observed that solid-liquid interface of 4He was manipulated by the acoustic wave. We applied the sound pulse perpendicularly to the flat interface between two transducers. The interface moved to the sound direction at low temperatures. We also checked how the interface moved when sound was applied parallel to the interface. Dynamics of the interface during and after the sound pulse were recorded by a high speed CCD camera.

PACS:
67.80.-s - Solid helium and related quantum crystals
81.10.-h - Methods of crystal growth; physics of crystal growth (for crystal structure, see section 61)
43.35.+d - Ultrasonics, quantum acoustics, and physical effects of sound