Search for second-to-first-sound coupling in rotating liquid helium

Journal Article · Tue Nov 27 04:00:00 EST 1973 · J. Phys., C (London), v. 6, no. 23, pp. 3372-3384

DOI:https://doi.org/10.1088/0022-3719/6/23/012· OSTI ID:4355411

Lucas, P

Hall's (J. Phys. C: Solid State Phys.; 3:1166-79 (1970)) predic-tion that first sound will be generated when second sound is m- cident normally on an array of vortex lines in rotating superfluid helium is tested experimentally with a cylindrical resonator rotating on its side. No coupling was detected at any temperature. The measurements indicate that Hall's parameter C' is at least an order of magnitude smaller than the predicted value of 1.8 at 1.34 K. Second sound absorption measurements show that even at the highest rotation speed of 6.2 rad s/sup -1/ the vortex line density is less than the large cavity limit 2 omega / kappa . (auth)

• Research Organization: Univ. of Manchester, Eng.
• NSA Number: NSA-29-017060
• OSTI ID: 4355411
• Journal Information: J. Phys., C (London), v. 6, no. 23, pp. 3372-3384, Journal Name: J. Phys., C (London), v. 6, no. 23, pp. 3372-3384; ISSN JPCPA
• Country of Publication: United Kingdom
• Language: English

Related Subjects

*HELIUM-- WAVE PROPAGATION
CONTAINERS
COUPLING
CYLINDRICAL CONFIGURATION
N66100* --Physics (Low Temperature)--Superfluidity
ROTATION
SECOND SOUND
SOUND WAVES
SUPERFLUIDITY
ULTRALOW TEMPERATURE
VORTEX FLOW