Transmission of high-frequency phonons through a solid-liquid-helium interface

Journal Article · Mon Sep 10 04:00:00 EDT 1973 · Phys. Rev. Lett., v. 31, no. 11, pp. 693-696

DOI:https://doi.org/10.1103/PhysRevLett.31.693· OSTI ID:4316586

Swanenburg, T J.B.; Wolter, J

S>Heat-pulse experiments at 1.3 K show that the conversion of ballistic high-frequency phonons in a solid into second sound in supefluid helium can be used to study the transmission coeffidient of the phonons through the interface. The transmission coeffidients for longitudinal and transverse phonons in silicon are found to be equal for heater temperatures between 10 and 20 K. (auth) We have produced and observed quantized vortex rings emitted from orifices when superfluid helium is forced through channels at critical velocity. The vortices are identified by measuring their velocity and size, and are found to be in the n= 1 quantum state. (auth)

• Research Organization: Philips Research Laboratories, Eindhoven, Netherlands
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-022712
• OSTI ID: 4316586
• Journal Information: Phys. Rev. Lett., v. 31, no. 11, pp. 693-696, Journal Name: Phys. Rev. Lett., v. 31, no. 11, pp. 693-696; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

*HELIUM II-- PHONONS
HEATING
INTERFACES
N66100* --Physics (Low Temperature)--Superfluidity
REFLECTION
TRANSMISSION