Generation and detection of quantum turbulence in Superfluid He-3-B

Citation
Sn. Fisher et al., Generation and detection of quantum turbulence in Superfluid He-3-B, PHYS REV L, 86(2), 2001, pp. 244-247
Citations number
9
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
2
Year of publication
2001
Pages
244 - 247
Database
ISI
SICI code
0031-9007(20010108)86:2<244:GADOQT>2.0.ZU;2-W
Abstract
We describe the first direct observations of turbulence in super-fluid He-3 -B. The turbulence is generated by a vibrating-wire resonator driven at vel ocities exceeding the pair-breaking critical velocity. It is detected by th e resulting decrease in the thermal damping on a neighboring "detector" vib rating-wire resonator. The superfluid flow field associated with the turbul ence Andreev reflects thermal quasiparticle excitations, effectively screen ing the detector wire, resulting in a decrease in the thermal damping.