Multiple quantum phase slips in superfluid {sup 4}He

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00753397· OSTI ID:183453

Varoquaux, E; Bernard, M ^[1]; Avenel, O; Burkhart, S ^[2]

---

1. Universite Paris-Sud, Orsay (France)
2. CEA-DRECAM, Gif-sur-Yvette (France)

Phase slips by 2{pi} in the critical flow of superfluid {sup 4}He through an orifice have been known to exist for some time. Besides these small, regular events, large and precipitous drops of the velocity which may cause up to a full collapse of the flow through the orifice have been observed by a number of authors. We have found that collapses are robust and repeatable features during the same cool-down and correspond to events involving n quantized vortices. They depend on temperature, pressure, {sup 3}He content and resonator drive level. At a given pressure, their appearance is governed solely by the magnitude of the superfluid velocity v{sub s}.

• Sponsoring Organization: USDOE
• OSTI ID: 183453
• Report Number(s): CONF-950676--
• Journal Information: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 101; ISSN 0022-2291; ISSN JLTPAC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CRITICAL FLOW
HELIUM 4
ORIFICES
PHASE SHIFT
SLIP
SUPERFLUIDITY
TEMPERATURE DEPENDENCE