Abstract
The supersaturated superfluid3He-4He mixture in the presence of quantized vortices is considered. A specific type of the lability against the vortex core expansion arises from concentrating3He atoms onto the vortex core. This affects significantly the region of the3He concentrations at which the rate of nucleating stable3He-concentrated phase can be noticeable. The most clear case of the vortex structure is a straight-line vortex with the uniformly distributed 3He atoms along the core. Such lability leads to some features in the thermal activation and quantum tunneling nucleation, resulting, in particular, in a relatively small supersaturation of about 1% which can be achieved. The critical value of the supersaturations corresponding to the vortex lability is dispersed because of the finite size of the3He-concentrated phase along the vortex core. We analyze this dispersion and its effect on the quantum separation in supersaturated3He-4He mixtures. The value of the supersaturation conserves its order of the magnitude, changing only by a numerical factor. We also emphasize an important difference of the coefficient in the term responsible for the lability from the superfluid density ρs. The supersaturation observed in experiments lies within the range of the vortex lability and, probably, is connected with this lability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
