Counterflow in superfluid 3He-4He mixtures: Part III: Turbulent flow at fixed temperature differences

✍ Scribed by R.F. Mudde; H. van Beelen

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 489 KB
• Volume: 179
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(92)90623-z

✦ Synopsis

Surveys of data on turbulent thermal counterHow in superfluid 'He-'He mixtures of molar concentrations X = 4.6%, 7.2% and 11 .(I% have been collected for the temperature range between 1.30 and 1.70 K. The non-steady character of thermal counterflow in mixtures, caused by the drag on the 'He particles by the normal fraction of the 'He component, has been exploited

to carry out measuring runs that cover an extensive range of counterflow velocities.

The vortex line densities deduced from the data were found to depend hardly on the 'He concentration.