The4He viscosity near the superfluid transition under pressure

✍ Scribed by L. Bruschi; M. Santini

• Publisher: Springer US
• Year: 1978
• Tongue: English
• Weight: 412 KB
• Volume: 33
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00115005

✦ Synopsis

Measurements performed on liquid 4He at five different pressures near the lambda line indicate that the viscosity ~ is singular at the transition. A description in terms of a confluent singularity gives an exponent with equal values at different pressures and on both sides of the superfluid transition. The measurements have been performed in the temperature range lO-S <

[1 -T/T~] < 10 -2 and for pressures up to 25 atm.