The penetration of superfluid turbulence through porous filters

✍ Scribed by Larry Foreman; Howard Snyder

• Book ID: 104625995
• Publisher: Springer US
• Year: 1979
• Tongue: English
• Weight: 515 KB
• Volume: 34
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00114938

✦ Synopsis

The equilibrium concentration of superfluid turbulence on two sides of smallpore filters is studied as a function of pore size. The filter forms a common wall between two second-sound resonance cavities. The attenuation of standing waves of second sound is used to detect the turbulence which is created in the superfluid with a rotating paddle. We find that superfluid turbulence does not pass through filters of 7.5 nm diameter, but penetrates filters with 50-nm pores.