Superfluidity

Lab instructions

• Experiment outline for studying superfluidity in ⁴He
• Second sound notes

Supplementary material

• Low Temperature System for Second Sound
• Cooldown procedure for second-sound resonator
• R.J. Donnelly, The Two-Fluid Theory and Second Sound in Helium, Physics Today 62, 34 (2009)
• Liquid Helium
• R.J. Donnelly, The Discovery of Superfluidity, Physics Today 48 (30), 1995.
• Acoustics of the cylindrical resonator
• Second Sound in He II
• superfluid phase data
  
• About Lock-in Amplifiers
• Cernox resistor calibration report data plot
• Cernox resistor calibration data file
  
• Mathcad program notes