Abstract
We present new measurements of the temperature derivative of the pressure along the superfluid transition line in4He near saturated vapor pressure. These results indicate that the second derivative (∂2P/∂P∂T)λ is finite at saturated vapor pressure. The data agree with earlier measurements by Kierstead.
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References
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Ahlers, G. Temperature derivative of the pressure of4He at the superfluid transition. J Low Temp Phys 7, 361–365 (1972). https://doi.org/10.1007/BF00660073
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DOI: https://doi.org/10.1007/BF00660073