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Thermal expansion of solid methane

Abstract

Relative length changes in solid methane at its approximate vapor pressure have been measured between 4 and 26 K. The linear-expansion coefficient calculated from these data is found to have a maximum at 19.8 K, 0.6 K lower than the peak found in specific-heat measurements. A negative expansion coefficient has been observed below 8 K. The possibility of nuclear spin-species conversion is discussed in terms of the long equilibration times and the observed length changes below 8 K.

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Research supported by National Science Foundation.

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Heberlein, D.C., Adams, E.D. Thermal expansion of solid methane. J Low Temp Phys 3, 115–121 (1970). https://doi.org/10.1007/BF00628321

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Keywords

  • Methane
  • Thermal Expansion
  • Vapor Pressure
  • Magnetic Material
  • Expansion Coefficient