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LATTICE PARAMETERS, THERMAL EXPANSION COEFFICIENTS AND DENSITY OF VACANCIES IN SOLID METHANE.

[In Russian. / En russe.]

Author(s) : PROHVATILOV A. I., ISAKINA A. P.

Type of article: Article

Summary

THE LATTICE PARAMETERS AND THERMAL EXPANSION ARE X-RAY INVESTIGATED ON POLYCRYSTALLINE METHANE. USING THE OBTAINED THERMAL EXPANSION COEFFICIENTS, HEAT CAPACITIES AND GRUNEISEN CONSTANTS ARE CALCULATED. THE CONTRIBUTIONS TO HEAT CAPACITY OF TRANSLATIONAL AND ROTATIONAL MOTION OF MOLECULES ARE ANALYSED. THE DENSITY, VOLUME AND ENTHALPY OF THE EQUILIBRIUM VACANCY FORMATION ARE FOUND THROUGH A COMPARISON OF X-RAY AND DILATOMETRIC THERMAL EXPANSION COEFFICIENTS IN THE VICINITY OF MELTING TEMPERATURES OF CH4. THE CHARACTERISTICS OBTAINED ARE CLOSE TO THE VALUES OBSERVED FOR MONOVACANCIES IN INERT GAS CRYSTALS.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1984-0438
  • Languages: Russian
  • Source: Fiz. nizk. Temp. - vol. 9 - n. 4
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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