Dielectric coefficient and density of subcooled liquid hydrogen.

Author(s) : CHARIGNON T., CELIK D., HEMMATI A., et al.

Type of article: Article


The authors present precision dielectric coefficient measurements of subcooled equilibrium liquid hydrogen in the temperature range from 15 to 23 K and under pressures up to 1 MPa. The measurements were performed using a three-terminal flat plate capacitor and a single-frequency, ultra-precision capacitance bridge. These results are combined with the previously published data to express the dielectric coefficient in the form of the Clausius-Mossotti relation with a new correlation. The results reported in this paper are expected to be especially useful for capacitance-based measurements involving fluid hydrogen such as liquid level, mass gauging and void fraction measurements in two phase flow. Also, a new equation of state gives the density as a function of pressure and temperature for the subcooled liquid phase. [Reprinted with permission from Elsevier. Copyright, 2007].


  • Original title: Dielectric coefficient and density of subcooled liquid hydrogen.
  • Record ID : 2007-1821
  • Languages: English
  • Source: Cryogenics - vol. 47 - n. 4
  • Publication date: 2007/04


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