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Determination of the thickness of a gasket in a diamond anvil high-pressure cell

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Abstract

A method for determining the thickness of a gasket in a diamond anvil high-pressure cell is described. This method is based on measuring the relative position of the anvils. The gasket thickness is determined by measuring the distance between two marks, viz., virtual points “locked” to side surfaces of the anvils. The distance between the marks is determined by digital processing of microphotographs. The error of measuring the gasket thickness disregarding the deformations of the anvils is ∼1 μm. The results of measuring the gasket thickness, the aperture area, and the optical length between the working planes of the anvils for a helium-filled cell are presented. The pressure dependences of the refractive index and the volume of helium, which is compressed to a pressure of 16 GPa, that are calculated using these data are in good agreement with the published data.

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Authors and Affiliations

  1. Institute for High-Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia

    L. N. Dzhavadov & F. S. Elkin

Authors
  1. L. N. Dzhavadov
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  2. F. S. Elkin
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Correspondence to L. N. Dzhavadov.

Additional information

Original Russian Text © L.N. Dzhavadov, F.S. Elkin, 2012, published in Pribory i Tekhnika Eksperimenta, 2012, No. 1, pp. 124–127.

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Dzhavadov, L.N., Elkin, F.S. Determination of the thickness of a gasket in a diamond anvil high-pressure cell. Instrum Exp Tech 55, 116–119 (2012). https://doi.org/10.1134/S0020441211060042

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  • DOI: https://doi.org/10.1134/S0020441211060042

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