Dynamic characteristics of helium adsorbents. Influence of the heat removal conditions

The static and dynamic characteristics of the adsorbent SKN-1K at 4.2 K are investigated under conditions corresponding to the working conditions of adsorption pumps in dilution refrigerators. It is shown that gluing this adsorbent to the cooled surface leads to a substantial lowering of the pressur...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2008-06, Vol.34 (6), p.481-483
Main Authors: Shcherbachenko, R. I., Grigor’ev, V. N.
Format: Article
Language:English
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Summary:The static and dynamic characteristics of the adsorbent SKN-1K at 4.2 K are investigated under conditions corresponding to the working conditions of adsorption pumps in dilution refrigerators. It is shown that gluing this adsorbent to the cooled surface leads to a substantial lowering of the pressure in the pump in the dynamic regime. On the basis of experimental data for the glued and free adsorbent an estimate is made of the hydrodynamic contribution to the pressure due to the resistance of the pores of the adsorbent. This estimate falls within the error of measurement.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.2920182