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Adsorption of 4He on Bare and on Argon-Coated Exfoliated Graphite at Low Temperatures

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Low Temperature Physics-LT 13

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Abstract

Measurements have been made of adsorption isotherms of 4He on bare, exfoliated graphite (Grafoil†1) and on the same substrate coated with a completed monolayer of argon. The isotherms were measured at 4.2, 6.18, 7.90, 9.65, 11.60, 13.50, 15.08, and 18.55°K in the pressure range 0.25–25 Torr using an apparatus which has been described previously. Thermomolecular pressure corrections were less than 3% even at the lowest temperatures and the accuracy of pressure measurement was within 0.5%. Details of the method of temperature and pressure measurement and of the corrections used in the calculations of the mass adsorbed have been given previously.2 3

Supported by contracts with the Office of Naval Research and Department of Defense (Themis Program) and by a grant from The National Science Foundation.

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Authors and Affiliations

  1. Cryogenics Center, Stevens Institute of Technology, Hoboken, New Jersey, USA

    E. Lerner & J. G. Daunt

Authors
  1. E. Lerner
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  2. J. G. Daunt
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Editor information

Editors and Affiliations

  1. University of Colorado, Boulder, Colorado, USA

    K. D. Timmerhaus  & W. J. O’Sullivan  & 

  2. National Science Foundation, Washington, D.C., USA

    K. D. Timmerhaus

  3. Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico, USA

    E. F. Hammel

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© 1974 Springer Science+Business Media New York

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Lerner, E., Daunt, J.G. (1974). Adsorption of 4He on Bare and on Argon-Coated Exfoliated Graphite at Low Temperatures. In: Timmerhaus, K.D., O’Sullivan, W.J., Hammel, E.F. (eds) Low Temperature Physics-LT 13. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7864-8_35

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  • DOI: https://doi.org/10.1007/978-1-4684-7864-8_35

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-7866-2

  • Online ISBN: 978-1-4684-7864-8

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