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Relaxation time of an adsorbing ^4He film

Sinvani, M. and Goodstein, D. (1983) Relaxation time of an adsorbing ^4He film. Surface Science, 125 (1). pp. 291-297. ISSN 0039-6028. https://resolver.caltech.edu/CaltechAUTHORS:20151214-123256868

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Abstract

The readsorption of ^4He atoms on a constantan heater surface was studied after flash desorption by the heat pulse technique. The replenishment of the desorbed film after the heat pulse was found to be essentially linear with the time between the pulses, reaching saturation at some critical value, t_(rc), which strongly depended on the pressure in the vapor, P_g. With the help of kinetic theory for the flux of atoms striking a surface, the measured value of t_(rc) could be calibrated to give P_g. We have verified this formula directly and used it to measure pressures down to 10^(−9) Torr.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1016/0039-6028(83)90465-XDOIArticle
http://www.sciencedirect.com/science/article/pii/003960288390465XPublisherArticle
Additional Information:© 1983 Published by Elsevier B.V. Received 1 June 1982; accepted for publication 27 June 1982. This work was supported by ONR Contract Number N0014-80-C-0447. We are happy to acknowledge discussions with Dr. Peter Taborek, who first suggested that pressures might be measured by means of t,c, and with Dr. Milton Cole. This work was supported by ONR Contract Number N0014-80-C-0447. One of us (M.S.) wishes to acknowledge the support of a Bantrell Fellowship.
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Funding AgencyGrant Number
Office of Naval Research (ONR)N0014-80-C-0447
Bantrell FellowshipUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20151214-123256868
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151214-123256868
Official Citation:M. Sinvani, D. Goodstein, Relaxation time of an adsorbing 4He film, Surface Science, Volume 125, Issue 1, 1 February 1983, Pages 291-297, ISSN 0039-6028, http://dx.doi.org/10.1016/0039-6028(83)90465-X. (http://www.sciencedirect.com/science/article/pii/003960288390465X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62880
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2015 21:25
Last Modified:03 Oct 2019 09:23

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