Relaxation time of an adsorbing 4He film

M. Sinvani, D. Goodstein

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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, trc, which strongly depended on the pressure in the vapor, Pg. With the help of kinetic theory for the flux of atoms striking a surface, the measured value of trc could be calibrated to give Pg. We have verified this formula directly and used it to measure pressures down to 10-9 Torr.

Original languageEnglish
Pages (from-to)291-297
Number of pages7
JournalSurface Science
Volume125
Issue number1
DOIs
StatePublished - 1 Feb 1983
Externally publishedYes

Bibliographical note

Funding Information:
* This work was supported ** BantreII Fellow.

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