Thermodynamics of positronium thermal desorption from surfaces

S. Chu, A. P. Mills, C. A. Murray

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

A formula equivalent to the Richardson-Dushman equation for thermionic emission is derived for positronium emission from metal surfaces. Data on clean copper surfaces agree with the thermodynamic equation if one takes an effective reflection coefficient of thermal Ps incident on the copper surfaces to be =0.9. For submonolayer converage of sulfur on copper, the positronium emission exceeds the simple thermodynamic limit, and the implications of this result are explored.

Original languageEnglish (US)
Pages (from-to)2060-2064
Number of pages5
JournalPhysical Review B
Volume23
Issue number5
DOIs
StatePublished - 1981
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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