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Direct detection of neutral atoms photodesorbed from monolayers and multilayers of rare gases on a metal surface by excitonic and ionic primary processes

  • Technical University of Munich

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Neutral atoms photodesorbed by monochromatic synchrotron radiation between 7 and 30 eV from monolayers and multilayers of Ar and Kr on Ru(001) have been detected by positionization and lock-in mass spectrometry. From multilayers, primary processes leading to desorption are surface and bulk excitons of various orders, ionic excitations, and two-step processes (photoelectron-induced excitons). Ar monolayers show surface excitons besides ionic excitations. The acting mechanisms are briefly discussed.

Original languageEnglish
Pages (from-to)791-794
Number of pages4
JournalPhysical Review Letters
Volume59
Issue number7
DOIs
StatePublished - 1987

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