Generation of H-, D-ions on Composite Surfaces with Application to Surface/Plasma ion Source Systems

J. R. Hiskes, A. M. Karo, E. Wimmer, Arthur J Freeman, S. R. Chubb

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We review some salient features of the experimental and theoretical data pertaining to hydrogen negative ion generation on minimum work function composite surfaces consisting of Cs/ transition metal substrates. Cesium or hydrogen ion bombardment of a cesium-activated negatively biased electrode exposed to a cesium-hydrogen discharge results in the release of hydrogen negative ions. These ions originate through desorption of hydrogen particles by incident cesium ions, desorption by incident hydrogen ions, and by backscattering of incident hydrogen. Each process is characterized by a specific energy and angular distribution. The calculation of ion formation in the crystal selvage region is discussed for different approximations to the surface potential. An ab initio, all-electron, local density functional model for the composite surface electronics is discussed.

Original languageEnglish
Pages (from-to)670-674
Number of pages5
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume2
Issue number2
DOIs
Publication statusPublished - 1984

Fingerprint

Ion sources
hydrogen ions
Cesium
ion sources
Hydrogen
Ions
cesium ions
Plasmas
composite materials
Composite materials
cesium
negative ions
ions
hydrogen
desorption
Protons
Desorption
Negative ions
Angular distribution
bombardment

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Generation of H-, D-ions on Composite Surfaces with Application to Surface/Plasma ion Source Systems. / Hiskes, J. R.; Karo, A. M.; Wimmer, E.; Freeman, Arthur J; Chubb, S. R.

In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 2, No. 2, 1984, p. 670-674.

Research output: Contribution to journalArticle

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