Collisional and radiative processes in high-pressure discharge plasmas

Kurt H. Becker, Peter F. Kurunczi, Karl H. Schoenbach

Research output: Contribution to journalArticle

Abstract

Discharge plasmas at high pressures (up to and exceeding atmospheric pressure), where single collision conditions no longer prevail, provide a fertile environment for the experimental study of collisions and radiative processes dominated by (i) step-wise processes, i.e., the excitation of an already excited atomic/molecular state and by (ii) three-body collisions leading, for instance, to the formation of excimers. The dominance of collisional and radiative processes beyond binary collisions involving ground-state atoms and molecules in such environments allows for many interesting applications of high-pressure plasmas such as high power lasers, opening switches, novel plasma processing applications and sputtering, absorbers and reflectors for electromagnetic waves, remediation of pollutants and waste streams, and excimer lamps and other noncoherent vacuum-ultraviolet light sources. Here recent progress is summarized in the use of hollow cathode discharge devices with hole dimensions in the range 0.1-0.5 mm for the generation of vacuum-ultraviolet light.

Original languageEnglish (US)
Pages (from-to)2399-2404
Number of pages6
JournalPhysics of Plasmas
Volume9
Issue number5
DOIs
StatePublished - May 2002

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plasma jets
collisions
excimers
ultraviolet radiation
vacuum
hollow cathodes
high power lasers
reflectors
luminaires
contaminants
absorbers
atmospheric pressure
electromagnetic radiation
light sources
switches
sputtering
ground state
excitation
atoms
molecules

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Collisional and radiative processes in high-pressure discharge plasmas. / Becker, Kurt H.; Kurunczi, Peter F.; Schoenbach, Karl H.

In: Physics of Plasmas, Vol. 9, No. 5, 05.2002, p. 2399-2404.

Research output: Contribution to journalArticle

Becker, Kurt H. ; Kurunczi, Peter F. ; Schoenbach, Karl H. / Collisional and radiative processes in high-pressure discharge plasmas. In: Physics of Plasmas. 2002 ; Vol. 9, No. 5. pp. 2399-2404.
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