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Die wandbestimmte Vernichtung angeregter Teilchen in Plasmen

Decay of excited plasma components at the wall

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Zeitschrift für Physik B Condensed Matter

Abstract

Time resolved optical absorption measurements on low pressure afterglow plasmas show that metastable atoms are reflected by the wall ten to hundred times. This high rate of reflection changes drastically the pressure dependence of the decay frequencies in the diffusion range. No microscopic diffusion theory exists taking in account this effect.

Starting from the Boltzmann equation we developed such a diffusion theory. The microscopic boundary condition was described by a model of the transport to the wall and of the plasma-wall interaction. From the solution of the Boltzmann equation we derived a macroscopic boundary condition which gives the diffusion current as a fraction of the thermal current. Up to now this fraction was found by semiempirical considerations only.

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Authors and Affiliations

  1. Fachbereich 6 — Fach Physik, Universität Essen — Gesamthochschule, Postfach 6843, D-4300, Essen 1, Bundesrepublik Deutschland

    Wolfgang Lenoir & Karl Gerhard Müller

Authors
  1. Wolfgang Lenoir
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  2. Karl Gerhard Müller
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Lenoir, W., Müller, K.G. Die wandbestimmte Vernichtung angeregter Teilchen in Plasmen. Z Physik B 20, 201–206 (1975). https://doi.org/10.1007/BF01315691

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  • DOI: https://doi.org/10.1007/BF01315691

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