Bragg scattering measurement of atmospheric plasma decay

Y. S. Zhang, S. P. Kuo

Research output: Contribution to journalArticlepeer-review

Abstract

The decay processes of the plasma layers generated by two intersecting microwave pulses in 1 torr dry air are investigated by Bragg scattering method. The results of measurement show that the electrons decay initially at the three-body attachment rate. However, when enough negative molecule ions are produced through the electron attachment process, the regeneration of electrons via detachment process is increased and eventually balances out the electron attachment loss. The net electron loss is then dominated by the recombination process. The temporal evolution of electron density has also been reproduced by the numerical result of a system of three modal equations for a best fit detachment rate vd=2×103sec-1.

Original languageEnglish (US)
Pages (from-to)335-343
Number of pages9
JournalInternational Journal of Infrared and Millimeter Waves
Volume12
Issue number4
DOIs
StatePublished - Apr 1991

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering

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