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Title: Analysis of radiofrequency discharges in plasma

Abstract

Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition.

Inventors:
 [1];  [1]
  1. Baton Rouge, LA
Issue Date:
Research Org.:
Louisiana State Univ., Baton Rouge, LA
OSTI Identifier:
868417
Patent Number(s):
5135604
Assignee:
Board of Supervisors of Louisiana State University and Agricultural and (Baton Rouge, LA)
DOE Contract Number:  
FG05-87ER60503
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
analysis; radiofrequency; discharges; plasma; separation; laser; optogalvanic; signals; components; ionization; rate; change; component; photoacoustic; mediated; performed; overlap; time; measuring; time-resolved; rf; discharge; frequency; varied; near; electrical; resonance; peak; associated; driving; detecting; circuits; novel; spectrometer; constructed; measurements; useful; understanding; controlling; processes; etching; deposition; plasma etching; plasma deposition; discharge plasma; plasma etch; electrical resonance; measuring time; change component; resonance peak; /216/118/156/204/356/

Citation Formats

Kumar, Devendra, and McGlynn, Sean P. Analysis of radiofrequency discharges in plasma. United States: N. p., 1992. Web.
Kumar, Devendra, & McGlynn, Sean P. Analysis of radiofrequency discharges in plasma. United States.
Kumar, Devendra, and McGlynn, Sean P. Wed . "Analysis of radiofrequency discharges in plasma". United States. https://www.osti.gov/servlets/purl/868417.
@article{osti_868417,
title = {Analysis of radiofrequency discharges in plasma},
author = {Kumar, Devendra and McGlynn, Sean P},
abstractNote = {Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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