Analysis of radiofrequency discharges in plasma
Patent
·
OSTI ID:7233743
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. 15 figs.
- DOE Contract Number:
- FG05-87ER60503
- Assignee:
- Louisiana State Univ., Baton Rouge, LA (United States)
- Patent Number(s):
- US 5135604; A
- Application Number:
- PPN: US 7-621784
- OSTI ID:
- 7233743
- Resource Relation:
- Patent File Date: 4 Dec 1990
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of radiofrequency discharges in plasma
Temporal and spectral characteristics of laser optogalvanic signals in an argon rf discharge
Role of photoacoustics in optogalvanics
Patent
·
Wed Jan 01 00:00:00 EST 1992
·
OSTI ID:7233743
Temporal and spectral characteristics of laser optogalvanic signals in an argon rf discharge
Journal Article
·
Tue Dec 01 00:00:00 EST 1992
· Bulletin of the American Physical Society
·
OSTI ID:7233743
Role of photoacoustics in optogalvanics
Journal Article
·
Sat Sep 15 00:00:00 EDT 1990
· Journal of Chemical Physics; (USA)
·
OSTI ID:7233743
Related Subjects
36 MATERIALS SCIENCE
ETCHING
PROCESS CONTROL
PLASMA ARC SPRAYING
PLASMA DIAGNOSTICS
HIGH-FREQUENCY DISCHARGES
MATERIALS
PLASMA
SPECTROMETERS
CONTROL
DEPOSITION
ELECTRIC DISCHARGES
MEASURING INSTRUMENTS
SPRAY COATING
SURFACE COATING
SURFACE FINISHING
360101* - Metals & Alloys- Preparation & Fabrication
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360601 - Other Materials- Preparation & Manufacture
ETCHING
PROCESS CONTROL
PLASMA ARC SPRAYING
PLASMA DIAGNOSTICS
HIGH-FREQUENCY DISCHARGES
MATERIALS
PLASMA
SPECTROMETERS
CONTROL
DEPOSITION
ELECTRIC DISCHARGES
MEASURING INSTRUMENTS
SPRAY COATING
SURFACE COATING
SURFACE FINISHING
360101* - Metals & Alloys- Preparation & Fabrication
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360601 - Other Materials- Preparation & Manufacture