Journal article
Laser‐induced fluorescence measurement of plasma ion temperatures: Corrections for power saturation
Journal of vacuum science & technology. A, Vacuum, surfaces, and films, Vol.7(3), pp.977-981
05/1989
DOI: 10.1116/1.575831
Abstract
When using high‐power pulsed tunable dye lasers to measure plasma ion temperatures, it is important to attenuate the laser intensity. The temperature is found from the Doppler broadening of a spectral line. This may be obscured by saturation broadening, an instrumental effect encountered when too much laser intensity is used. Three useful experimental methods for determining the optimum pulsed laser intensity are found from a semiclassical atomic physics model. As an example, an Ar II transition pumped by a 1‐GHz bandwidth laser is examined. The fluorescence linewidth of room‐temperature ions broadens from 1.50 to 2.87 GHz when the homogeneous laser intensity is increased from 50 kW/m2 to 5 MW/m2.
Details
- Title: Subtitle
- Laser‐induced fluorescence measurement of plasma ion temperatures: Corrections for power saturation
- Creators
- M. J. Goeckner - University of IowaJ. Goree - Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242‐1479
- Resource Type
- Journal article
- Publication Details
- Journal of vacuum science & technology. A, Vacuum, surfaces, and films, Vol.7(3), pp.977-981
- DOI
- 10.1116/1.575831
- ISSN
- 0734-2101
- eISSN
- 1520-8559
- Number of pages
- 5
- Language
- English
- Date published
- 05/1989
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984428795702771
Metrics
2 Record Views