Ultraviolet-visible spectroscopy of laser-produced aluminum plasmas
Abstract
The optical emission spectra (180 to 760 nm) of plasmas produced by a flashlamp-pumped dye laser focused on an aluminum target have been recorded and analyzed. In the incident intensity range from near plasma threshold to 5 x 107 W/sq cm, the electron temperature was calculated from the relative emission intensity of Al(II) states (Te = 8.0 x 103 K). The electron density was determined from Stark broadened linewidths of four Al(II) lines. Both the spatial and temporal dependence of the emission spectra were obtained, providing a map of the electron density and temperature.
- Publication:
-
Final Report Aerospace Corp
- Pub Date:
- January 1988
- Bibcode:
- 1988aerc.rept.....K
- Keywords:
-
- Aluminum;
- Electron Density (Concentration);
- Emission Spectra;
- Laser Plasmas;
- Metallic Plasmas;
- Dye Lasers;
- Electron Energy;
- Electron Pumping;
- Flash Lamps;
- Laser Outputs;
- Radiation Effects;
- Spectroscopy;
- Plasma Physics