Investigation of the Line-Broadening Mechanism for Laser-Induced Copper Plasma by Time-Resolved Laser-Induced Breakdown Spectroscopy
✍ Scribed by Kyuseok Song; Hyungki Cha; Jongmin Lee; Yong-Ill Lee
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 86 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0026-265X
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✦ Synopsis
The line-broadening mechanism for three emission lines (510.55, 515.32, and 521.82 nm) in laser-induced copper plasma was investigated by time-resolved laser-induced breakdown spectroscopy. Two emission lines observed at 515.32 and 521.82 nm revealed a dramatic decrease in linewidth as the delay of the gate was increased, while the line at 510.55 nm showed a small decrease in linewidth. The different line-broadening behavior of the three transition lines is attributed to both Stark broadening and Rydberg-like atomic property at the energy levels involved in the emission process. The effect of the size of buffer gas as well as the intensity of laser on line broadening for these three lines is identified as minimal.