Laser Frequency-Modulated Spectroscopy of a Laser-Guided Plasma in Sodium Vapor: Line Positions for NaH (A1Σ+–X1Σ+), Na (9–13dand 11–14s), and Ar (5p–4s)
✍ Scribed by J.T. Bahns; C.C. Tsai; B. Ji; J.T. Kim; G. Zhao; W.C. Stwalley; J.C. Bloch; R.W. Field
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 254 KB
- Volume
- 186
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
Laser frequency-modulated (FM) spectroscopy has been used as an axial probe of a laser-guided electric discharge in sodium-argon vapor contained in an optically accessible metal heat pipe oven. Absorption measurements in the region 23 106-23 881 cm 01 provided accurate line positions ({õ0.006 cm 01 ) for 141 transitions in the £ Å 3-8 R £Љ Å 0 and £ Å 5-9 R £Љ Å 1 bands of NaH (A 1 S / -X 1 S / ). In addition, 18 transitions of Na (3p to 9-13d and 11-14s) and 10 of argon (5p -4s) were measured. Analysis of the spectrum indicates that perhaps all absorption signals are due to neutrals NaH, Na, and Ar and are observed via ''population'' modulation.