Laser-Induced Fluorescence of Xe I and Xe II in Ambipolar Plasma Flow
- Univ. of Patras, Rion-Patras (Greece)
- Univ. of Saskatchewan, Saskatoon, SK (Canada)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Laser-induced fluorescence diagnostic technique is applied here to probe xenon neutrals and single-charged ions in an ambipolar plasma source. A single tunable diode laser is employed for pumping both following transitions: 6s 2 [1/2] 1 0 -6p 2 [3/2] 1 0 (centered at 834.68 nm; air) and 5d[4] 7/2 -6p[3] 5/2 (centered at 834.72 nm; air), for Xe I and Xe II detection, respectively. The corresponding decay states are 6s[3/2] 1 0 and 6s[2] 3/2 leading to fluorescence signal at 473.415 and 541.915 nm, respectively. A detailed description of the experimental setup along with time-averaged fluorescence signals are presented, demonstrating the possible application of the above adjacent pumping wavelengths in xenon ambipolar plasmas for probing both ions and neutrals under various operating conditions. Furthermore a comprehensible discussion to what extent the registered laser-induced fluorescence signals mirror velocity distribution functions is realized, following hyperfine splitting and isotopic shift analysis.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-09CH11466
- OSTI ID:
- 1512475
- Journal Information:
- IEEE Transactions on Plasma Science, Vol. 46, Issue 11; ISSN 0093-3813
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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