Time-resolved laser-induced fluorescence of atomic nitrogen in a free-burning arc discharge

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/27.649576· OSTI ID:596820

Snyder, S C ^[1]; LeRoux, A M ^[2]

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1. Idaho National Engineering and Environmental Lab., Idaho Falls, ID (United States)
2. Montana State Univ., Bozeman, MT (United States). Dept. of Physics

An experiment to detect ground-state atomic nitrogen in an atmospheric-pressure argon-nitrogen free-burning 200 A arc by time-resolved two-photon laser-induced fluorescence is described. The time decay of the fluorescence pulses showed that quenching of the laser-excited state is rapid. Upper bound estimates of the pulse-decay time were determined as a function of radius, and were found to be on the order of 1 ns, and to decrease with increasing radii. The implications of rapid quenching of the laser-excited state to the application of laser-induced fluorescence as a plasma diagnostic tool are discussed.

• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC07-94ID13223
• OSTI ID: 596820
• Journal Information: IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 5 Vol. 25; ISSN ITPSBD; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRIC ARCS
FLUORESCENCE SPECTROSCOPY
LASER RADIATION
NITROGEN
PLASMA DIAGNOSTICS