Title :
Characterization of dynamic and structured plasma using laser-collision induced fluorescence
Author :
Barnat, E.V. ; Weatherford, B.R. ; Kolobov, V.I. ; Hubble, A.A. ; Foster, J.E.
Author_Institution :
Sandia Nat. Labs., Albequerque, NM, USA
Abstract :
Laser collision-induced fluorescence (LCIF)1 is a powerful diagnostic which can be used for making temporally and spatially resolved measurements of electron densities in a plasma discharge. The technique, which involves the measurement of optical emission emanating from higher energy excited states due to the redistribution of the lower energy laser-excited state by collisions with energetic electrons, has been readily employed to study helium discharges. In this work, we report on recent systems studied with the LCIF diagnostic and describe efforts to extend the LCIF technique to argon based plasma systems.
Keywords :
argon; discharges (electric); helium; plasma density; plasma diagnostics; Ar; He; LCIF diagnostic; argon based plasma system; dynamic plasma characterization; electron density; helium discharges; high energy excited states; laser-collision induced fluorescence; low energy laser-excited state; optical emission measurement; plasma discharge; structured plasma characterization; Discharges (electric); Fluorescence; Laser excitation; Measurement by laser beam; Optical variables measurement; Plasma measurements; Plasmas;
Conference_Titel :
Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-2711-1
DOI :
10.1109/PLASMA.2014.7012462
