Title :
Application of Tunable Diode Laser Spectroscopy for Time Resolved Measurements in Electron-Beam Produced Plasma
Author :
Serdyuchenko, Anna Yu ; Seeley, Megan V. ; Sinnott, Quinn J. ; Vidmar, Robert J.
Author_Institution :
Univ. of Nevada, Reno
Abstract :
Summary form only given. Tunable diode laser absorption spectroscopy was used for the investigation of the temporal evolution of neutral species concentrations in air plasma, which is produced by a 100 keV electron beam at pressures from 760 Torr down to 1 Torr. The spectrometer applied is based on a set of fiber-coupled distributed feedback lasers. Absorption spectra of species (H2O, OH, CO2, CO, NO and N2O) in near infrared (1.3 -1.8 nm) were recorded with resolution ~ 1 ms. Temperatures and absolute values for the concentrations were found over a broad dynamic range. Possibilities for increasing the signal-to-noise ratio are outlined.
Keywords :
electron beams; fibre lasers; plasma diagnostics; plasma-beam interactions; semiconductor lasers; spectra; CO2; H2O; N2O; OH; air plasma; electron volt energy 100 keV; electron-beam produced plasma; fiber-coupled distributed feedback lasers; pressure 760 torr to 1 torr; signal-to-noise ratio; tunable diode laser absorption spectroscopy; wavelength 1.3 mum to 1.8 mum; Absorption; Diode lasers; Distributed feedback devices; Electron beams; Fiber lasers; Plasma applications; Plasma measurements; Spectroscopy; Time measurement; Tunable circuits and devices;
Conference_Titel :
Plasma Science, 2007. ICOPS 2007. IEEE 34th International Conference on
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0915-0
DOI :
10.1109/PPPS.2007.4345613
