Application of Tunable Diode Laser Spectroscopy for Time Resolved Measurements in Electron-Beam Produced Plasma

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...

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Bibliographic Details
Main Authors: Serdyuchenko, Anna Yu, Seeley, Megan V., Sinnott, Quinn J., Vidmar, Robert J.
Format: Conference Proceeding
Language:English
Subjects:
Absorption
Diode lasers
Distributed feedback devices
Electron beams
Fiber lasers
Plasma applications
Plasma measurements
Spectroscopy
Time measurement
Tunable circuits and devices
Online Access:Request full text
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Summary: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 (H 2 O, OH, CO 2 , CO, NO and N 2 O) 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.
ISSN:0730-9244
2576-7208
DOI:10.1109/PPPS.2007.4345613