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Slit discharge methods

Slit Discharge Methods Spectroscopy of Jet Cooled Hydrocarbon... [Pg.231]

Fig. 5.11. Left panel Schematic of the pulsed valve discharge modulation source. A 100 kHz square wave discharge 1 kV, lA) is strongly confined in the 1 mmxSOO /am X 4 cm region behind the slit expansion jaws. This yields slabs of spatially modulated jet-cooled radicals and molecular ions for detection via direct IR laser absorption and lock-in detection methods. Right panel Upper trace direct absorption spectra with conventional discharge modulation in a cw discharge source but without lock-in detection Lower trace spectra with frequency modulated discharge and lock-in detection, revealing substantial elimination of radical precursor and improves the absorption sensitivity to the near shot-noise level. Fig. 5.11. Left panel Schematic of the pulsed valve discharge modulation source. A 100 kHz square wave discharge 1 kV, lA) is strongly confined in the 1 mmxSOO /am X 4 cm region behind the slit expansion jaws. This yields slabs of spatially modulated jet-cooled radicals and molecular ions for detection via direct IR laser absorption and lock-in detection methods. Right panel Upper trace direct absorption spectra with conventional discharge modulation in a cw discharge source but without lock-in detection Lower trace spectra with frequency modulated discharge and lock-in detection, revealing substantial elimination of radical precursor and improves the absorption sensitivity to the near shot-noise level.
See other pages where Slit discharge methods is mentioned: [Pg.264]    [Pg.281]    [Pg.379]    [Pg.199]    [Pg.429]    [Pg.119]    [Pg.176]    [Pg.53]    [Pg.281]    [Pg.283]    [Pg.869]    [Pg.401]    [Pg.245]    [Pg.55]    [Pg.60]    [Pg.118]    [Pg.181]    [Pg.24]    [Pg.263]    [Pg.18]   
See also in sourсe #XX -- [ Pg.261 , Pg.262 , Pg.263 , Pg.264 ]



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