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dc.contributor.authorTanarro, Isabel-
dc.contributor.authorSanz, M.M.-
dc.contributor.authorBermejo, Dionisio-
dc.contributor.authorDomingo, Concepción-
dc.contributor.authorSantos, Julio-
dc.identifier.citationJournal of Chemical Physics 100, 238-246 (1994)-
dc.description9 p.: gráf.es_ES
dc.description.abstractIn this work several lines of the V3 fundamental band of the CH3 radical have been detected in a refrigerated hollow cathode discharge multipass cell filled with CH4, by using a discharge and laser amplitUde double modulation technique, with a difference frequency laser spectrometer and a double phase sensitive detection. Bands of the precursor CH4 and of C2H4 and C2H6 produced in the discharge have been observed too. By Doppler broadening and absorption variations, the increase of temperature with the establishment of the discharge has been tested.It is only -15 ·C. Nevertheless, a very high sensitivity in transmittance variations with temperature is achieved for transitions from highly excited levels of stable species. The method proposed can be very useful for the assignment of very weak bands.es_ES
dc.description.sponsorshipFinancial support of the Spanish CICYT (Projects Nos.PB89-0041 and PB91-0128).es_ES
dc.subjectPACS Infrared spectraes_ES
dc.subjectPACS Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factorses_ES
dc.titleDouble modulation-high resolution infrared spectroscopic technique: The V3 band of the CH3 radical and excited states of CH4 in a hollow cathode dischargees_ES
dc.description.peerreviewedPeer reviewedes_ES
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