000128371 001__ 128371
000128371 005__ 20180913054907.0
000128371 0247_ $$2doi$$a10.1051/jp4:2005125002
000128371 02470 $$2ISI$$a000230014700003
000128371 037__ $$aCONF
000128371 245__ $$aMethane monitoring by near infrared photoacoustic spectroscopy: the importance of relaxation phenomena
000128371 260__ $$bEDP Sciences$$c2005
000128371 269__ $$a2005
000128371 336__ $$aConference Papers
000128371 490__ $$aJ. Phys. IV, Proc. (France)
000128371 500__ $$aNanophotonics & Metrol. Lab., Swiss Fed. Inst. of Technol., Laussane, Switzerland 8818748 methane concentration monitoring near infrared photoacoustic spectroscopy molecular relaxation effects dry oxygen laser-based photoacoustic sensor vibration-to-translation energy transfer gas mixture detection sensitivity 1.65 micron O2
000128371 520__ $$aThe importance of molecular relaxation in photoacoustic spectroscopy is discussed. The particular case of methane monitoring in dry oxygen using a 1.65-μm laser-based photoacoustic sensor is reported. The slow vibration-to-translation energy transfer occurring in this gas mixture results in a drastic reduction of the detection sensitivity. A quadratic response of the sensor to the methane concentration is also reported and explained by molecular relaxation effects
000128371 6531_ $$achemical variables measurement
000128371 6531_ $$agas mixtures
000128371 6531_ $$agas sensors
000128371 6531_ $$ainfrared spectroscopy
000128371 6531_ $$ameasurement by laser beam
000128371 6531_ $$aoptical sensors
000128371 6531_ $$aorganic compounds
000128371 6531_ $$aoxygen
000128371 6531_ $$aphotoacoustic spectroscopy
000128371 6531_ $$arotational-vibrational energy transfer
000128371 700__ $$0240237$$g107505$$aSchilt, S.
000128371 700__ $$0240238$$g111245$$aBesson, J. Ph
000128371 700__ $$aThévenaz, Luc$$g106544$$0240503
000128371 7112_ $$cRio de Janeiro, Brazil
000128371 773__ $$j125$$t13th International Conference on Photoacoustic and Photothermal Phenomena$$kCopyright 2006, IEE$$q7-10
000128371 909C0 $$xUS05033$$0252088$$pTHEVE
000128371 909C0 $$xU12146$$0252591$$pSCI-STI-LT
000128371 909CO $$pconf$$pSTI$$ooai:infoscience.tind.io:128371
000128371 937__ $$aTHEVE-CONF-2005-007
000128371 970__ $$a381/THEVE
000128371 973__ $$rNON-REVIEWED$$sPUBLISHED$$aEPFL
000128371 980__ $$aCONF