THE SIGNAL TO NOISE RATIO OF GASEOUS PHOTOACOUSTIC SYSTEMS

dc.creatorPEREIRA, D
dc.creatorSCALABRIN, A
dc.date1992
dc.dateNOV
dc.date2014-12-16T11:33:04Z
dc.date2015-11-26T16:56:51Z
dc.date2014-12-16T11:33:04Z
dc.date2015-11-26T16:56:51Z
dc.date.accessioned2018-03-28T23:44:21Z
dc.date.available2018-03-28T23:44:21Z
dc.identifierInfrared Physics. Pergamon-elsevier Science Ltd, v. 33, n. 6, n. 549, n. 555, 1992.
dc.identifier0020-0891
dc.identifierWOS:A1992KB09000013
dc.identifier10.1016/0020-0891(92)90071-Z
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/72454
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/72454
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/72454
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277502
dc.descriptionMeasurement of small absorption coefficients of weakly absorbing or trace gases in the atmosphere has been one of the most important applications of laser photoacoustic devices. Normally, the major factor limiting the sensitivity of these systems is the spurious signal produced by the heating of the cell windows, due to the partial absorption of the laser pump radiation. We present a simple photoacoustic configuration that eliminates the spurious window and external background signals and enhances the main (real) signal of IR gaseous photoacoustic systems, optimizing the signal-to-noise ratio.
dc.description33
dc.description6
dc.description549
dc.description555
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationInfrared Physics
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectSpectroscopy
dc.subjectPollution
dc.subjectDioxide
dc.subjectLaser
dc.subjectCell
dc.titleTHE SIGNAL TO NOISE RATIO OF GASEOUS PHOTOACOUSTIC SYSTEMS
dc.typeArtículos de revistas


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