Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Mads Hammerich"'
Publikováno v:
Chemical Physics. 163:173-178
Kinetic cooling is studied through photoacoustic CO 2 laser monitoring on gas mixtures containing CO 2 in quantities typical of smoke. The photoacoustic response is recorded in the time domain as well as in the frequency domain, and results are given
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51eb96001bdc1dcc0531ed1fae898c98
https://doi.org/10.1016/0301-0104(92)87101-e
https://doi.org/10.1016/0301-0104(92)87101-e
Publikováno v:
Journal of Molecular Spectroscopy. 152:420-433
Photoacoustic absorption signatures have been obtained for ozone in 450-MHz tuning windows of a waveguide CO 2 laser. Out of 42 observed absorption lines, 31 are assigned to the ν 1 and the ν 3 bands, and 7 to various hot bands of 16 O 16 O 16 O. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1c687608d476291e5b42d7a5b734374
https://doi.org/10.1016/0022-2852(92)90079-4
https://doi.org/10.1016/0022-2852(92)90079-4
Publikováno v:
Applied Physics B Photophysics and Laser Chemistry. 51:272-284
The mode structure of hollow dielectric waveguide lasers with free space sections and flat mirrors is studied theoretically and experimentally. The study covers the fundamental mode and the three most important higher order modes, and graphs are give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::621b5d898a1ea9fe9af373e69e1e2cd5
https://doi.org/10.1007/bf00325048
https://doi.org/10.1007/bf00325048
Publikováno v:
Photoacoustic and Photothermal Phenomena III ISBN: 9783662138762
Photoacoustic Doppler limited spectra of mono-, tri- and perchloroethylene in windows around the CO2 laser frequencies are presented. Of these three molecules C2H3Cl alone exhibits well resolved line spectra. Measurements of pressure broadening for o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bfda20018af497626bab757b2ce65b6
https://doi.org/10.1007/978-3-540-47269-8_3
https://doi.org/10.1007/978-3-540-47269-8_3
Publikováno v:
SPIE Proceedings.
Ammonia monitoring is needed in most schemes for denitrification of power plant emission. In the PALAMON system we use a 500 MHz tunable, single mode, single line, CO2 laser as light source for a low pressure, high temperature, photoacoustic cell. Wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a499029fd010ecf2bd82cc3a4084e94
https://doi.org/10.1117/12.20340
https://doi.org/10.1117/12.20340
Publikováno v:
Applied Laser Spectroscopy ISBN: 9781468413441
The growing concern about our environment has led to a demand for methods and equipment which can perform a wide variety of monitoring tasks. The detection of specific molecules in the atmosphere may be motivated by the need for monitoring the emissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66606ec890a11d06cda0d69dd6a60e16
https://doi.org/10.1007/978-1-4684-1342-7_32
https://doi.org/10.1007/978-1-4684-1342-7_32
Publikováno v:
Photoacoustic and Photothermal Phenomena II ISBN: 9783662137956
Ammonia in power plant emission has been monitored down to 1ppm with a photoacoustic spectrometer using a tunable waveguide CO2 laser.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b49578eb2bfdcbe6f7f9f89bbf01f0a5
https://doi.org/10.1007/978-3-540-46972-8_91
https://doi.org/10.1007/978-3-540-46972-8_91
Publikováno v:
The Journal of the Acoustical Society of America. 99:1277
The microphone in a photoacoustic cell that is part of an apparatus for photoacoustic analysis of at least one substance is protected against the harmful effects from the analyzed substance by sonically communicating the microphone with the excitatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24926e5a8d55fa03efce1c61c2945ffb
https://doi.org/10.1121/1.414783
https://doi.org/10.1121/1.414783
Publikováno v:
Applied Physics B Photophysics and Laser Chemistry. 49:91-97
The paper describes a photoacoustic spectrometer for detection of NH3 in power plant emission with a detection limit below 1 ppm. The radiation source is a tunable CO2 waveguide laser, and detection is performed at reduced pressure, where the vibrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a55da62844189a8fb2fab4946132e67a
https://doi.org/10.1007/bf00332267
https://doi.org/10.1007/bf00332267
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