ISSN:
1432-0649
Keywords:
07.60
;
43.85
;
42.60
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A photoacoustic intracavity configuration is presented; a resonant photoacoustic cell excited in its first longitudinal mode is placed inside the cavity of a CO2 waveguide laser. Due to the high laser power and the sharp intracavity focus, saturation effects occur in the excitation and relaxation process of absorbing C2H4 molecules. A more optimal configuration is applied to measure the C2H4 emission of several Rumex species. A detection sensitivity of 6 ppt (parts per trillion) C2H4 is reached, equivalent to a minimal detectable absorption of 1.8×10−10 cm−1.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00331909
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