OPTIKA ATMOSFERY I OKEANA JOURNAL
V.E. ZUEV INSTITUTE OF ATMOSPHERIC OPTICS
Vol. 5, issue 09, article # 7
pdf Ageev B. G., Nikiforova O. Yu., Sapozhnikova V. A. On the dependence of opto-acoustic detector sensitivity on pressure of a gas under study. // Atmospheric and oceanic optics. 1992. V. 5. No. 09. P. 622-625.Copy the reference to clipboard
Abstract:
Opto–acoustic detectors are widely used in laser gas analysis and spectroscopy. As a rule, these detectors are employed under atmospheric and, sometimes, under lower pressures. In this case the pressure dependence of opto–acoustic response appears. This paper describes the results of study of such dependences for H2O, CO2, and their mixtures with different buffer gases with CO2–laser radiation at λ = 10.6 μm. It was very interesting to compare the changes of photoacoustic amplitudes with pressure in these two gases because of specific behaviors of their absorption coefficients.