Time Resolved Correlation Photoacoustic Spectra of Gaseous Biacetyl
1987 年 3 巻 1 号 p. 3-5
詳細
1987 年 3 巻 1 号 p. 3-5
Correlation photoacoustic technique has been applied to the study of energy transfer of an organic gas, biacetyl, in comparison with the results obtained by the ordinary phase technique. The correlation photoacoustic spectra of the first and the second kind were measured at room temperature, 30Torr, where the spectra of the second kind were measured at the delay times between 0.06 and 3.30ms. This can be regarded as the measurement of time resolved photoacoustic spectra, a new application of correlation photoacoustics. In the time resolved spectra the intensity of the absorption band at 285nm growed faster than that at 455nm. This is consistent with the results reported in terms of the phase lag between the fast and the slow heat. When the oxygen gas was added (10Torr), each spectrum showed quite a similar pattern, showing the quenching effect of the gas added.
