THE EFFECT OF TEMPERATURE ON THE HALF-WIDTH OF THE ETHYLENE ABSORPTION AT 10μ10 \mu

Author Institution: Department of Physics, East China Normal UniversityThe line strength and Doppler width will vary only with temperature, whereas the half width will vary both with temperature and pressure. A stabilized $10 \mu p(14) CO_{2}$ laser line was used to measure the variation of absorption with temperature at constant density of ethylene. Measurements of almost complete extinction by the ethylene indicate that the $949.454 cm^{-1}$ and $949.501 cm^{-1}$ transitions are the frequencies which used to be considered. The results of five seperate constant density runs were obtained. The curves were computer-calculated for value of the temperature dependent parameter differing by 0.1 and ranging from 0.5 to 1.2. It is concluded that the temperature dependence of the linewidth is close to $T^{-0.6}$, while the value would be $T^{-0.5}$ according to the theoritical interpretation

THE LASER QUANTITATIVE SPECTRA OF DIOXIDE CARBON AT 10μ\mu BANDS

Address: Department of Physics, East-China Normal University, Shanghai, 200062, People's Republic of ChinaAuthor Institution:Recent measuring of $CO_{2}$ vi-rotational lines at 10$\mu$ bands has performed under the temperature dependent conditions, ranging from room temperature to around hundreds. The line strength, half-width due pressure broadening and its temperature dependent factors have been obtained through experiments. The results showed that the theoretical calculating values of atmospheric absorption for laser radiation were strongly dependent on atmosphere temperature since the spectra dependence of the cross section varied at different conditions. The data given referred to a wide range of quantitative spectral parameters, including line strength, self and $N_{2}$-broadening