%A Song Xiao-Shu(宋晓书), Cheng Xin-Lu(程新路), Yang Xiang-Dong(杨向东), Linghu Rong-Feng(令狐荣锋), and Lv Bing(吕兵) %T Line intensities of the asymptotic asymmetric-top radical HO2 at high temperatures %0 Journal Article %D 2008 %J Chin. Phys. B %R 10.1088/1674-1056/17/1/028 %P 158-163 %V 17 %N 1 %U {https://cpb.iphy.ac.cn/CN/abstract/article_109395.shtml} %8 2008-01-20 %X The total internal partition sums were calculated in the product approximation at temperatures up to 5000\,K for the asymptotic asymmetric-top HO$_{2}$ molecule. The calculations of the rotational partition function and the vibrational partition function were carried out with the rigid-top model and in the harmonic oscillator approximation, respectively. Our values of the total internal partition sums are consistent with the data of HITRAN database with $-$0.14% at 296 K. Using the calculated partition functions, we have calculated the line intensities of $\nu _{2}$ band of HO$_{2}$ at several high temperatures. The results showed that the calculated line intensities are in very good agreement with those of HITRAN database at temperatures up to 3000 K, which provides a strong support for the calculations of partition functions and line intensities at high temperatures. Then we have extended the calculation to higher temperatures. The simulated spectra of $\nu_{2}$ band of the asymptotic asymmetric-top HO$_{2}$ molecule at 4000 and 5000 K are also obtained.