| Abstract: | 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. |
