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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2024 Volume 50, Issue 1, Pages 43–46 (Mi pjtf6583)

Elastic and inelastic scattering of atomic oxygen on molecular oxygen for relative kinetic energies of 10–6000 cm$^{-1}$

A. P. Palov, A. N. Kropotkin, A. A. Chukalovsky, T. V. Rakhimova

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Abstract: The elastic and inelastic scattering cross sections of the O$(^3P_g)$+O$_2(^3\Sigma_g^-)$ system for the first vibrational levels of the O$_2$ molecule were calculated quantum-mechanically on the ground O$_3(^1A')$, surface obtained using the multi-reference configurational interaction method (MRCI/AVQZ-F12). The obtained scattering cross sections can be used for excitation and relaxation rates calculations of O$_2$ molecule ro-vibrational levels by atomic oxygen, which are necessary for modeling low-temperature plasma containing oxygen, for example, in gas discharge lasers and etching chambers.

Keywords: elastic and inelastic scattering, atom-diatom collision, oxygen, potential energy surface.

UDC: 02.2; 04.1

Received: 04.09.2023
Revised: 15.10.2023
Accepted: 15.10.2023

DOI: 10.61011/PJTF.2024.01.56926.19719



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© Steklov Math. Inst. of RAS, 2025