Spectroscopy and physics of atoms and molecules

Interaction of nitrobenzene by ArF laser

A. V. Puchikin^a, Yu. N. Panchenko^ab, M. V. Andreev^b, V. E. Prokop'ev<sup>ab

a</sup> Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk
^b Tomsk State University

Abstract: A single-frequency process of interaction between the radiation of an excimer ArF laser and the vapor phase of nitrobenzene is considered. The fluorescence of vibrationally excited nitric oxide molecules formed during a photofragmentation of nitrobenzene is investigated. The influence of inert gases He, Ne and N$_2$ on the fluorescence of the excited states of NO С$^2\Pi$ ($\nu'$ = 0) and NO A$^2\Sigma$, D$^2\Sigma$ has been demonstrated. In a nitrogen environment, the fluorescence of NO A$^2\Sigma$ ($\nu'$ = 0) is enhanced due to the intermolecular non-radiative energy transfer from the metastable level N$_2$ A$^3\Sigma$ to the electronic level of NO A$^2\Sigma$.

Keywords: nitro compound, photofragmentation, nitric oxide, fluorescence.

Received: 21.05.2025
Revised: 21.06.2025
Accepted: 04.08.2025

DOI: 10.61011/OS.2025.08.61506.8193-25

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