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Spectroscopy of condensed matter
Radiation characteristics of Ar$_{2}$Cl$^{*}$ excimer molecules under pumping of an Ar + CCl$_{4}$ dense gas mixture by high-energy electrons
A. I. Mis'kevichab, A. V. Podkopaevb a National Engineering Physics Institute "MEPhI", Moscow
b Institute for Physics and Power Engineering named after A. I. Leypunsky, Obninsk, Kaluga region
Abstract:
Spectral and temporal luminescence characteristics of gas mixtures (Ar + CCl$_{4}$), excited by a pulsed high-energy electron beam ($E_e$ = 220keV, $T_e$ = 5ns), have been investigated. It is found that Ar$_{2}$Cl$^{*}$ excimer molecules , emitting wide continuum $(4^2\Gamma-1^2\Gamma)$ at 245 nm, are formed in dense gas mixtures. Radiative deexcitation times and continuum quenching constants
($\lambda_{\operatorname{max}}$ = 245 nm) by the gas mixture components (Ar and CCl$_4$) are measured. A plasma chemical model of formation of Ar$_{2}$Cl$^{*}$ excimer molecules in Ar + CCl$_{4}$ dense gas mixtures under pumping by charged high-energy particles is proposed.
Keywords:
excimer, Ar$_{2}$Cl$^{*}$ molecule, high-energy electrons, luminescence.
Received: 19.04.2021 Revised: 19.04.2021 Accepted: 13.05.2021
Citation:
A. I. Mis'kevich, A. V. Podkopaev, “Radiation characteristics of Ar$_{2}$Cl$^{*}$ excimer molecules under pumping of an Ar + CCl$_{4}$ dense gas mixture by high-energy electrons”, Optics and Spectroscopy, 129:9 (2021), 1146–1151; Optics and Spectroscopy, 129:12 (2021), 1273–1278
Linking options:
https://www.mathnet.ru/eng/os61 https://www.mathnet.ru/eng/os/v129/i9/p1146
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