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Measurements of Rate Constants of Energy Transfer Processes in Ar/He Plasma of Pulse-Periodic Discharge

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Abstract—

The rate constants of the Ar 2p6, 2p7, 2p8, and 2p9 state quenching during collisions with helium in Ar/He plasma were obtained for the first time at a gas temperature in the discharge plasma of ~410 K. Ar/He plasma is an active medium convenient for studying optically pumped lasers based on metastable atoms of heavy inert gases. Previous models did not contain the 2p6 and 2p7 levels, but they should be taken into account in double pumping schemes. Experiments show that these levels are actively populated at pressures above 100 Torr. The rate constants are determined by simulating the time dependences of the 2p6, 2p7, 2p8, and 2p9 concentrations obtained experimentally by pumping the 1s5 → 2p7 and 1s5 → 2ps transition using radiation of a pulsed tunable Ti:Sa laser.

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Authors and Affiliations

  1. Samara Branch of Lebedev Physical Institute, Russian Academy of Sciences, 443011, Samara, Russia

    R. A. Kuramshin, A. P. Torbin, M. I. Svistun, M. V. Zagidullin, A. K. Chernyshov & P. A. Mikheyev

  2. Samara University, 443086, Samara, Russia

    R. A. Kuramshin

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  1. R. A. Kuramshin
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  2. A. P. Torbin
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  3. M. I. Svistun
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  4. M. V. Zagidullin
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  5. A. K. Chernyshov
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  6. P. A. Mikheyev
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Correspondence to A. P. Torbin.

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Translated by A. Kazantsev

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Kuramshin, R.A., Torbin, A.P., Svistun, M.I. et al. Measurements of Rate Constants of Energy Transfer Processes in Ar/He Plasma of Pulse-Periodic Discharge. Bull. Lebedev Phys. Inst. 50, 207–213 (2023). https://doi.org/10.3103/S1068335623060064

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