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Belevtsev, A A; Firsov, K N; Kazantsev, S Yu; Kononov, I G; Podlesnykh, S V, E-mail: abelevtsev@rambler.ru, E-mail: kazan@kapella.gri.ru, E-mail: k_firsov@rambler.ru2018
AbstractAbstract
[en] This paper reports on the comprehensive studies on a self-sustained volume discharge in SF6-based working media for electrochemical non-chain hydrogen fluoride (deuterium fluoride) lasers. The majority of the experimental results have first been obtained at various values of gas pressure for the discharge gaps with a large interelectrode distance, including plane electrode systems with a strong enhancement of the edge electric field. Some special features of the observed physical phenomena are explained using the developed adequate mathematical models. In particular, a radically new mechanism of the ionization instability in SF6-based mixtures at an intermediate pressure has been first considered and a relevant mathematical theory was developed. On this basis, the experimentally observable break-up of the discharge current into separate filaments in a laser-heated SF6-mixture was qualitatively explained. Some practical applications and recommendations have also been drawn from the performed studies. (paper)
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Available from http://dx.doi.org/10.1088/1361-6463/aad41c; Country of input: International Atomic Energy Agency (IAEA)
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