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Evolution of a Diffusion Channel in an Inhomogeneous Electric Field of the KrF-Laser Pump Discharge

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The results of studying the 2D-simulation of evolution of a diffusion channel in the KrF-laser pump discharge initiated by the pin on the cathode surface are presented. It is shown that during the pump pulse, the inhomogeneity passes successively through three stages: a plasma spot on the cathode surface, a diffuse channel, and a high-conductivity channel. From the analysis of the dynamics of spatial distribution of spontaneous emission on the B0-X transition of the KrF molecule in such a discharge, it is obtained that the channel can work as an amplifying medium while the volumetric form of its glow is maintained. Despite the contraction of the channel into a narrow cord at the end of the pump pulse, the distribution of the radiation energy over the entire pulse has the shape of a torch with the width at the anode of ~0.6 cm.

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Authors and Affiliations

  1. Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    S. A. Yampol’skaya, A. G. Yastremsky, Yu. N. Panchenko & A. V. Puchikin

  2. V. E. Zuev Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    S. M. Bobrovnikov

Authors
  1. S. A. Yampol’skaya
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  2. A. G. Yastremsky
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  3. Yu. N. Panchenko
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  4. A. V. Puchikin
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  5. S. M. Bobrovnikov
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Corresponding author

Correspondence to S. A. Yampol’skaya.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 149–154, September, 2017.

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Yampol’skaya, S.A., Yastremsky, A.G., Panchenko, Y.N. et al. Evolution of a Diffusion Channel in an Inhomogeneous Electric Field of the KrF-Laser Pump Discharge. Russ Phys J 60, 1623–1629 (2018). https://doi.org/10.1007/s11182-018-1260-6

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  • DOI: https://doi.org/10.1007/s11182-018-1260-6

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