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Investigation of pinching discharges in MPC device operating with nitrogen and xenon gases

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Czechoslovak Journal of Physics Aims and scope

Abstract

Discharge characteristics and parameters of plasma streams generated by magnetoplasma compressor (MPC) of compact geometry with conical-shaped electrodes and pulsed gas supply are studied for different operation regimes. The current — voltage characteristics of the discharge and dependencies of plasma stream velocity on discharge current are analyzed. It is shown that U d(I d) ∼ aI d b, where b depends on mass flow rate of working gas and time delay between start of gas supply and discharge switching on. Optimal operation regimes are characterized by b ∼ 3. The high-speed imaging the plasma discharge and compression dynamics is carried out in frame-by-frame regime with different absorption optical filters. Spectroscopy measurements of plasma density and electron temperature in compression region of MPC have been performed on the base of Stark broadening of spectral lines and intensities ratio in visible wave-range. Efficiency of MPC operation with nitrogen and xenon gases and influence of the kind of working gas on parameters of compression region are analyzed.

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Authors and Affiliations

  1. Institute of Plasma Physics of the NSC KIPT, Akademicheskaya St.1, 61108, Kharkov, Ukraine

    V. V. Chebotarev, I. E. Garkusha, M. S. Ladygina, A. K. Marchenko, Yu. V. Petrov, D. G. Solyakov, V. I. Tereshin, S. A. Trubchaninov & A. V. Tsarenko

  2. Argonne National Laboratory, Argonne, IL, 60439-4825, USA

    A. Hassanein

Authors
  1. V. V. Chebotarev
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  2. I. E. Garkusha
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  3. M. S. Ladygina
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  4. A. K. Marchenko
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  5. Yu. V. Petrov
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  6. D. G. Solyakov
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  7. V. I. Tereshin
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  8. S. A. Trubchaninov
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  9. A. V. Tsarenko
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  10. A. Hassanein
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Chebotarev, V.V., Garkusha, I.E., Ladygina, M.S. et al. Investigation of pinching discharges in MPC device operating with nitrogen and xenon gases. Czech J Phys 56 (Suppl 2), B335–B341 (2006). https://doi.org/10.1007/s10582-006-0219-y

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  • DOI: https://doi.org/10.1007/s10582-006-0219-y

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