On stabilization of gas puff implosion: experiment and simulation

Rina B. Baksht, Anatoliy V. Fedunin, Aleksey Yu Labetsky, Alexander G. Russkikh, Alexander V. Shishlov, Oleg V. Diyankov, Igor V. Glazyrin, Serge V. Koshelev

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15 Citations (Scopus)

Abstract

A double gas puff was used to study the mitigation of the magneto-Rayleigh-Taylor (RT) instabilities for long implosion times (up to 250 ns). The experiments have been performed on the inductive storage GIT-4 (1.7 MA, 120 ns) generator. Current division between the outer and inner shells was controlled using magnetron-discharge preionization. The implosion of the a double gas puff, with the improved preionization, results in the formation of a uniform plasma column. The results of two-dimensional (2-D) radiation-magnetohydrodynamic simulations support the experimental results: a double gas puff implosion mitigates the RT instabilities, leading to the development of only small-amplitude waves. The 2-D simulation allowed us to explain the halo effect seen in the experiments: the use of the low hybrid conductivity in the calculation demonstrated the existence of the high density plasma core surrounded by a low density plasma halo.

Original languageEnglish
Pages (from-to)1259-1266
Number of pages8
JournalIEEE Transactions on Plasma Science
Volume26
Issue number4
DOIs
Publication statusPublished - 1 Dec 1998
Externally publishedYes

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Keywords

  • Plasma radiation sources
  • Plasma stability

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Baksht, R. B., Fedunin, A. V., Labetsky, A. Y., Russkikh, A. G., Shishlov, A. V., Diyankov, O. V., ... Koshelev, S. V. (1998). On stabilization of gas puff implosion: experiment and simulation. IEEE Transactions on Plasma Science, 26(4), 1259-1266. https://doi.org/10.1109/27.725158