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

Research output: Contribution to journalArticle

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

Keywords

  • Plasma radiation sources
  • Plasma stability

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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    Baksht, R. B., Fedunin, A. V., Labetsky, A. Y., Russkikh, A. G., Shishlov, A. V., Diyankov, O. V., Glazyrin, I. 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