Search for drive parameter of neutron-optimized Z-pinches and dense plasma foci

Daniel Klir, Vladimir A. Kokshenev, Pavel Kubes, Aleksey Yu Labetsky, Marian Paduch, Karel Rezac, Alexander V. Shishlov

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Dense plasma foci and deuterium gas puff Z-pinches are studied as sources of fusion neutrons. To design a neutron-optimized plasma focus, the drive parameter I-{0}/\big (a({\rho-{0}})^{1/2}\big) has been discussed in the last 15 years. Here, I0, a, and \rho0 represent the peak discharge current, the inner electrode radius, and the initial gas density, respectively. In this paper, similarities between a dense plasma focus and a gas puff Z-pinch are shown. The drive parameter of dense plasma foci seems to be closely related to the I/({\mathhat{m}})1/2 parameter of Z-pinches, where I and {\mathhat{m}} stand for the current during stagnation and linear mass, respectively. On the 3-MA Z-pinch generator, it was found that the optimal I/({\mathhat{m}})1/2 parameter reached the value of about 230~{\rm kA}\,\cdot\, ({{\rm cm}/\mu{\rm g}})1/2. This optimal value can be explained by a tradeoff between the energy of fast deuterons and the number of fast and target deuterons. Obtained experimental results show that the optimal drive parameter cannot be fully explained without the consideration of ion acceleration mechanisms to fusion energies.

Original languageEnglish
Article number6627987
Pages (from-to)3129-3134
Number of pages6
JournalIEEE Transactions on Plasma Science
Volume41
Issue number11
DOIs
Publication statusPublished - 2013

Keywords

  • Deuterium
  • drive parameter
  • neutron
  • plasma focus
  • Z-pinch

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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    Klir, D., Kokshenev, V. A., Kubes, P., Labetsky, A. Y., Paduch, M., Rezac, K., & Shishlov, A. V. (2013). Search for drive parameter of neutron-optimized Z-pinches and dense plasma foci. IEEE Transactions on Plasma Science, 41(11), 3129-3134. [6627987]. https://doi.org/10.1109/TPS.2013.2283890