Efficient neutron production from a novel configuration of deuterium gas-puff z-pinch

D. Klir, P. Kubes, K. Rezac, J. Cikhardt, J. Kravarik, O. Sila, A. V. Shishlov, B. M. Kovalchuk, N. A. Ratakhin, V. A. Kokshenev, A. Yu Labetsky, R. K. Cherdizov, F. I. Fursov, N. E. Kurmaev, G. N. Dudkin, B. A. Nechaev, V. N. Padalko, H. Orcikova, K. Turek

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22 Citations (Scopus)


A novel configuration of a deuterium z pinch has been used to generate fusion neutrons. Injecting an outer hollow cylindrical plasma shell around an inner deuterium gas puff, neutron yields from DD reactions reached Yn=(2.9±0.3)×1012 at 700 ns implosion time and 2.7 MA current. Such a neutron yield means a tenfold increase in comparison with previous deuterium gas puff experiments at the same current generator. The increase of beam-target yields was obtained by a larger amount of current assembled on the z-pinch axis, and subsequently by higher induced voltage and higher energies of deuterons. A stack of CR-39 track detectors on the z-pinch axis showed hydrogen ions up to 38 MeV. Maximum neutron energies of 15 and 22 MeV were observed by radial and axial time-of-flight detectors, respectively. The number of DD neutrons per one joule of stored plasma energy approached 5×107. This implies that deuterium gas puff z pinches belong to the most efficient plasma-based sources of DD neutrons.

Original languageEnglish
Article number095001
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 3 Mar 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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