Acceleration of protons and deuterons up to 35 MeV and generation of 1013 neutrons in a megaampere deuterium gas-puff z-pinch

D. Klir, A. V. Shishlov, V. A. Kokshenev, P. Kubes, K. Rezac, S. Buryskova, R. K. Cherdizov, J. Cikhardt, B. Cikhardtova, G. N. Dudkin, J. T. Engelbrecht, F. I. Fursov, S. L. Jackson, J. Krasa, J. Kravarik, N. E. Kurmaev, V. Munzar, V. N. Padalko, N. A. Ratakhin, O. SilaK. Turek, V. A. Varlachev, R. Wagner

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The acceleration of hydrogen ions up to 35 MeV is observed in the z-pinch experiments on the GIT-12 generator at a 3 MA current and 0.6 MV driving voltage. High ion energies are obtained with a novel configuration of a deuterium gas-puff z-pinch. In this configuration, a hollow cylindrical plasma shell is injected around an inner deuterium gas puff to form a homogeneous, uniformly conducting layer between electrodes at the initial phase of z-pinch implosion. The stable implosion at the velocity up to 650 km s-1 is important to deliver more current onto the z-pinch axis. Magnetohydrodynamic instabilities become apparent first at stagnation. After the disruptive development of m = 0 instabilities, ∼20 ns pulses of high-energy photons, neutrons, electrons, and ions are observed. The average neutron yield is 2 ×1012. The ion emission is characterized by various diagnostic techniques including those based on the usage of neutron-producing samples. When a large neutron-producing sample is placed onto the axis below a cathode mesh, the neutron yield is increased up to (1.1 ±0.3) ×1013. Considering a ∼130 kJ energy input into z-pinch plasmas and magnetic field, this implies the neutron production efficiency of ∼108 neutrons per one Joule of the z-pinch energy.

Original languageEnglish
Article number014018
JournalPlasma Physics and Controlled Fusion
Volume61
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • cable guns
  • deuterium
  • gas puff
  • ion acceleration
  • neutrons
  • z-pinch

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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    Klir, D., Shishlov, A. V., Kokshenev, V. A., Kubes, P., Rezac, K., Buryskova, S., Cherdizov, R. K., Cikhardt, J., Cikhardtova, B., Dudkin, G. N., Engelbrecht, J. T., Fursov, F. I., Jackson, S. L., Krasa, J., Kravarik, J., Kurmaev, N. E., Munzar, V., Padalko, V. N., Ratakhin, N. A., ... Wagner, R. (2019). Acceleration of protons and deuterons up to 35 MeV and generation of 1013 neutrons in a megaampere deuterium gas-puff z-pinch. Plasma Physics and Controlled Fusion, 61(1), [014018]. https://doi.org/10.1088/1361-6587/aadc99