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Abstract— <p>Devices based on the effect of plasma compression by a magnetic field (plasma pinching), i.e., plasma focus chambers with non-cylindrical <i>z</i> pinch formed in them, are considered. A range of plasma focus chambers covering the neutron yield range from 10<sup>5</sup> to 10<sup>12</sup> neutrons/pulse at neutron energies of 2.5 and 14&#xa0;MeV has been developed by Dukhov All-Russia Research Institute of Automatics. The experimental results for the influence of pulsed thermal, electrical, and mechanical actions on the service life of these chambers are summarized. The experimentally achieved operating lives of plasma focus chambers with deuterium or deuterium−tritium fillings are thousands of shots at discharge currents <i>I</i> = 100−300 kA, hundreds of shots at <i>I</i> = 600 kA, and approximately 100−200 shots at <i>I</i> &gt; 1 MA.</p>

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Physical Processes in Sealed Plasma Focus Chambers That Limit Their Service Life

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • Yu. V. Mikhailov,
  • I. A. Prokuratov,
  • B. D. Lemeshko

摘要

Abstract—

Devices based on the effect of plasma compression by a magnetic field (plasma pinching), i.e., plasma focus chambers with non-cylindrical z pinch formed in them, are considered. A range of plasma focus chambers covering the neutron yield range from 105 to 1012 neutrons/pulse at neutron energies of 2.5 and 14 MeV has been developed by Dukhov All-Russia Research Institute of Automatics. The experimental results for the influence of pulsed thermal, electrical, and mechanical actions on the service life of these chambers are summarized. The experimentally achieved operating lives of plasma focus chambers with deuterium or deuterium−tritium fillings are thousands of shots at discharge currents I = 100−300 kA, hundreds of shots at I = 600 kA, and approximately 100−200 shots at I > 1 MA.