Published July 15, 2004
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Pseudosparks in the nanosecond range of operation: firing, jitter, and current disruption

Creators

  • 1. Institute of Plasma Physics and Laser Microfusion, ul. Hery 23, Warsaw 00-908, Poland
  • 2. Scientific Production Company 'Pulsed Technology Ltd.', ul. Yablochkova 5, 390023 Ryazan, Russia
  • 3. Institute for Theoretical and Experimental Physics, Minatom RF, B. Cheremushkinskaya ul. 25, 117218 Moscow, Russia
  • 4. National Institute of Education
  • 5. Nanyang Technological University
  • 6. International Centre for Dense Magnetized Plasmas, UNESCO, ul. Hery 23, Warsaw 00-908, Poland

Description

The operation of pseudosparks (thyratrons with cold cathodes) of the TDI1-150k/25 type was investigated in the nanosecond time range of control and switching. Their most important characteristics are their reliability of firing—practically in 100% of cases, a jitter time—less than 4 ns, and the possibility of them switching off (interruption of a current) at a particular moment (after the first half of a discharge cycle). Investigations have shown that the TDI1-150k/25 device has all the above characteristics (which meet the current industrial demands) if the proper operational regimes are chosen. We have proven its parameters with a set of four switches working in parallel at the current level of a few hundred kiloamperes at our installations of the Dense Plasma Focus type, having an energy of several kilojoules.
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