Plasma heating and emission of runaway charged particles in a plasma focus device
Plasma Physics Laboratory, Department of Physics and Engineering Physics, University of Saskatchewan Saskatoon, Saskatchewan S7N 5E2, Canada
Received: 8 December 2015
Accepted: 16 March 2016
The required experimental E-field across plasma to generate significant runaway electrons and hard X-rays during the pinch phase and the phase with anomalous resistance has been investigated in a dense plasma focus. The plasma voltage and inductance have been measured in a plasma focus with two different anode tip structures. The results show a significant generation of charged particles and hard X-rays at smaller E-field across the plasma column in the phase of anomalous resistances compared to the pinch phase. Plasma heating process may enhance the rate of runaway-charged-particle generation due to the combined effects of a reduced Dreicer field and the avalanche effects during the phase of anomalous resistance.
PACS: 52.59.Fn – Multistage accelerated heavy-ion beams / 52.59.Hq – Dense plasma focus
© EPLA, 2016