A theoretical investigation of the plasma behaviour in filippov type PF devices

The plasma behaviour in Filippov type plasma focus devices has been studied by using the simulations based on the ML-model. The effects of the current efficiency factor fi, mass shedding factor fm, gas pressure P and dis- charge voltage Vdis, on the quarter discharge period t1/4, maximum discharge current Imax and pinch time tp, have been investigated and discussed. This investigation showed that fi, fm, P, and Vdis, can have large effects on tp, t1/4, and Imax values. Among others, it was shown that while higher fm values lead to higher tp, t1/4, and Imax values, higher fi values lead to lower tp, t1/4, and Imax values, and that the increment of Vdis leads to the decrement of tp , and t1/4, but an almost linear increment of the Imax values.