Numerical Study of Z-pinch Dynamics at Different Working Regimes

Mass sweeping and current efficiency factors (f (m) and f (i) ) are two important parameters in Z-pinch devices, because one can compute those to better analyze Z-pinch dynamics. In this paper, the advanced shock model was employed to calculate and compare the aforementioned parameters for ACOL Z-pinch in three different working regimes. It was found that f (m) is in the range of 0.12-0.13 for hydrogen gas at p (0) = 400 and 800 Pa pressures and f (m) = 0.13 for helium gas at p (0) = 260 Pa. Similar works have resulted f (m) in the range 0.10-0.16. Therefore our computations of f (m) values (range 0.1-0.13) agree with the f (m) range, and it confirms our model. Therefore, the factors can be precisely being calculated using advanced shock model for various Z-pinch systems at different working regimes.