The numerical computation of the preionization phase of a toroidal pinch discharge

Development of a magnetohydrodynamic code for axisymmetric, high-. beta. plasmas with complex magnetic fields

“…It is of interest to note that great effort has be'.i expended previously to find /™ ln by an experimental diagnostic technique for use in a computer code. 75 In that work, it was also observed that / min varied with the fill pressure, which is in agreement with the above arguments if we observe that varying the amount of gas injected into the apparatus will cause the density to vary and therefore the fill pressure as well.…”

“…Many simulation studies have assumed that a study of the preionization phase of a magnetically confined plasma could be bypassed because the plasma is essentially uniform after that phase is complete. Studies by Lindemuth et al 75 have shown that this is far from what actually occurs. As the preionization phase is of critical importance to the amount of flus trapped by the plasma in Topolotron experiments, there has never been the temptation in this work to assume a uniform plasma state after preionization.…”

Parameter space for magnetized fuel targets in inertial confinement fusion

“…The agreement between our simple model calculations and the more complete two-dimensional simulations as discussed in Section 4 lends credibility to the computed results reported in this paper. The same physical model and numerical methods used in the two-dimensional computations have predicted experimental results to a very satisfactory degree in nonimploding geometries for experiments in which the densities spanned a large fraction of the parameter space of interest within the context of this paper [23,24]. Even so, the computations of the fuel behaviour in the Sandia and Tidman-Goldstein targets were not self-consistent in that the shell dynamics were not included.…”