SIMULATION

SIMULATION WITH NUMERICAL CODE-MACH2

A state of the art numerical code called MACH2 is used to model the dynamics of staged Z-pinch, which incorporate most of the important physics related features. This code has the following characteristics:

• Simulation code is based on 2&1/2 dimensional, time-dependent, single fluid, Magnetohydrodynamics (MHD) model.
• The code is used in Eulerian mode.
• External capacitor bank circuit is also modeled.
• Tabular (SESAME) equations of state is used to model the extreme physicsl conditions.
• Implicit MHD with all three components of magnetic field B and fluid velocity U.
• The code is studies a Multi-species plasma with radiative liner and hot target plasma.
• The code also has Flux-limited, single group, implicit radiation diffusion model.

EVOLUTION OF PLASMA DENSITY DURING IMPLOSION

This video shows the implosion of ion density in a staged Z-pinch towards the last 12 nano-second of a 112 nanoseconds of total implosion time. Stable shock compression of the target plasma is quite visible throughout implosion phase:

EVOLUTION OF PLASMA DENSITY DURING IMPLOSION

This video shows the implosion of ion temperature in a staged Z-pinch towards the last 12 nano-second of a 112 nanoseconds of total implosion time. Stable heating of the target plasma develops as the implosion proceeds.