Numerical studies of neon gas-puff Z-pinch dynamic process

The dynamic process of neon gas-puff Z-pinch, which may produce high temperature and density plasma, were numerically studied by one-dimensional lagrangian radiation magneto-hydrodynamic code developed by the authors. The spatio-temporal distributions of some plasma parameters in the process were obtained, and the dynamic process was reproduced. The results also show the zippering effect in gas-puff Z-pinch, and suggest that the main energy transformation process is Coulomb collision process between ion and electron, secondly is photoelectric process and bremsstrahlung radiation process. The energy transformation in Compton scattering process may not be taken into account. The x-ray energy radiated by Z-pinch plasma is produced mainly in photoelectric excitation and recombination process, secondly in bremsstrahlung radiation process. The energy consumed by Ohm heating is not larger than 10% of total energy delivered to load.