Modeling of plasma fibers with radiative processes

A fully three dimensional Particle in Cell model of the plasma fiber had been developed. The code is written in FORTRAN 95, implementation CVF (Compaq Visual Fortran) under Microsoft Visual Studio user interface. Five particle solvers and two field solvers are included in the model. The solvers have relativistic and non-relativistic variants. The model can deal both with periodical and non-periodical boundary conditions. Plasma fiber and its surroundings are generated during the initiation process. Many parameters of the fiber, such as temperatures of electrons and ions, electric and magnetic fields, perturbations in the shape of the fiber and of the charged particle positions can be influenced by the input dialog. The PIC program package simulates the behavior of the fiber, namely the evolution of the magnetic field structures and turbulences. The numerical solution of the particle motion and calculation of the electric and magnetic fields is the core of the program package. There are many additional routines and collaborating program packages for computer diagnostics, graphical output and other calculations such as radiation, collisions with neutrals, etc. The mechanism of the surface turbulences generation in the plasma fiber was successfully simulated with the PIC program package. One of the latest goals of the PIC package was clarification of the onset of turbulence structures on the plasma fibers surfaces. It was shown that the development of these structures can be caused by initial a radial perturbation of plasma concentration and charge density. The surface structures simulated by PIC package were observed experimentally in various z -pinch apparatuses.