Radial perturbed magnetic field with different plasma pressures and viscosities

Evolution of the radial perturbed magnetic field with radius at different plasma pressures and viscosities is studied by using Fourier transforms and Finite difference method. The main conclusions are that the effect of lower plasma pressure on radial perturbed magnetic fields is not evident. Higher plasma pressure has obvious effect on longer waves; however, shorter waves were affected by lower plasma pressure obviously. The maximum values of radial perturbed magnetic fields increase with the increase of plasma viscosities which indicates plasma viscosity cannot be neglected in the precise calculation.