부산대학교 도서관

The expansion dynamics of a laser-produced plasma has been studied using a 3-D particle-in-cell (PIC) code in the presence of an axial magnetic field. The electron–ion plasma ( $m_{i}/m_{e} = 100$ ) with finite electron temperature and cold ions is allowed to expand in an axial magnetic field of varying intensity. It was found that this simple PIC modeling is sufficient to reproduce many experimental observations. It was demonstrated that even at an initial electron temperature of 30 eV and a guiding magnetic field of 0.1 T, the plasma particles are susceptible to flute type of instability. The instability persists for higher magnetic field strength with a decrease in wavelength and amplitude. The rates of an increase in the flute amplitudes are consistent with the large ion Larmor radius/MHD Rayleigh–Taylor growth.