Experimental and numerical studies on plasma behavior flowing across perpendicular magnetic field

9th International Conference on Inertial Fusion Sciences and Applications

Takezaki, T.^1 ; Takahashi, K.^1 ; Sasaki, T.^1 ; Kikuchi, T.^1 ; Harada, N.^1

Nagaoka University of Technology, Nagaoka, Niigata, Japan^1

关键词: Collisionless shocks;    Experimental and numerical studies;    Hybrid particles;    Magnetic field gradient;    Particle acceleration;    Perpendicular magnetic fields;    Plasma behavior;    Plasma focus devices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012083/pdf
DOI  :  10.1088/1742-6596/717/1/012083

来源: IOP

【 摘 要 】

To understand particle acceleration mechanisms in a collisionless shock, we have investigated the behaviors of a one-dimensional fast plasma flow in a perpendicular magnetic field by experimental and numerical simulations in a laboratory scale experiment. The velocity of the plasma flow generated by a taper-cone-shaped plasma focus device has varied by the gradient of the perpendicular magnetic field. The plasma flow has accelerated by applying the magnetic field with the negative gradient. To clarify the behavior of the plasma flow in the perpendicular magnetic field, numerical simulations based on an electromagnetic hybrid particle-in-cell (PIC) method have been carried out. These results indicate that the magnetic field gradient affects the plasma flow velocity.