Study on Acceleration Mechanism of Particles from Fast Plasma Flow Generated by Tapered Cone Plasma Focus Device

摘要

Behavior of a one-dimensional fast plasma flow generated by a tapered cone plasma focus device flowing in a perpendicular magnetic field has been investigated. A velocity of the plasma flow is about 30 km/s using a helium gas discharge with a pressure of 0.5 Pa. The magnetic Reynolds number is estimated to be 4.2, and the plasma pressure is higher than the magnetic pressure. The plasma flow has decelerated by the magnetic pressure, and the magnetic field is frozen-in at the front of the plasma flow. The plasma flow affects the magnetic field, and induced electromagnetic fields occur the acceleration of ions from the plasma flow.