Plasma,called the fourth form of matter,not only plays an important role in astrophysics,but also becomes the new interest in atomic physics,material science and other aspects.Ion beam–plasma interaction can be a new solution to understand the plasma properties.For instance the collision of ion and free electrons dominate in plasma,which can induce the higher energy loss and the change of charge state,as well as the wake-field can modify the ion beam from a continues mode to a pulsed mode with a focused/unfocused spot.
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