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Wakefield and stopping power of a hydrogen ion beam pulse with low drift velocity in hydrogen plasmas

  • Ling-Yu Zhang (a1) (a2) (a3), Xiao-Ying Zhao (a1) (a2), Xin Qi (a1) (a2), Guo-Qing Xiao (a1) (a2), Wen-Shan Duan (a1) (a2) and Lei Yang (a1) (a2) (a4)...

Abstract

A two-dimensional particle-in-cell (PIC) simulation is carried out to study the wakefield and stopping power for a hydrogen ion beam pulse with low drift velocity propagation in hydrogen plasmas. The plasma is assumed to be collisionless, uniform, non-magnetized, and in a steady state. Both the pulse ions and plasma particles are treated by the PIC method. The effects of the beam density on the wakefield and stopping power are then obtained and discussed. It is found that as the beam densities increase, the oscillation wakefield induced by the beam become stronger. Besides, the first oscillation wakefield behind the bunch is particularly stronger than others. Moreover, it is found that the stationary stopping power increases linearly with the increase of the beam density in the linear/semilinear region.

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Corresponding author

Address correspondence and reprint requests to: Xin Qi and Lei Yang, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and Joint Laboratory of Atomic and Molecular Physics of NWNU & IMP CAS, Northwest Normal University, Lanzhou 730070, China. E-mail: qixin2002@impcas.ac.cn, lyang@impcas.ac.cn

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