【作者】 赵晓莹； 齐新； 杨磊；

【Author】 ZHAO Xiao-ying;QI Xin;YANG Lei;Institute of Modern Physics,Chinese Academy of Sciences;Department of Physics,Lanzhou University;

【机构】 中科院近代物理研究所； 兰州大学；

【摘要】 近年来,随着人们关注核聚变的研究,束团在等离子体中的传输得到越来越多的重视。本文利用二维PIC程序来模拟氢离子束团在氢等离子体中的传输,重点研究了束团在等离子体中的尾场和能量演化等性质。发现长束团在等离子体中传输时,会被自身的尾场截成周期分布的短束团。为了进一步研究尾场的影响,分别计算了短束团在均匀等离子体中和跟在被另一个束团扰动后形成尾场的等离子体中的能量演化。发现束团的能量演化与两个束团之间的距离及束团在尾场中的位置密切相关。更多还原

【Abstract】 We performed two-dimensional particle-in-cell simulations to investigate the propagation of proton beam pulses in plasmas.The stopping power and wake field of beam pulses are investigated.We found that the long proton beam is modulated in to periodic short beam pulses due to the wake field induced by the beam.In addition,we studied the influence of wake field induced by a beam pulse on a test beam pulse.It is found that the stopping power of the test beam pulse closely relates to the distance between the two beam pulses.更多还原