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更多〉〉相关学者何斌颜君王建国刘春雷宁烨张东海王琦宁烨魏德明邵凤兰相关检索词磁场 场强 碰撞 电场 蒙特卡罗方法 峰值 经典 纵向 蒙特卡罗 呈现 截面 电离 微分 单调 磁场强度 积分 粒子 事例 强磁场 magnetic field 强磁场下He2＋＋H（1s）的碰撞电离微分截面及电离机理研究
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：O562.5[理学—原子与分子物理;理学—物理]
  • 作者机构：[1]陕西师范大学物理学与信息技术学院,理论与计算物理研究所.西安710062, [2]北京应用物理与计算数学研究所高能量密度物性数据中心,北京100088
  • 相关基金：国家自然科学基金委员会与中国工程物理研究院联合基金（批准号：10976016）和国家自然科学基金（批准号：11025417,10974021,10979007,11104017）资助的课题
作者： 丁丁[1], 何斌[2], 屈世显[1], 王建国[2]
关键词： 重粒子碰撞, 经典蒙特卡罗模拟, 强磁场, 碰撞电离, heavy-particle collision, classical trajectory Monte Carlo method, strong magnetic field, impact ionization
中文摘要：

应用经典径迹蒙特卡罗方法详细研究了强磁场环境下He2＋＋H （1s）的重粒子碰撞电离过程.首先得到了在不同强度的纵向和横向磁场下电离电子的一阶能量微分截面,发现它们不仅在数值上比未加磁场下的结果有明显的增加,而且随电离电子的能量变化不再是单调下降,而是呈现一定的峰值结构.通过对电离事例的分析,解释了这些变化形成的原因.其次由于强磁场会导致碰撞电离的物理机理有很大变化,因此也分析并解释了磁场强度、方向及入射粒子能量等因素对电离机理的影响行为.

英文摘要：

The ionization processes in collisions of H （1s） atoms with He2＋are studied by the classical trajectory Monte Carlo method. The first-order differential cross sections for ionization are calculated for different field strengths of both transverse and parallel magnetic field, and they increase obviously with the fields applied. Instead of monotonic decline, a peak appears for the differential cross section, with the fields applied. According to the analysis of trajectories, the ionization mechanisms become quite different. In this paper, the influences the strength and direction of the applied field including the incident energy on the ionization mechanisms are also explained.

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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876