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利用光核反应对激光等离子体中超热电子温度诊断的理论研究
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：TL632.1[核科学技术—核技术及应用]
  • 作者机构：[1]山东师范大学物理与电子科学学院,济南250014, [2]中国科学院物理研究所北京凝聚态物理国家实验室,光物理重点实验室,北京100190
  • 相关基金：国家自然科学基金（批准号：11075203,10925421,10974249）资助的课题.
作者： 赵家瑞[1,2], 于全芝, 梁天骄, 陈黎明, 李玉同, 国承山[1]
关键词： 超热电子, 轫致辐射光子, 光核反应, MCNP程序, hot electron, bremsstrahlung photon, photonuclear reaction, MCNP
中文摘要：

超短超强激光与等离子体相互作用可以产生高能的超热电子, 利用光核反应的方法可以对这部分超热电子的温度进行诊断. 本文通过粒子输运程序（MCNP）, 模拟了超热电子通过轫致辐射产生γ 光子, γ 光子再分别与63Cu, 107Ag, 12C等活化材料发生光核反应的物理模型, 并根据核素的活化截面数据, 计算了不同活化片的放射性活度, 得到了11C/62Cu, 11C/106Ag活度比与电子温度关系曲线, 采用理论模拟的方法实现了激光等离子体产生的超热电子的温度诊断.

英文摘要：

The temperature of hot electrons produced in ultra-short ultra-intense laser-plasma interactions could be measured by photonuclear diagnostic method. In this paper, the process of bremsstrahlung gamma photons generated by hot electrons interacting separately with 63Cu, 107Ag, and 12C, were simulated using the Monte Carlo N-particle transport code （MCNP）. According to the different cross-sections, the activities of different samples were calculated. The activity ratios for 11C/62Cu and11C/106Ag were achieved at different electron temperatures. This method can realize the temperature diagnostic of hot electrons in laser-plasma interactions.

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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