激光-等离子体相互作用正电子发射研究进展

蔡达锋; 王剑; 谷渝秋; 郑志坚

doi:10.11884/HPLPB202335.220189

激光-等离子体相互作用正电子发射研究进展

doi: 10.11884/HPLPB202335.220189

1.
内江师范学院物理与电子信息工程学院，四川内江 641112
2.
中国工程物理研究院激光聚变研究中心，四川绵阳 621900

详细信息

作者简介:
蔡达锋，dafeng_cai@aliyun.com

中图分类号: O434.12
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- 文章访问数: 511
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- 被引次数: 0
出版历程
- 收稿日期: 2022-06-06
- 修回日期: 2023-01-03
- 录用日期: 2023-03-27
- 网络出版日期: 2023-03-30
- 刊出日期: 2023-06-15

Research evolution of the positron jet generated by intense laser interaction with the plasmas

1.
College of Physics and Electronic Information Engineering, Neijiang Normal College, Neijiang 641112, China
2.
Laser Fusion Research Center, CAEP, Mianyang 621900, China

摘要

摘要:
介绍了激光-等离子体相互作用产生正电子的相关实验和数值模拟研究进展。简要回顾了激光-等离子体相互作用正电子的发现过程及激光-等离子体作用产生正电子的三种物理机制；详细地叙述了激光与物质相互作用产生正电子的两类典型实验方式（即直接方式和间接方式）及相关的实验和数值模拟结果；对激光-等离子体相互作用产生正电子的研究进行了评述。从现有研究进展来看，目前理论研究和实验研究所获结论差异较大，还需要从激光设备、实验方案设计以及理论和模拟研究方面做大量细致的工作。
- 激光-等离子体 /
- 正电子产生 /
- 量子电动力学效应
Abstract:
The history and development about the study of positrons generated by intense laser interaction with the plasmas are introduced. The mechanisms of the positron generation are presented. Specially, the typical experiment scheme (direct and indirect) of the positron generation, including important results about the experiment and computer simulation are described systemically. Eventually, the study of positron is reviewed and summarized. At present, the conclusions obtained from theoretical research and experimental research are quite different, and a lot of detailed work needs to be done in terms of laser equipment, experimental scheme design, and theoretical and simulation research.
- laser-plasmas /
- positron generation /
- quantum electrodynamics effect

HTML全文

图 1 实验设置^[2]

Figure 1. Experimental arrangement^[2]

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图 2 实验设置示意图(直接方式)^[5]

Figure 2. Experimental setup (direct). The locations of two spectrometers relative to the lasers and target are marked^[5]

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图 3 电子和正电子能谱^[5]

Figure 3. Energy spectra of electrons and positrons^[5]

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图 4 实验设置(直接方式)^[6]

Figure 4. Experimental setup (direct)^[6]

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图 5 正电子能量分布^[6]

Figure 5. Positron energy distributions beled from A to F. Experimental setup^[6]

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图 6 正电子角分布^[6]

Figure 6. Positron angles distributions^[6]

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图 7 实验设置(间接方式)^[4]

Figure 7. Experimental setup (indirect)^[4]

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图 8 电子和正电子能谱^[4]

Figure 8. Electron and positron energy distributions^[4]

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图 9 实验原理图^[8]

Figure 9. Scheme figure of the experiment^[8]

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图 10 实验和模拟的正电子能谱^[8]

Figure 10. Experimental (solid lines) and simulated (dashed lines) positron spectra^[8]

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图 11 激光产生正电子的两种方案示意图^[7]

Figure 11. Illustration of two laser-positron generation schemes^[7]

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参考文献(16)

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