Characterization of relativistic electrons generated by a cone guiding laser pulse

doi:10.1088/1674-1056/21/5/055207

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 55207-055207.doi: 10.1088/1674-1056/21/5/055207

Characterization of relativistic electrons generated by a cone guiding laser pulse

刘红杰¹ ²,谷渝秋¹ ²,周维民¹,余金清¹,朱斌¹,吴玉迟¹,单连强¹,温贤伦¹,李芳¹,钱凤¹ ³,曹磊峰¹ ²,张保汉¹ ²,郑志坚¹ ²

1. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China;
2. National Key Laboratory of Plasma Physics, Mianyang 621900, China;
3. College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China

收稿日期:2011-09-05 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10975121 and 11174259) and the Foundation of National Key Laboratory of Plasma Physics.

Characterization of relativistic electrons generated by a cone guiding laser pulse

Liu Hong-Jie(刘红杰)^a)b), Gu Yu-Qiu(谷渝秋)^a)b)†, Zhou Wei-Min(周维民)^a), Yu Jin-Qing(余金清)^a), Zhu Bin(朱斌)^a), Wu Yu-Chi(吴玉迟)^a), Shan Lian-Qiang(单连强)^a), Wen Xian-Lun(温贤伦)^a), Li Fang(李芳)^a), Qian Feng(钱凤)^a)c), Cao Lei-Feng(曹磊峰)^a)b), Zhang Bao-Han(张保汉)^a)b), and Zheng Zhi-Jian(郑志坚)^a)b)

a. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China;
b. National Key Laboratory of Plasma Physics, Mianyang 621900, China;
c. College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China

Received:2011-09-05 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10975121 and 11174259) and the Foundation of National Key Laboratory of Plasma Physics.

摘要/Abstract

摘要： We demonstrated the interaction of a gold cone target with a femto second (fs) laser pulse above the relativistic intensity of 1.37× 10¹⁸ μm ²W/cm². Relativistic electrons with energy above 2 MeV were observed. A 25%--40% increase of the electron temperature is achieved compared to the case when a plane gold target is used. The electron temperature increase results from the guiding of the laser beam at the tip and the intense quasistatic magnetic field in the cone geometry. The behavior of the relativistic electrons is verified in our 2D-PIC simulations.

关键词: relativistic electrons, gold cone, guiding laser, electron temperature

Abstract: We demonstrated the interaction of a gold cone target with a femto second (fs) laser pulse above the relativistic intensity of 1.37× 10¹⁸ μm ²W/cm². Relativistic electrons with energy above 2 MeV were observed. A 25%--40% increase of the electron temperature is achieved compared to the case when a plane gold target is used. The electron temperature increase results from the guiding of the laser beam at the tip and the intense quasistatic magnetic field in the cone geometry. The behavior of the relativistic electrons is verified in our 2D-PIC simulations.

Key words: relativistic electrons, gold cone, guiding laser, electron temperature

中图分类号: (Laser inertial confinement)

52.57.-z

52.38.-r (Laser-plasma interactions) 41.75.-i (Charged-particle beams)

刘红杰, 谷渝秋, 周维民, 余金清, 朱斌, 吴玉迟, 单连强, 温贤伦, 李芳, 钱凤, 曹磊峰, 张保汉, 郑志坚. Characterization of relativistic electrons generated by a cone guiding laser pulse[J]. 中国物理B, 2012, 21(5): 55207-055207.

Liu Hong-Jie(刘红杰), Gu Yu-Qiu(谷渝秋), Zhou Wei-Min(周维民), Yu Jin-Qing(余金清), Zhu Bin(朱斌), Wu Yu-Chi(吴玉迟), Shan Lian-Qiang(单连强), Wen Xian-Lun(温贤伦), Li Fang(李芳), Qian Feng(钱凤), Cao Lei-Feng(曹磊峰), Zhang Bao-Han(张保汉), and Zheng Zhi-Jian(郑志坚) . Characterization of relativistic electrons generated by a cone guiding laser pulse[J]. Chin. Phys. B, 2012, 21(5): 55207-055207.

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Characterization of relativistic electrons generated by a cone guiding laser pulse

Characterization of relativistic electrons generated by a cone guiding laser pulse

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