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Chin. Phys. B, 2012, Vol. 21(5): 055207    DOI: 10.1088/1674-1056/21/5/055207
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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
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.
Keywords:  relativistic electrons      gold cone      guiding laser      electron temperature  
Received:  05 September 2011      Revised:  27 April 2012      Accepted manuscript online: 
PACS:  52.57.-z (Laser inertial confinement)  
  52.38.-r (Laser-plasma interactions)  
  41.75.-i (Charged-particle beams)  
Fund: 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.

Cite this article: 

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 2012 Chin. Phys. B 21 055207

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