Acceleration and guiding of fast electrons by a nanobrush target

作者：Zhao, Zongqing^*; Cao, Lihua; Cao, Leifeng; Wang, Jian; Huang, Wenzhong; Jiang, Wei; He, Yingling; Wu, Yuchi; Zhu, Bin; Dong, Kegong; Ding, Yongkun; Zhang, Baohan; Gu, Yuqiu; Yu, M. Y.; He, X. T.

来源：Physics of Plasmas, 2010, 17(12): 123108.

DOI：10.1063/1.3507292

• LASER-PRODUCED PLASMA
• X-RAY GENERATION
• IGNITION
• DENSITY

Laser interaction with a nanobrush target plasma is investigated at the SILEX-I laser facility [X. F. Wei et al., J. Phys. Conf. Ser. 112, 032010 (2008)] with a laser of intensity 7.9 X 10(18) W/cm(2). Highly collimated fast electron beams with yields of more than three times higher than that from the planar target can be produced. Two-dimensional particle-in-cell simulation confirms that a layered surface structure can increase the efficiency of laser energy absorption, and the resulting fast electrons are tightly collimated and guided by the plasma layers to a cross section of about the laser spot size.

• 出版日期2010-12
• 单位北京应用物理与计算数学研究所; 中国工程物理研究院; 浙江大学; 内江师范学院; 北京大学; 中国工程物理研究院激光聚变研究中心