中国物理B ›› 2020, Vol. 29 ›› Issue (8): 84103-084103.doi: 10.1088/1674-1056/ab943d

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

Direct electron acceleration by chirped laser pulse in a cylindrical plasma channel

Yong-Nan Hu(胡永南), Li-Hong Cheng(成丽红), Zheng-Wei Yao(姚征伟), Xiao-Bo Zhang(张小波), Ai-Xia Zhang(张爱霞), Ju-Kui Xue(薛具奎)   

  1. 1 College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China;
    2 School of Science, Guizhou University of Engineering Science, Bijie 551700, China
  • 收稿日期:2019-12-04 修回日期:2020-05-15 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Ju-Kui Xue E-mail:xuejk@nwnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11865014, 11765017, 11764039, 11475027, 11274255, and 11305132), the Natural Science Foundation of Gansu Province of China (Grant No. 17JR5RA076), the Scientific Research Project of Gansu Higher Education of China (Grant No. 2016A-005), the Natural Science Foundation of Education Department of Guizhou Province of China (Grant No. Qianjiaohe-KY-[2017]301), and the Science and Technology Project of Guizhou Province of China (Grant No. Qiankehe-LH-[2017]7008).

Direct electron acceleration by chirped laser pulse in a cylindrical plasma channel

Yong-Nan Hu(胡永南)1, Li-Hong Cheng(成丽红)2, Zheng-Wei Yao(姚征伟)1, Xiao-Bo Zhang(张小波)1, Ai-Xia Zhang(张爱霞)1, Ju-Kui Xue(薛具奎)1   

  1. 1 College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China;
    2 School of Science, Guizhou University of Engineering Science, Bijie 551700, China
  • Received:2019-12-04 Revised:2020-05-15 Online:2020-08-05 Published:2020-08-05
  • Contact: Ju-Kui Xue E-mail:xuejk@nwnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11865014, 11765017, 11764039, 11475027, 11274255, and 11305132), the Natural Science Foundation of Gansu Province of China (Grant No. 17JR5RA076), the Scientific Research Project of Gansu Higher Education of China (Grant No. 2016A-005), the Natural Science Foundation of Education Department of Guizhou Province of China (Grant No. Qianjiaohe-KY-[2017]301), and the Science and Technology Project of Guizhou Province of China (Grant No. Qiankehe-LH-[2017]7008).

摘要: We study the dynamics of single electron in an inhomogeneous cylindrical plasma channel during the direct acceleration by linearly polarized chirped laser pulse. By adjusting the parameters of the chirped laser pulse and the plasma channel, we obtain the energy gain, trajectory, dephasing rate and unstable threshold of electron oscillation in the channel. The influences of the chirped factor and inhomogeneous plasma density distribution on the electron dynamics are discussed in depth. We find that the nonlinearly chirped laser pulse and the inhomogeneous plasma channel have strong coupled influence on the electron dynamics. The electron energy gain can be enhanced, the instability threshold of the electron oscillation can be lowered, and the acceleration length can be shortened by chirped laser, while the inhomogeneity of the plasma channel can reduce the amplitude of the chirped laser.

关键词: chirped laser pulse, plasma channel, laser-plasma interaction, electron acceleration

Abstract: We study the dynamics of single electron in an inhomogeneous cylindrical plasma channel during the direct acceleration by linearly polarized chirped laser pulse. By adjusting the parameters of the chirped laser pulse and the plasma channel, we obtain the energy gain, trajectory, dephasing rate and unstable threshold of electron oscillation in the channel. The influences of the chirped factor and inhomogeneous plasma density distribution on the electron dynamics are discussed in depth. We find that the nonlinearly chirped laser pulse and the inhomogeneous plasma channel have strong coupled influence on the electron dynamics. The electron energy gain can be enhanced, the instability threshold of the electron oscillation can be lowered, and the acceleration length can be shortened by chirped laser, while the inhomogeneity of the plasma channel can reduce the amplitude of the chirped laser.

Key words: chirped laser pulse, plasma channel, laser-plasma interaction, electron acceleration

中图分类号:  (Laser-driven acceleration?)

  • 41.75.Jv
52.38.Kd (Laser-plasma acceleration of electrons and ions) 52.27.Ny (Relativistic plasmas) 52.38.Hb (Self-focussing, channeling, and filamentation in plasmas)