Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma

doi:10.1088/1674-1056/20/1/015206

中国物理B ›› 2011, Vol. 20 ›› Issue (1): 15206-015206.doi: 10.1088/1674-1056/20/1/015206

Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma

谢柏松¹, 吴海城¹, 艾米尔丁·艾米都拉¹, 赵学燕¹, 洪学仁², 张闪³, 刘明萍⁴

(1)College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China; (2)College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; (3)College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; (4)School of Inf

收稿日期:2010-06-18 修回日期:2010-07-12 出版日期:2011-01-15 发布日期:2011-01-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10875015, 10725521 and 10834008), and the National Basic Research Program of China (Grant No. 2006CB806004).

Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma

Zhang Shan(张闪)^a)b), Xie Bai-Song(谢柏松)^a)†, Hong Xue-Ren(洪学仁)^a)c), Wu Hai-Cheng(吴海城)^a), Aimierding Aimidula(艾米尔丁·艾米都拉)^a), Zhao Xue-Yan(赵学燕)^a), and Liu Ming-Ping(刘明萍)^d)

^a College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China; ^b Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; ^c College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; ^d School of Information Engineering, Nanchang University, Nanchang 330031, China

Received:2010-06-18 Revised:2010-07-12 Online:2011-01-15 Published:2011-01-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10875015, 10725521 and 10834008), and the National Basic Research Program of China (Grant No. 2006CB806004).

摘要/Abstract

摘要： In one-dimensional particle-in-cell simulations, this paper shows that the formation of multiple ion bunches is disadvantageous to the generation of monoenergetic ion beams and can be suppressed by choosing an optimum target thickness in the radiation pressure acceleration mechanism by a circularly polarised laser pulse. As the laser pulse becomes intense, the optimum target thickness obtained by a non-relativistic treatment is no longer adequate. Considering the relativistic Doppler-shifted pressure, it proposes a relativistic formulation to determine the optimum target thickness. The theoretical predictions agree with the simulation results well. The model is also valid for two-dimensional cases. The accelerated ion beams can be compelled to be more stable by choosing the optimum target thickness when they exhibit some unstable behaviours.

关键词: interaction of ultrastrong laser pulse and plasma, radiation pressure acceleration, optimum target thickness

Abstract: In one-dimensional particle-in-cell simulations, this paper shows that the formation of multiple ion bunches is disadvantageous to the generation of monoenergetic ion beams and can be suppressed by choosing an optimum target thickness in the radiation pressure acceleration mechanism by a circularly polarised laser pulse. As the laser pulse becomes intense, the optimum target thickness obtained by a non-relativistic treatment is no longer adequate. Considering the relativistic Doppler-shifted pressure, it proposes a relativistic formulation to determine the optimum target thickness. The theoretical predictions agree with the simulation results well. The model is also valid for two-dimensional cases. The accelerated ion beams can be compelled to be more stable by choosing the optimum target thickness when they exhibit some unstable behaviours.

Key words: interaction of ultrastrong laser pulse and plasma, radiation pressure acceleration, optimum target thickness

中图分类号: (Laser-plasma acceleration of electrons and ions)

52.38.Kd

52.65.Rr (Particle-in-cell method) 52.27.Ny (Relativistic plasmas)

张闪, 谢柏松, 洪学仁, 吴海城, 艾米尔丁·艾米都拉, 赵学燕, 刘明萍. Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma[J]. 中国物理B, 2011, 20(1): 15206-015206.

Zhang Shan(张闪), Xie Bai-Song(谢柏松), Hong Xue-Ren(洪学仁), Wu Hai-Cheng(吴海城), Aimierding Aimidula(艾米尔丁·艾米都拉), Zhao Xue-Yan(赵学燕), and Liu Ming-Ping(刘明萍). Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma[J]. Chin. Phys. B, 2011, 20(1): 15206-015206.

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Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma

Suppression of multiple ion bunches and generation of monoenergetic ion beams in laser foil-plasma

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