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强激光与细锥靶相互作用产生强流高能电子束的研究

穆洁 盛政明 郑君 张杰

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强激光与细锥靶相互作用产生强流高能电子束的研究

穆洁, 盛政明, 郑君, 张杰

Numerical studies on intense laser-generated relativistic high-energy electrons via a thin cone target

Mu Jie, Sheng Zheng-Ming, Zheng Jun, Zhang Jie
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  • 本文提出采用了强激光与细锥形靶作用, 产生大量定向高能电子, 用于快点火激光聚变方案研究. 通过PIC 模拟, 研究了细锥靶和激光脉冲的各项参数, 对产生高能电子的影响. 模拟发现, 细锥靶开口10° 时能够产生较多的高能电子, 当开口角度逐渐增大时, 高能电子的能量和数目都有一定程度下降. 若为细锥靶加上预等离子体, 产生的高能电子的数目将大大提高, 而最高的电子能量将会下降. 中等能量的电子加速主要由于激光有质动力加速, 而高能量的电子加速主要由于电子感应加速. 随着激光脉宽的增加, 高能电子的数量直线上升.
    It is proposed that with a mini-cone target, an enormous number of high-energy collimated electrons can be produced, which may be used for fast ignition research. The effect of different laser and cone target diameters on high-energy electrons are studied with two-dimensional particle-in-cell simulations. When the open angle of the mini-cone is 10 degree, the number of generated hot electrons is relatively larger. With the increase of the open angle, both the energy and number of hot electrons decrease. When preplasma is added to the cone surface, the amount of hot electrons increases, while the peak energy of the hot electrons decreases. With the increase of the laser pulse duration, the number of high-energy electrons increases linearly.
    • 基金项目: 国家自然科学基金(批准号: 11075105, 11121504, 10905039)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11075105, 11121504, 10905039).
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  • [1]

    Sentoku Y, Mima K,Sheng Z M, Kaw P, Nishihara K, Nishikawa K 2002 Phys. Rev. E 65 046408

    [2]

    Mangles S P D, Murphy C D, Najmudin Z, Thomas A G R, Collier J L, Dangor A E, Divall E J, Foster P S, Gallacher J G, Hooker C J,Jaroszynski D A,Langley A J, Mori W B, Norreys P A, Tsung F S, Viskup R, Walton B R, Krushelnick K 2004 Nature 431 535

    [3]

    Kodama R, Shiraga H, Shigemori K, Toyama Y, Fujioka S, Azechi H, Fujita H,Habara H,Hall T, Izawa Y, Jitsuno T, Kitagawa Y, Krushelnick K M, Lancaster K L, Mima K, Nagai K, Nakai M, Nishimura H, Norimatsu T, Norreys P A, Sakabe S, Tanaka K A, Youssef A, Zepf M, Yamanaka T 2002 Nature 418 933

    [4]

    Yin Y, Chang W W, Ma Y Y, Yue Z W, Cao L H 2002 Chin. Phys. Lett. 19 368

    [5]

    Cai H B, Mima K, Zhou W M, Jozaki T, Nagatomo H, Sunahara A, Mason R J 2009 Phys. Rev. Lett. 102 245001

    [6]

    Kruer W L 1985 Phys. Fluids 28 430

    [7]

    Brunel F 1987 Phys.Rev.Lett 59 52

    [8]

    Estabrook K G 1975 Phys. Rev. A 11 679

    [9]

    Pukhov A, Sheng Z M, Mayer-ter-Vehn J 1999 Phys. Plasmas 6 2847

    [10]

    Liu Z J, Zheng C Y, Cao L H, Li B, Zhu S P 2006 Acta Phys. Sin. 55 0304 (in Chinese) [刘占军, 郑春阳, 曹莉华, 李斌, 朱少平 2006 物理学报 55 0304]

    [11]

    Sentoku Y, Mima K, Ruhl H, Toyama Y, Kodama R, Cowan T E 2004 Phys. Plasmas 11 3083

    [12]

    Liu F, Liu X X, Liu B C, Ding W J, Du F 2012 Phys. Plasmas 19 013103

    [13]

    Li Y T, Yuan X H, Xu M H, Zheng Z Y, Sheng Z M, Chen M, Ma Y Y, Liang W X, Yu Q Z, Zhang Y, Liu F, Wang Z H, Wei Z Y, Zhao W, Jin Z, Zhang J 2006 Phys. Rev. Lett. 96 165003

    [14]

    Chen M, Sheng Z M, Zheng J, Zhang J 2006 Acta Phys.Sin. 55 2381 (in Chinese) [陈民, 盛政明, 郑君, 张杰 2006 物理学报 55 2381]

    [15]

    Zheng J, Sheng Z M, Liu J L, Zhou W M, Xu H, Zhang J 2011 Phys. Plasmas 13 113103

    [16]

    Yang X Q, Lei A L, Yu W, Tanaka K 2008 Chin. Phys. Lett. 25 2151

    [17]

    Ma Y Y, Sheng Z M, Li Y T, Chang W W, Yuan X H, Chen M, Wu H C,Zheng J, Zhang J 2006 Phys. Plasmas 13 110702

    [18]

    Liu C S, Tripathi V K 2005 Phys. Plasmas 12 043103

    [19]

    Dong X G, Sheng Z M, Chen M, Zhang J 2008 Acta Phys. Sin. 57 7423 (in Chinese) [董晓刚, 盛政明, 陈民, 张杰 2008 物理学报 57 7423]

    [20]

    Chen M, Sheng Z M, Zheng J, Ma Y Y, Bari M A, Li Y T, Zhang J 2006 Opt. Express 14 3093

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  • PDF下载量:  397
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-07-09
  • 修回日期:  2013-02-16
  • 刊出日期:  2013-07-05

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