• High Power Laser Science and Engineering
  • Vol. 3, Issue 1, 01000e10 (2015)
Kazuhisa Nakajima, Hyung Taek Kim, Tae Moon Jeong, and and Chang Hee Nam
Author Affiliations
  • Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 500-712, Korea
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    A comparison of measured electron beam energies in laser wakefield acceleration with the energy scaling as a function of the operating plasma density for (a) the self-guided case in the bubble regime at laser wavelengths of 800 nm (solid line) and 1057 nm (dashed line) and (b) the channel-guided case in both the quasi-linear regime (dashed line) and the bubble regime (solid line). The experimental data are plotted with filled squares for and the open square for in (a), and with filled circles for in (b).
    Fig. 1. A comparison of measured electron beam energies in laser wakefield acceleration with the energy scaling as a function of the operating plasma density for (a) the self-guided case in the bubble regime at laser wavelengths of 800 nm (solid line) and 1057 nm (dashed line) and (b) the channel-guided case in both the quasi-linear regime (dashed line) and the bubble regime (solid line). The experimental data are plotted with filled squares for and the open square for in (a), and with filled circles for in (b).
    Electron beam energy spectra obtained from the experiment[6], where a 212-TW, 60-fs laser pulse is focused on a spot radius of producing at the entrance of a gas jet for three cases consisting of (a) a 4-mm long single stage with , (b) a 10-mm long single stage with and (c) two stages comprising a 4-mm long injector with and a 10-mm long accelerator with .
    Fig. 2. Electron beam energy spectra obtained from the experiment[6], where a 212-TW, 60-fs laser pulse is focused on a spot radius of producing at the entrance of a gas jet for three cases consisting of (a) a 4-mm long single stage with , (b) a 10-mm long single stage with and (c) two stages comprising a 4-mm long injector with and a 10-mm long accelerator with .
    Ref.
    (%)(mm)(TW)(fs)(GeV)(%)
    [51]5.708.71823519553.90.812
    [52]308656.615602.80.7214
    [3]1.30131104.915603.81.45100
    [11]5.7  2.50 3453.816402.30.825
    [12]30 5404.115602.30.465
    [5]0.4806762518501603210
    [6]2.1042121521603.70.3525
    [6]1.3010212821603.70.8730
    [6] 0.80 102125.821603.7330
    [2]4.3533405.825371.415.9
    [2]3.5533121.425800.750.513
    [8]8.4515185.123420.840.52.5
    [7]1.9540241.5517271.70.562.8
    [53]1.8530321.9622801.40.525
    [4]3.154013013.7215531.850
    Table 1. Parameters of experiments on GeV-class laser wakefield acceleration.
    CaseABCDRef. [16]
     (GeV)1010104038
    1.92.71.10.280.22
    0550
    0.380.420.874.75
    800800800800800
    321.522
    1.351.131.061.19
    2.32.93.63.2
    292957103100
    12895127238160
    23811425014831400
    1.51.10.911.31.04
    301132353220
    160160160300300
    C0.5960.9450.9891.05
    0.770.680.670.79
    Table 2. Design parameters for 10-GeV-level laser plasma accelerators in comparison with the results of the 3D PIC simulation[16]. Case A stands for the self-guided case in the bubble regime, designed by the formulas given in Section 4.1, case B for the self-guided case in the bubble regime, designed by the formulas given in Section 4.2, case C for the channel-guided case in the quasi-linear regime, designed by the formulas given in Section 4.3, and case D for the self-guided case in the bubble regime at 40 GeV, designed by the formulas given in Section 4.1.
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    Kazuhisa Nakajima, Hyung Taek Kim, Tae Moon Jeong, and Chang Hee Nam. Scaling and design of high-energy laser plasma electron acceleration[J]. High Power Laser Science and Engineering, 2015, 3(1): 01000e10
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    Category: regular articles
    Received: Feb. 19, 2014
    Accepted: Aug. 25, 2014
    Published Online: Apr. 14, 2015
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