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首页> 外文期刊>Plasma physics and controlled fusion >Characteristics of electron beam in laser wakefield accelerator using pure nitrogen gas
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Characteristics of electron beam in laser wakefield accelerator using pure nitrogen gas

机译：纯氮气激光韦克菲尔德促进剂电子束的特性

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摘要

Pure nitrogen gas target and a 10 TW laser were used to accelerate electrons by a laser wakefield acceleration. A well collimated with stable pointing electron beam was generated. When the density was 9.4 x 10(18) cm(-3), electron beams with divergences 5.2 +/- 1.2 mrad in horizontal and 4.2 +/- 0.8 mrad in the vertical directions were generated. The electron peak energy was 117 +/- 12 MeV which is close to the expected value by the scaling formula. The tendency of the maximum energy and energy distribution changes with different density shows that electrons were accelerated to dephasing length with high density and acceleration distance was less than the dephasing length with low density. From this, it seems that the length of the plasma for deformation of the laser is required for the ionization injection, and the plasma length should be longer than the dephasing length.
机译：纯氮气靶和10W激光器用于通过激光唤醒加速加速电子。 产生与稳定的指向电子束的良好准直。 当密度为9.4×10（18）厘米（-3）时，产生的电子束5.2 +/- 1.2 mrad在水平和4.2 +/- 0.8 mrad中垂直方向。 电子峰值能量为117 +/- 12 MeV，缩放公式接近预期值。 具有不同密度的最大能量和能量分布变化的趋势表明，电子被加速到具有高密度的脱离长度，并且加速距离小于具有低密度的去除长度。 由此，似乎需要电离喷射所需激光等离子体的长度，等离子体长度应长于去除长度。

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