Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator
Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator
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DOI：
10.1088/1361-6587/aab3b5
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发表时间：
2018-05-01
影响因子：
2.2
通讯作者：
Joshi, C.
中科院分区：
文献类型：
--
作者：
Lemos, N.;Albert, F.;Joshi, C.
利用自调制激光韦克菲尔德加速器（SM-LWFA）产生的电子束产生的X射线源被探索用于高能量密度科学设施。通过使来自由lps 120 J激光器驱动的SM-LWFA的最大能量为380 MeV、总电荷> 10 nC且发散度为64 X 100 mrad的电子束碰撞到高Z箔中，产生X/γ射线源。与其他计划相比，使用LWFA宽带韧致辐射能谱的温度范围从0.8到2 MeV的测量与几乎2个数量级的通量增加。GEANT 4模拟计算了源的大小和发散度。
An x-ray source generated by an electron beam produced using a Self-Modulated Laser Wakefield Accelerator (SM-LWFA) is explored for use in high energy density science facilities. By colliding the electron beam, with a maximum energy of 380 MeV, total charge of > 10 nC and a divergence of 64 x 100 mrad, from a SM-LWFA driven by a 1 ps 120 J laser, into a high-Z foil, an x/gamma-ray source was generated. A broadband bremsstrahlung energy spectrum with temperatures ranging from 0.8 to 2 MeV was measured with an almost 2 orders of magnitude flux increase when compared with other schemes using LWFA. GEANT4 simulations were done to calculate the source size and divergence.