论文标题
通过在锥靶上辐射强烈激光，对明亮的Attosent $γ$ ray源产生的仿真研究
Simulation study of a bright attosecond $γ$-ray source generation by irradiating an intense laser on a cone target
论文作者
论文摘要
Ultrastrong激光器与锥状靶标之间的相互作用是一种有效的方法，可以产生高功率辐射，例如Attosond脉冲和Terahertz波。该目的是在2D粒子中模拟的帮助下研究这种配置下的$γ$ ray生成。解密的是，电子经历了三个阶段，包括注射，加速度和散射，通过非线性康普顿散射（NCS）散发高能光子。这些空间分离的attosent $γ$ ray脉冲具有高峰值光彩（$> 10^{22} $光子/（$ \ rm s \ cdot \ cdot \ rm mm^2 \ cdot \ cdot \ rm mrad^2 \ cdot0.1.1.1 \％bw $）和高能量（6meev $ a_ 0） （$ \ mathrm {i = 2 \ times10^{21} w/cm^2} $）。此外，与平面相比，锥目标证明是能量传递效率更高的数量级。
The interaction between an ultrastrong laser and a cone-like target is an efficient approach to generate high power radiations like attosecond pulses and terahertz waves. The object is to study the $γ$-ray generation under this configuration with the help of 2D particle-in-cell simulations. It is deciphered that electrons experience three stages including injection, acceleration and scattering to emit high energy photons via nonlinear compton scattering (NCS). These spatial-separated attosecond $γ$-ray pulses own high peak brilliance ($>10^{22}$ photons/($\rm s\cdot\rm mm^2\cdot\rm mrad^2\cdot0.1\%BW$)) and high energy (6MeV) under the case of normalized laser intensity $a_0=30$ ($\mathrm{I=2\times10^{21}W/cm^2}$). Besides, the cone target turns out to be an order of magnitude more efficient in energy transfer compared with a planar one.
