论文标题
QED在放牧发生率对固态目标的效果
QED Effects at Grazing Incidence on Solid-State-Targets
论文作者
论文摘要
新的激光功能将达到$ 10^{23} \ textrm {w cm}^{ - 2} $的强度。这一进步使新的实验设置在激光 - 血浆相互作用的研究中。在这些具有极端场量子动力学（QED）效果的设置中，例如通过非线性康普顿散射和Breit-wheeler对产生的光子发射变得很重要。 我们研究了具有二维粒子中的模拟，其中包括QED效果，从而研究了高强度激光器对固态靶标的表面进行放牧。两个激光梁以放牧角在目标表面碰撞。由于目标表面电子附近的磁场，并加速了。最后，提取的电子与反向传播的激光碰撞，这会触发许多QED效应，并在足够的激光强度下导致QED级联反应。在这里，研究了各种激光强度和入射角的过程，最后与种子真空级联相比。我们的结果表明，所提出的目标可以产生许多数量级的二次颗粒，并在较低的激光强度下与单独的种子真空产生QED级联反应。
New laser facilities will reach intensities of $10^{23} \textrm{W cm}^{-2}$. This advance enables novel experimental setups in the study of laser-plasma interaction. In these setups with extreme fields quantum electrodynamic (QED) effects like photon emission via non-linear Compton scattering and Breit-Wheeler pair production become important. We study high-intensity lasers grazing the surface of a solid-state target by two-dimensional particle-in-cell simulations with QED effects included. The two laser beams collide at the target surface at a grazing angle. Due to the fields near the target surface electrons are extracted and accelerated. Finally, the extracted electrons collide with the counter-propagating laser, which triggers many QED effects and leads to a QED cascade under a sufficient laser intensity. Here, the processes are studied for various laser intensities and angles of incidence and finally compared to a seeded vacuum cascade. Our results show that the proposed target can yield many order of magnitude more secondary particles and develop a QED cascade at lower laser intensities than the seeded vacuum alone.
