论文标题
X射线成像和辐射传输对圆柱内爆的影响
X-ray imaging and radiation transport effects on cylindrical implosions
论文作者
论文摘要
惯性限制内爆的磁化是一种有前途的方法，可以改善其性能，这是由于目标内部能量损失的潜在减少和减轻水力动力学不稳定性的可能性。特别是，圆柱内爆可用于研究磁场的轴向对称性的影响。在这里，我们使用40梁，14.5 kJ，1.5 ns驱动器和沿目标轴的B0 = 24 t的初始种子磁场在omega-60激光器上的圆柱内爆的实验结果，与没有施加B型的参考结果相比。使用来自两条正交线的时间分辨X射线成像来表征内爆的表征。我们发现，一旦考虑了爆内型等离子体中的辐射传输，数据与磁流失动力学模拟非常吻合。我们表明，要正确解释这种实验中数据的正确解释，必须考虑明确的辐射传输。
Magnetization of inertial confinement implosions is a promising means of improving their performance, owing to the potential reduction of energy losses within the target and mitigation of hydrodynamic instabilities. In particular, cylindrical implosions are useful for studying the influence of a magnetic field thanks to their axial symmetry. Here we present experimental results from cylindrical implosions on the OMEGA-60 laser using a 40-beam, 14.5 kJ, 1.5 ns drive and an initial seed magnetic field of B0=24 T along the axis of the targets, compared with reference results without an imposed B-field. Implosions were characterized using time-resolved X-ray imaging from two orthogonal lines of sight. We found that the data agree well with magnetohydrodynamic simulations once radiation transport within the imploding plasma is considered. We show that for a correct interpretation of the data in this type of experiments, explicit radiation transport must be taken into account.
