Compression phase study of the HiPER baseline target
Compression phase study of the HiPER baseline target
复制标题
DOI：
10.1088/0741-3335/50/2/025007
复制
发表时间：
2008-01
影响因子：
2.2
通讯作者：
X. Ribeyre;P. Nicolaï;G. Schurtz;M. Olazabal-Loumé;J. Breil;P. Maire;J. Feugeas;L. Hallo;V. Tikhonchuk
中科院分区：
文献类型：
--
作者：
X. Ribeyre;P. Nicolaï;G. Schurtz;M. Olazabal-Loumé;J. Breil;P. Maire;J. Feugeas;L. Hallo;V. Tikhonchuk
欧洲高功率激光能量研究项目旨在证明使用快速点火器方法进行高增益惯性约束聚变的可行性。Atzeni等人（2007 Phys. Plasmas 14 052702）最近开发了基线目标。我们在这里研究的鲁棒性，这个目标在压缩阶段，并定义一个成功的燃料组件的脉冲形状公差。一个标准和弛豫脉冲之间的比较表明，后者允许一个既减少激光功率对比度和增长的扰动由于瑞利-泰勒不稳定性。我们已经发现，在吸收95 kJ的激光能量的情况下，可以组装出峰值密度约为500 g cm−2、峰值面密度为1.2 g cm−2的燃料。这意味着总目标增益约为60。
The European High Power laser Energy Research (HiPER) project aims at demonstrating the feasibility of high gain inertial confinement fusion using the fast ignitor approach. A baseline target has been recently developed by Atzeni et al (2007 Phys. Plasmas 14 052702). We study here the robustness of this target during the compression phase and define pulse shape tolerances for a successful fuel assembly. The comparison between a standard and a relaxation pulse shows that the latter allows one to reduce both the laser power contrast and the growth of perturbations due to Rayleigh–Taylor instability. We have found that with 95 kJ of absorbed laser energy one can assemble the fuel with a peak density around 500 g cm−2 and a peak areal density of 1.2 g cm−2. This implies a total target gain of about 60.