Research on Ion Inertial Fusion Driver for High Energy Density Compression

利用线阵掐放产生强x射线及其在惯性聚变能研究中的应用是脉冲功率科学中最新的研究课题之一。相反，在强光离子聚变实验中，由于光离子束固有的电荷抑制了紧密聚焦，我们需要努力提高聚焦能力。同样在重离子聚变研究中，我们需要将离子束电流提高到目前水平的2 ~ 3个数量级以上。在此基础上，本课题拟对快速夹夹融合的关键问题进行研究，并展望新的研究方向。同时，我们计划研究使用中重离子聚变的可能性。这意味着我们计划证明与其他能量驱动相比，中重离子驱动如何适合惯性聚变。我们收集并再次检查了日本横滨东京工业大学和美国阿尔伯克基桑迪亚国家实验室的脉冲离子二极管的所有可能数据。我们用我们的离子二极管提取了N+离子，包括少量的O+。这些都是典型的中重离子，我们测量了光束在阳极表面的微发散角作为沿阳极半径距离的函数。我们可以获得较小的发散角，这对我们进一步开发这种中重离子驱动器来说是足够合理的。设计了一种新型的低温阳极二极管，以继续类似的实验，并增加了光束功率。本课题的相关研究课题是强脉冲离子束与x射线相互作用下烧蚀表面厚度的估算。前者主要是通过实验完成的，后者主要是通过简单的计算完成的。讨论了空间再入飞行器的弓形激波烧蚀，以及激光在离子二极管主动阳极等离子体生产中的发展和应用。少

One of the most up-to-date research topics in the pulsed power sciences is the generation1of intense X-rays with the wire-arrayed pinch discharge and the application of the X-ray to the inertial fusion energy research. On the contrary, we need our efforts to raise the focus ability in the case of intense light ion fusion experiments, as the inherent electric charge of the light ion beams suppresses the tight focusing. Also in the case of heavy ion fusion research, we need to raise the ion beam current beyond 2 to 3 orders of the present-day status. Under these consideration, in our research project, we planned to investigate the key issues for the fast pinch fusion and foresee the new direction to proceed. At the same time, we planned to investigate the possibility to use the medium-weight ion fusion. This means that we planned to demonstrate how the medium-weight ion driver is suitable for the inertial fusion compared with the other energy drivers.We gathered and checked again all of … More the possible data of pulsed ion diode at Tokyo Institute of Technology at Yokohama, Japan and Sandia National Laboratories at Albuquerque, USA. We extracted N+ ions, including a small amount of O+ with our Intense ion diode. These specie are the typical medium-weigh ion, and we measured the beam micro-divergence angle on the anode surface as a function of the distance along the radius of the anode. We could obtain small Divergence angle which was enough reasonable for us to promote our further development of this kind of medium-weigh ion drivers. A new diode was also designed with a cryogenic anode to continue the similar experiment with more beam power. Associated research topics in our project were the estimation of ablated surface thickness under the interaction between the intense pulsed ion beams and X-ray. The former was done mainly with experiments, and the latter was done mainly with simple calculations. The ablation with a bow shock wave for the reentry vehicle in space, and the laser development and application for and to the active anode plasma production (for the ion diode) were also discussed during the course. Less