Simultaneous neutron and x-ray imaging of inertial confinement fusion experiments along a single line of sight at Omega.
Simultaneous neutron and x-ray imaging of inertial confinement fusion experiments along a single line of sight at Omega.
复制标题
Omega 沿单一视线对惯性约束聚变实验进行中子和 X 射线同步成像。
DOI：
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发表时间：
2015
影响因子：
1.6
通讯作者：
C. Wilde
中科院分区：
文献类型：
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作者：
C. Danly;T. Day;D. Fittinghoff;H. Herrmann;N. Izumi;Y. Kim;J. Martinez;F. Merrill;D. Schmidt;R. Simpson;P. Volegov;C. Wilde
中子和x射线成像提供了关于惯性约束聚变内爆几何和流体动力学的关键信息。然而，欧米茄和国家点火装置（NIF）现有的诊断方法不能在同一视线上同时产生中子和x射线的图像。这导致比较这些图像的困难，这些图像捕获了等离子体几何形状的不同部分，对于目前实验中看到的不对称内爆。此外，即使有相反端口的中子和x射线图像，它们也使用不同的探测器，不能提供关于中子和x射线源相对位置的积极信息。在欧米茄的内爆中已经证明了一种技术，它可以沿着与中子图像相同的视线捕获x射线图像。描述了该技术，并提出了一组实验数据，同时讨论了各种图像的共配准技术。结论是，该技术是可行的，如果在不久的将来在NIF上实施，将提供有价值的信息。
Neutron and x-ray imaging provide critical information about the geometry and hydrodynamics of inertial confinement fusion implosions. However, existing diagnostics at Omega and the National Ignition Facility (NIF) cannot produce images in both neutrons and x-rays along the same line of sight. This leads to difficulty comparing these images, which capture different parts of the plasma geometry, for the asymmetric implosions seen in present experiments. Further, even when opposing port neutron and x-ray images are available, they use different detectors and cannot provide positive information about the relative positions of the neutron and x-ray sources. A technique has been demonstrated on implosions at Omega that can capture x-ray images along the same line of sight as the neutron images. The technique is described, and data from a set of experiments are presented, along with a discussion of techniques for coregistration of the various images. It is concluded that the technique is viable and could provide valuable information if implemented on NIF in the near future.