Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion
Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion
复制标题
诊断与磁化线性惯性聚变相关的激光预热磁化等离子体
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Blue
中科院分区：
文献类型：
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作者：
A. Harvey;A. Sefkow;T. Nagayama;M. Wei;E. Campbell;G. Fiksel;P. Chang;J. Davies;D. Barnak;V. Glebov;P. Fitzsimmons;J. Fooks;B. Blue
我们在OMEGA EP激光设备上展示了一个平台，该平台可以创建和诊断磁衬惯性聚变（MagLIF）概念预热阶段的条件。实验是用9 kJ的3ω（355 nm）光加热用10 T轴向场磁化的低密度氘气（电子密度：2.5×1020 cm−3=0.025临界密度）。结果表明，氘等离子体达到670 ± 140 eV的峰值电子温度，使用氩掺杂剂的条纹光谱学进行诊断。结果表明，等离子体相关的预热阶段的MagLIF可以在多个激光设施，从而使更快的进展，了解磁化预热。结果与磁辐射流体动力学模拟进行了比较，并对未来的实验计划进行了说明。
We present a platform on the OMEGA EP Laser Facility that creates and diagnoses the conditions present during the preheat stage of the MAGnetized Liner Inertial Fusion (MagLIF) concept. Experiments were conducted using 9 kJ of 3ω (355 nm) light to heat an underdense deuterium gas (electron density: 2.5×1020 cm−3=0.025 of critical density) magnetized with a 10 T axial field. Results show that the deuterium plasma reached a peak electron temperature of 670 ± 140 eV, diagnosed using streaked spectroscopy of an argon dopant. The results demonstrate that plasmas relevant to the preheat stage of MagLIF can be produced at multiple laser facilities, thereby enabling more rapid progress in understanding magnetized preheat. Results are compared with magneto-radiation-hydrodynamics simulations, and plans for future experiments are described.