中期Z气体填充对OMEGA激光器中冲击驱动爆破的动力学和性能的影响
M Gatu Johnson1, P J Adrian1, B D Appelbe2
1<a href="https://ror.org/042nb2s44">Massachusetts Institute of Technology</a> Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
Physical review. E
|July 18, 2024
概括
在冲击驱动的爆炸中,将气添加到气中,会增加离子温度,但降低中子产量. 这项研究探讨了研究等离子体中的核反应的权衡.
科学领域:
- 等离子体物理学的物理学
- 惯性封闭融合是一种惯性封闭的融合.
- 核反应的核反应
背景情况:
- 冲击驱动的爆炸对于惯性封闭核聚变研究至关重要.
- 燃料气体的组成显著影响了爆破性能和诊断.
- 了解中Z元素在聚变等离子体中的作用对于优化能量产量和研究特定核反应至关重要.
研究的目的:
- 为了研究添加- (N2D2) 气填充与纯 (D2) 相比对OMEGA激光设施的冲击驱动爆破性能的影响.
- 分析中Z填充气体对离子温度和中子产量的影响.
- 探索使用N2D2爆破来研究CNO循环相关的核反应的可行性.
主要方法:
- 使用OMEGA激光设备进行冲击驱动的内置,100%D2和50:50N2D2气体填充.
- 测量DD-中子光谱以推断离子温度 (Tion).
- 在模拟中使用了1D动态Vlasov-Fokker-Planck (ifp) 和辐射水力学代码 (hyades,xrage).
主要成果:
- 与D2 implosions相比,N2D2 implosions显示出离子温度 (Tion) 高出34%±6%,而只有D2 implosions显示出更高的离子温度.
- 对于只有D2的爆发,DD-中子产量是N2D2.5的7.2±0.5倍,而不是N2D2.
- 模拟表明N2D2的产量损失是由于D2含量降低和热D2燃料的较低部分,动力模拟与实验Ton和产量比率相匹配.
结论:
- 的添加增强了D2爆发中的离子加热,尽管存在潜在的辐射损失.
- 观察到的N2D2爆发产量减少主要归因于减少的分数和物种间扩散效应.
- N2D2平台可用于研究等离子体环境中的CNO循环相关的核反应.
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