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arXiv 1406.2579physics.ins-detphysics.plasm-ph
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由DT/DD中子鉴别推断等离子体温度

Plasma Temperature Inference from DT/DD Neutron Discrimination

J. I. Katz

摘要:

DD和DT反应速率可以比较以确定10- 200 eV范围内的等离子体温度。当产额很低或不可预测时,很难区分这两种反应中的中子。如果源在时间上被扩展,则飞行时间方法失败。这些中子可以被区分,因为碳对高能中子的非弹性散射产生4.44 Mev的伽马射线,并且因为含氢材料优先衰减较低能量的中子。我们描述了一个探测器系统,可以区分较低和较高能量的中子的注量低至$\mathcal{O}(10^2)$中子/sterad,即使当飞行时间的方法失败,定义一个数字的优点,并计算其性能在很宽的参数范围。

英文摘要:

DD and DT reaction rates may be compared to determine plasma temperatures in the 10--200 eV range. Distinguishing neutrons from these two reactions is difficult when yields are low or unpredictable. Time of flight methods fail if the source is extended in time. These neutrons may be distinguished because inelastic scattering of more energetic neutrons by carbon produces a 4.44 Mev gamma-ray, and because hydrogenous material preferentially attenuates lower energy neutrons. We describe a detector system that can discriminate between lower and higher energy neutrons for fluences as low as $\mathcal{O}(10^2)$ neutrons/sterad even when time of flight methods fail, define a figure of merit and calculate its performance over a broad range of parameters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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