We present direct measurements of electron temperature variations within an inertially confined deuterium-tritium plasma caused by localized mix of higher-Z materials into the central hot spot. The data are derived from newly developed differentially filtered penumbral imaging of the bremsstrahlung continuum emission. Our analysis reveals distinct localized emitting features in the stagnated hot-spot plasma, and we infer spatial variations in the electron temperature: the mixed region is $660\pm 130\mathrm{eV}$ colder than the surrounding hot-spot plasma at $3.26\pm 0.11\mathrm{keV}$. Our analysis of the energy flow shows that we measure approximately steady-state conditions where the radiative losses in the mix region are balanced by heat conduction from the surrounding hot deuterium-tritium plasma.

中文翻译：

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国家点火设施内胶囊爆炸中的局部混合诱发辐射冷却

我们提出了在惯性约束的氘-the等离子体中电子温度变化的直接测量，该等离子体由较高Z材料在局部热点中的局部混合引起。数据来自newly致辐射连续体发射的新开发的差分滤波半影成像。我们的分析揭示了停滞的热点等离子体中存在明显的局部发射特征，并且我们推断了电子温度的空间变化：混合区域为$660\pm 130\mathrm{电子伏特}$ 比周围的热点血浆冷 $3.26\pm 0.11\mathrm{keV}$。我们对能量流的分析表明，我们测量的是近似稳态的条件，其中混合区域中的辐射损耗被周围热氘-plasma等离子体的热传导所平衡。