偏滤器中杂质辐射功率损耗的分析准则
Analytic Criteria for Power Exhaust in Divertors due to Impurity Radiation
摘要：
目前的偏滤器概念，为下一步的实验，如ITER和TPX依赖于杂质和氢辐射转移的能量从边缘等离子体的主室和偏滤器室壁。这些过程的效率在很大程度上取决于热通量、杂质种类和连接长度。使用数据库的杂质辐射率从ADPAK代码包构建，我们已经制定了所需的杂质分数，杂质种类，连接长度和电子的温度和密度在中平面的标准。与以前的工作相一致，我们发现，从日冕平衡率的杂质辐射，在一般情况下，不足以耗尽最高预期的加热功率在目前和未来的实验。正如其他人所建议的那样，我们研究了增强辐射率与电荷交换复合和杂质再循环的影响，并制定了最小中性分数和杂质再循环率的标准，需要排气指定的功率。我们也用这个准则来寻找偏滤器功率排气的最佳杂质。
英文摘要：
Present divertor concepts for next step experiments such ITER and TPX rely upon impurity and hydrogen radiation to transfer the energy from the edge plasma to the main chamber and divertor chamber walls. The efficiency of these processes depends strongly on the heat flux, the impurity species, and the connection length. Using a database for impurity radiation rates constructed from the ADPAK code package, we have developed criteria for the required impurity fraction, impurity species, connection length and electron temperature and density at the mid-plane. Consistent with previous work, we find that the impurity radiation from coronal equilibrium rates is, in general, not adequate to exhaust the highest expected heating powers in present and future experiments. As suggested by others, we examine the effects of enhancing the radiation rates with charge exchange recombination and impurity recycling, and develop criteria for the minimum neutral fraction and impurity recycling rate that is required to exhaust a specified power. We also use this criteria to find the optimum impurity for divertor power exhaust.
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。
