电子与BeD$^+$之间的低能碰撞
Low-energy collisions between electrons and BeD$^+$
AI总结：
本文利用多通道量子缺陷理论研究了BeD$^+$离子的解离复合与振动激发过程，计算了电子能量在$10^{-5}$--2.7 eV范围内的截面与速率系数，为ITER和JET等磁约束聚变装置的边缘等离子体建模提供了重要的速率系数数据库。
摘要：
多通道量子缺陷理论被应用于处理BeD$^+$离子在其基电子态（$\textrm{X}\\,{^{1}Σ^{+}},v_{i}^{+}=0\ldots 23$）的24个振动能级中的解离复合与振动激发过程。在计算截面及相应的速率系数时，考虑了BeD$^{**}$态的三种电子对称性（\ensuremath{^{2}Π}、\ensuremath{^{2}Σ^{+}}和\ensuremath{^{2}Δ}）。入射电子能量范围为$10^{-5}$--2.7 eV，电子温度范围为100--5000~K。强调了这些碰撞过程的振动依赖性。所得数据可用于磁约束聚变边缘等离子体建模与光谱学，适用于以铍为主腔体材料（如ITER和JET）并使用氘-氚燃料混合物运行的装置。广泛的速率系数数据库以图形形式及解析拟合函数呈现，其参数列于补充材料中。
英文摘要：
Multichannel quantum defect theory is applied in the treatment of the dissociative recombination and vibrational excitation processes for the BeD$^+$ ion in the twenty four vibrational levels of its ground electronic state ($\textrm{X}\,{^{1}Σ^{+}},v_{i}^{+}=0\ldots 23$). Three electronic symmetries of BeD$^{**}$ states (\ensuremath{^{2}Π}, \ensuremath{^{2}Σ^{+}}, and \ensuremath{^{2}Δ}), are considered in the calculation of cross sections and the corresponding rate coefficients. The incident electron energy range is $10^{-5}$--2.7 eV and the electron temperature range is 100--5000~K. The vibrational dependence of these collisional processes is highlighted. The resulting data are useful in magnetic confinement fusion edge plasma modelling and spectroscopy, in devices with beryllium based main chamber materials, such as ITER and JET, and operating with the deuterium-tritium fuel mix. An extensive rate coefficients database is presented in graphical form and also by analytic fit functions whose parameters are tabulated in the supplementary material.
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