Dielectronic recombination of tungsten ions
Dielectronic recombination of tungsten ions
复制标题
钨离子的双电子复合
DOI：
10.1088/0953-4075/49/15/155201
复制
发表时间：
2016
影响因子：
1.6
通讯作者：
Chen Ximeng
中科院分区：
文献类型：
--
作者：
Li Bowen;O'Sullivan Gerry;Dong Chenzhong;Chen Ximeng
用从头算方法计算了类氖钨、类钯钨和类银钨的双电子复合速率系数。能级，辐射跃迁几率和自电离率计算使用灵活的原子代码。讨论了不同信道对总速率系数的贡献。目前计算的速率系数与其他计算方法进行比较。已经发现了很好的协议，为Ne类W，而一个很大的差异被发现为Pd类W，这意味着更多的从头计算和实验测量是迫切需要的。进一步的计算表明，组态相互作用的影响很小，而非共振辐射稳定（NRS）的双激发非自电离态的贡献是至关重要的。所获得的数据预计将是有用的建模等离子体融合应用，特别是对ITER社区，这使得实验验证更加必要。
Ab initio calculations of dielectronic recombination rate coefficients of Ne-, Pd- and Ag-like tungsten have been performed. Energy levels, radiative transition probabilities and autoionization rates were calculated using the Flexible Atomic Code. The contributions from different channels to the total rate coefficients are discussed. The present calculated rate coefficients are compared with other calculations where available. Excellent agreement has been found for Ne-like W while a large discrepancy was found for Pd-like W, which implies that more ab initio calculations and experimental measurements are badly needed. Further calculations demonstrated that the influence of configuration interaction is small while nonresonant radiative stabilizing (NRS) contribution to doubly excited non-autoionizing states are vital. The data obtained are expected to be useful for modeling plasmas for fusion applications, especially for the ITER community, which makes experimental verification even more essential.