Electron-impact excitation of the 5$$\varvec{^2\textbf{S}_{1/2} \rightarrow 5^2\textbf{P}_{1/2}}$$ and 5$$\varvec{^2\textbf{P}_{3/2}}$$ transitions in rubidium by 40 eV electrons: theory and experiment
Electron-impact excitation of the 5$$\varvec{^2\textbf{S}_{1/2} \rightarrow 5^2\textbf{P}_{1/2}}$$ and 5$$\varvec{^2\textbf{P}_{3/2}}$$ transitions in rubidium by 40 eV electrons: theory and experiment
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5$$varvec{^2 extbf{S}_{1/2} ightarrow 5^2 extbf{P}_{1/2}}$$ 和 5$$varvec 的电子撞击激发
DOI：
10.1140/epjd/s10053-022-00413-7
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Brunger, M. J.
中科院分区：
文献类型：
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作者：
Hamilton, K. R.;Zatsarinny, O.;Bartschat, K.;Predojević, B.;Šević, D.;Marinković, B. P.;Brunger, M. J.
摘要本文报道了40 eV入射电子激发铷52s1 /2→52p1 /2和52s1 /2→52p3 /2态的一系列详细的Breit-Pauli和Dirac b样条r -矩阵（DBSR）微分截面（DCS）计算。这里显示的早期BP计算是在5个状态和12个状态下进行的，而DBSR模型分别耦合了150和325个状态。我们还报告了一组有限的DCS对未解析52p1 /2、3/2态的测量结果，实验数据被限制在2-10°散射电子角范围内。通常，对于未解析52p1 /2,3/2状态的激励，我们的计算DCS与实测DCS之间的一致性很好，DBSR预测与实测数据之间的一致性最好。本文的理论和实验结果也与先前使用非相对论畸变波玻恩近似和相对论畸变波模型计算的40 eV的预测结果进行了比较。图形抽象
AbstractWe report on a series of detailed Breit-Pauli and Dirac B-spline R-matrix (DBSR) differential cross section (DCS) calculations for excitation of the52S1/2→52P1/2and52S1/2→52P3/2states in rubidium by 40 eV incident electrons. The early BP computations shown here were carried out with both 5 states and 12 states, while the DBSR models coupled 150 and 325 states, respectively. We also report corresponding results from a limited set of DCS measurements on the unresolved52P1/2,3/2states, with the experimental data being restricted to the scattered electron angular range 2–10∘. Typically, good agreement is found between our calculated and measured DCS for excitation of the unresolved52P1/2,3/2states, with best accord being found between the DBSR predictions and the measured data. The present theoretical and experimental results are also compared with predictions from earlier 40 eV calculations using the nonrelativistic Distorted-Wave Born Approximation and a Relativistic Distorted-Wave model. Graphic abstract