A Complete Cross Section Data Set for Electron Scattering by Pyridine: Modelling Electron Transport in the Energy Range 0-100 eV.
A Complete Cross Section Data Set for Electron Scattering by Pyridine: Modelling Electron Transport in the Energy Range 0-100 eV.
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DOI：
10.3390/ijms21186947
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发表时间：
2020-09-22
影响因子：
5.6
通讯作者：
García G
中科院分区：
文献类型：
--
作者：
Costa F;Traoré-Dubuis A;Álvarez L;Lozano AI;Ren X;Dorn A;Limão-Vieira P;Blanco F;Oller JC;Muñoz A;García-Abenza A;Gorfinkiel JD;Barbosa AS;Bettega MHF;Stokes P;White RD;Jones DB;Brunger MJ;García G
我们之前测量或计算的吡啶在0-100 eV能量范围内的电子散射截面已经被严格编译，并在这里补充了新的电子能量损失谱和双微分电离截面的测量结果。本研究使用的实验技术包括线性传输装置和反应显微镜系统。为了满足输运模型的要求，在我们的独立原子模型中使用筛选修正的可加性规则和干涉效应（am - scar）方法对能量大于10 eV的理论数据进行了重新计算。此外，本文还给出了基于伪势方法的r矩阵和Schwinger多通道在能量分别低于15 eV和20 eV时的结果。通过将模拟的电子通过吡啶传输的能量分布与在磁约束条件下电子-气体传输实验中观察到的能量分布进行比较，评估了该完整数据集的可靠性。此外，在双微分截面实验结果的基础上，讨论了非弹性散射电子的角分布表达式。
Electron scattering cross sections for pyridine in the energy range 0–100 eV, which we previously measured or calculated, have been critically compiled and complemented here with new measurements of electron energy loss spectra and double differential ionization cross sections. Experimental techniques employed in this study include a linear transmission apparatus and a reaction microscope system. To fulfill the transport model requirements, theoretical data have been recalculated within our independent atom model with screening corrected additivity rule and interference effects (IAM-SCAR) method for energies above 10 eV. In addition, results from the R-matrix and Schwinger multichannel with pseudopotential methods, for energies below 15 eV and 20 eV, respectively, are presented here. The reliability of this complete data set has been evaluated by comparing the simulated energy distribution of electrons transmitted through pyridine, with that observed in an electron-gas transmission experiment under magnetic confinement conditions. In addition, our representation of the angular distribution of the inelastically scattered electrons is discussed on the basis of the present double differential cross section experimental results.
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