Integral Cross Sections for Electron–Magnesium Scattering Over a Broad Energy Range (0–5000 eV)

IF 4.4 2区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physical and Chemical Reference Data Pub Date : 2018-12-01 DOI:10.1063/1.5081132

R. McEachran, F. Blanco, G. García, P. Stokes, R. White, M. Brunger

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引用次数: 12

Abstract

We report the results from the application of our optical potential and relativistic optical potential (ROP) methods to electron–magnesium scattering. The energy range of this study was 0–5000 eV, with the results for the integral elastic cross sections, summed discrete electronic-state excitation integral cross sections, momentum transfer cross sections, and total ionisation cross sections being reported. Where possible, we compare the present results to the available experimental data and to the earlier results from close coupling and R-matrix type computations. Typically, a quite fair level of accord is found between our ROP calculations and the earlier theoretical and experimental cross sections. Additionally, from the assembled database, we provide for the modeling community some recommended cross section sets for use in their simulations, in which magnesium is a constituent. Electron transport coefficients are subsequently calculated for reduced electric fields ranging from 0.1 to 1000 Td using a multi-term solution of Boltzmann’s equation. Substantial differences in the transport coefficients between the ROP calculations and the recommended cross sections are observed over the range of fields considered, clearly illustrating the importance of the veracity of the database in the simulations.We report the results from the application of our optical potential and relativistic optical potential (ROP) methods to electron–magnesium scattering. The energy range of this study was 0–5000 eV, with the results for the integral elastic cross sections, summed discrete electronic-state excitation integral cross sections, momentum transfer cross sections, and total ionisation cross sections being reported. Where possible, we compare the present results to the available experimental data and to the earlier results from close coupling and R-matrix type computations. Typically, a quite fair level of accord is found between our ROP calculations and the earlier theoretical and experimental cross sections. Additionally, from the assembled database, we provide for the modeling community some recommended cross section sets for use in their simulations, in which magnesium is a constituent. Electron transport coefficients are subsequently calculated for reduced electric fields ranging from 0.1 to 1000 Td using a mu...

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宽能量范围（0–5000 eV）上电子-镁散射的积分截面

我们报告了我们的光学势和相对论光学势（ROP）方法在电子-镁散射中的应用结果。本研究的能量范围为0–5000 eV，报告了积分弹性截面、离散电子态激发积分截面、动量传递截面和总电离截面的结果。在可能的情况下，我们将当前的结果与可用的实验数据以及来自紧密耦合和R矩阵类型计算的早期结果进行比较。通常，我们的ROP计算与早期的理论和实验横截面之间存在相当大的一致性。此外，从组装的数据库中，我们为建模社区提供了一些推荐的横截面集，用于他们的模拟，其中镁是一种成分。随后，使用玻尔兹曼方程的多项解计算0.1至1000Td范围内的还原电场的电子输运系数。在考虑的字段范围内，观察到ROP计算和推荐横截面之间的传输系数存在显著差异，清楚地说明了数据库在模拟中的准确性的重要性。我们报告了我们的光学势和相对论光学势（ROP）方法在电子-镁散射中的应用结果。本研究的能量范围为0–5000 eV，报告了积分弹性截面、离散电子态激发积分截面、动量传递截面和总电离截面的结果。在可能的情况下，我们将当前的结果与可用的实验数据以及来自紧密耦合和R矩阵类型计算的早期结果进行比较。通常，我们的ROP计算与早期的理论和实验横截面之间存在相当大的一致性。此外，从组装的数据库中，我们为建模社区提供了一些推荐的横截面集，用于他们的模拟，其中镁是一种成分。随后使用μ。。。

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来源期刊

Journal of Physical and Chemical Reference Data 化学-化学综合

CiteScore

6.90

自引率

11.60%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Physical and Chemical Reference Data (JPCRD) is published by AIP Publishing for the U.S. Department of Commerce National Institute of Standards and Technology (NIST). The journal provides critically evaluated physical and chemical property data, fully documented as to the original sources and the criteria used for evaluation, preferably with uncertainty analysis. Critical reviews may also be included if they document a reference database, review the data situation in a field, review reference-quality measurement techniques, or review data evaluation methods.