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Shape resonances, virtual state, and Ramsauer-Townsend minimum in the low-energy electron collisions with benzene

机译:形状共振,虚拟状态和Ramsauer-Townsend在低能量电子碰撞中与苯

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In this work, we revisit the low-energy electron scattering by benzene. We employed the Schwinger multichannel method implemented with pseudopotentials to carry out systematic cross section calculations with different schemes of polarization for the resonant and the totally symmetric irreducible representations within the D-2h symmetry group. We present integral and differential cross sections for incident electron energies up to 12 eV and discuss the shape resonances and the presence of a Ramsauer-Townsend minimum and a virtual state in the former. We also discuss the relation of these physical phenomena with the different schemes of the polarization effects employed in our calculations. Finally, the comparison of our calculated integral and differential cross sections with the available data from the literature suggests improvement in the agreement between theory and experiment. Published by AIP Publishing.
机译:在这项工作中,我们重新审视了苯的低能量电子散射。 我们使用具有假软件的Schwinger多通道方法,以进行系统的横截面计算,其具有不同的偏振方案,以及D-2H对称组内的完全对称的不可缩量表示。 我们为入射电子能量提供的整体和差异横截面,最高可达12个EV,并讨论形状共振以及前者中的Ramsauer-Townsend的存在和虚拟状态。 我们还讨论了这些物理现象与我们计算中所采用的极化效应的不同方案的关系。 最后,与文献中的可用数据的计算的积分和差分横截面的比较表明理论和实验之间的协议中的改进。 通过AIP发布发布。

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