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- W997652548 abstract "摘要 使用电子被C, H和O原子散射总截面的实验数据, 利用修正后的可加性规则计算了能量为50—5000eV的电子被4个复杂大分子C4H8O, C5H10O2, C6H5CH3和C4H8O2散射的总截面, 并将计算结果与实验结果及其他理论计算结果进行了比较. 结果表明, 即 关键词: 电子散射 / 可加性规则 / 总截面 / 几何屏蔽效应 Abstract Using the modified additivity rule (AR) approach, the total cross sections (TCSs) for electron scattering by large molecules C4H8O, C5H10O2, C6H5CH3 and C4H8O2 are calculated over a wide energy range from 50 to 5000eV by employing the experimental TCS results of electron scattering from atoms C, H and O. Here the atomic TCSs are derived from the experimental TCS results of simple molecules (H2, O2, CO). The quantitative TCSs are compared with those obtained by measurements and other theories wherever available. It is shown that there is excellent accordance between the theories obtained by the modified AR approach and the measurements even at energies of several tens of eV. And it is also shown that the problem that the log_log TCS curves obtained by the original AR approach are steeper than those obtained by the experiments, is introduced by the AR model itself. The intrinsic reason is that the mutual screening effects are not taken into consideration in the original AR approach at lower energies. Keywords: electron scattering / additivity rule / total cross section / geometric shielding effect 作者及机构信息 施德恒, 孙金锋, 刘玉芳, 朱遵略, 马 恒 基金项目: 国家自然科学基金(批准号: 10574039)和河南省高校科技创新人才支持计划(批准号: 2008HASTIT008)资助的课题. Authors and contacts Shi De-Heng, Sun Jin-Feng, Liu Yu-Fang, Zhu Zun-Lue, Ma Heng 参考文献 施引文献" @default.
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- W997652548 date "2008-01-01" @default.
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- W997652548 title "Total cross sections of electron scattering by large molecules C4H8O, C5H10O2, C6H5CH3 and C4H8O2 at 50—5000 eV" @default.
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