Differential cross section ratios for low-energy electron-impact excitation of the levels of krypton - sensitive tests of relativistic effects for heavy noble gases
Differential cross section ratios for low-energy electron-impact excitation of the levels of krypton - sensitive tests of relativistic effects for heavy noble gases
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氪能级低能电子碰撞激发的微分截面比 - 重惰性气体相对论效应的敏感测试
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发表时间：
1999
期刊：
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通讯作者：
C. Fontes
中科院分区：
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作者：
X. Guo;M. Khakoo;D. Mathews;G. Mikaelian;A. Crowe;I. Kanik;S. Trajmar;V. Zeman;K. Bartschat;C. Fontes
给出了电子碰撞激发氪的R矩阵和一元化多体理论的新的实验测量和理论计算。证明了微分截面比在为重稀有气体组态的激发提供电子散射模型的灵敏测试中的作用。除了不同的横截面之外，这些比率还提供了对碰撞过程细节的有趣的物理洞察。将测量的比率与目前和其他现有计算的预测进行比较，显示出一些一致，但也表明需要对这些模型进行重大改进。
We present new experimental measurements and theoretical calculations of R-matrix and unitarized first-order many-body theory for electron-impact excitation of krypton. The usefulness of differential cross section ratios in providing sensitive tests of electron scattering models for the excitation of the configuration of the heavy rare gases is demonstrated. In addition to differential cross sections alone, these ratios provide interesting physical insights into the details of the collision process. Comparisons of the measured ratios with predictions from the present and other available calculations show some agreement, but also reveal that significant improvements of these models are required.