Benchmark experiment and theory for near-threshold excitation of helium by electron impact
Benchmark experiment and theory for near-threshold excitation of helium by electron impact
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电子碰撞近阈值激发氦的基准实验和理论
DOI：
10.1088/0953-4075/39/20/016
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
D. Fursa
中科院分区：
文献类型：
--
作者：
M. Lange;J. Matsumoto;J. Lower;S. Buckman;O. Zatsarinny;K. Bartschat;I. Bray;D. Fursa
本文采用一种新的实验技术测量了氦原子n = 2，3态在阈能附近的电子碰撞激发的绝对散射截面。将实验结果与最近最先进的理论计算的预测进行比较。计算采用了R-矩阵赝态法、B-样条R-矩阵法和收敛紧耦合法。一般来说，很好的协议之间的实验和三个理论。
A new experimental technique has been applied to measure absolute scattering cross sections for electron impact excitation of the n = 2, 3 states of helium at near-threshold energies. The experimental results are compared with predictions from recent state-of-the-art theoretical calculations. The calculations are performed using the R-matrix with pseudostates, B-spline R-matrix, and the convergent close-coupling methods. Generally, very good agreement is found between the experiment and the three theories.