Low energy super-elastic scattering studies of calcium over the complete angular range using a magnetic angle changing device
Low energy super-elastic scattering studies of calcium over the complete angular range using a magnetic angle changing device
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使用磁角改变装置对钙在整个角度范围内的低能超弹性散射进行研究
DOI：
10.1088/0953-4075/41/5/055202
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
G. King
中科院分区：
文献类型：
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作者：
Martyn Hussey;A. Murray;W. Macgillivray;G. King
超弹性散射过程可以被认为是电子-光子符合测量的“时间反转”，其优点是数据的积累速度快了数千倍。这使得对原子的电子激发的研究更加广泛和准确，这些原子也可以使用激光辐射来激发。应用新发明的磁角度变化（MAC）设备，这些实验允许完整的散射几何第一次被访问，并在这些新的实验中采用的实验方法进行了讨论。给出了在散射角从0°到180°范围内，入射能量为45 eV和55 eV时，钙原子41 P1态的电子碰撞激发数据。结果进行比较的DWBA理论的Stauffer和同事，一般非常好的协议。
Super-elastic scattering processes can be considered as the ‘time reversal’ of electron–photon coincidence measurements, with the advantage that data are accumulated thousands of times faster. This allows a far more extensive and accurate study of electron excitation of atoms which can also be excited using laser radiation. The application of a newly invented magnetic angle changing (MAC) device to these experiments has allowed the complete scattering geometry to be accessed for the first time, and experimental methods adopted in these new experiments are discussed here. Data are presented for excitation of the 41P1 state of calcium by electron impact at scattering angles from near 0° to beyond 180°, with incident energies of 45 eV and 55 eV. The results are compared to the DWBA theory of Stauffer and colleagues, with generally excellent agreement.