Coherent excitation of hydrogen atoms by proton impact
Coherent excitation of hydrogen atoms by proton impact
复制标题
DOI：
10.1088/0022-3700/19/16/010
复制
发表时间：
1986-08
期刊：
影响因子：
--
通讯作者：
O. Schöller;J. Briggs;R. Dreizler
中科院分区：
文献类型：
--
作者：
O. Schöller;J. Briggs;R. Dreizler
在第一玻恩近似下和在目标本征态的密耦合展开中，计算了质子撞击下n=2和n=3能级氢原子激发的密度矩阵。讨论了激发态的性质可以用密度矩阵元素的某些线性组合来表征的各种方法。一个新的表征，外推的基础上低于阈值的参数描述低速电离电子的角分布，建议。
The density matrix describing excitation of the n=2 and n=3 levels of atomic hydrogen under proton impact is calculated, both in the first Born approximation and in a close-coupling expansion in target eigenstates. Various ways in which the properties of the excited state can be characterized in terms of certain linear combinations of density matrix elements are discussed. A new characterisation, based on an extrapolation below threshold of parameters describing the angular distribution of low-velocity ionised electrons, is suggested.