Spin-resolved alignment and orientation effects in atomic collisions
Spin-resolved alignment and orientation effects in atomic collisions
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原子碰撞中自旋解析的排列和方向效应
DOI：
10.1071/ph960301
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
N. Andersen
中科院分区：
文献类型：
--
作者：
K. Bartschat;N. Andersen
碰撞激发的原子系综的密度矩阵参数化广义占弹丸和目标自旋极化。密度矩阵元素，包含自旋分辨的排列和取向参数，可以通过测量Andersen和Bartschat（1994）引入的“广义斯托克斯参数”来确定，以描述散射射弹偏振光子符合实验。着重于电子碰撞激发轻碱金属型目标和汞，目前的实验状态，这样的实验进行了审查，特别是关于“完美散射实验”，从而确定所有独立的散射振幅。
The density matrix parametrisation of collisionally excited atomic ensembles is generalised to account for projectile and target spin polarisations. The density matrix elements, containing spin-resolved alignment and orientation parameters, can be determined by measurements of the 'generalised Stokes parameters' introduced by Andersen and Bartschat (1994) to describe scattered-projectile-polarised-photon coincidence experiments. Focusing on electron impact excitation of light alkali-type targets and mercury, the present experimental status of such experiments is reviewed, in particular with regard to the 'perfect scattering experiment' whereby all independent scattering amplitudes are determined.