Electron capture processes in ion-atom collisions

Formation of H-atom in 2s excited state of proton-lithium and proton-sodium scattering

“…Different approximate methods have been proposed by previous workers which are discussed in review articles [4][5][6][7]. The formation of H(2s) atom in the process H + +Li→H (2s)+Li + has been studied only in low energy ranges.…”

Selective valence electron transfer in alkali atom-alkali ion collisions

“…Li" + Na(3s, T)--,Li(2p, T)+ Na(2p6) + (1) where the 3s-electron of the Na-atom is spin-polarised. The reaction (1) will be characterised in terms of scattering amplitudes f(M L M s too) where M L and M s denote the z-components of the orbital angular momentum L and the spin S of the Li-atom and m o is the spin component of the initial Na-atoms.…”

“…In such processes the photons, subsequently emitted can be measured in coincidence with the scattered projectiles in order to define the symmetry and the impact parameter dependence of the interaction. Numerical calculations have been performed for the system H + +H~H*+H + (see for example [1]- [5]). However, an experimental test of the theory for this system is difficult, particularly because the nearly degenerate H-levels in the final excited terms cannot be spectrally resolved and give rise to many coherence effects obscuring the experimental results.…”

Charge transfer of slow highly charged xenon ions in collisions with magnesium atoms

“…Charge transfer is a fundamental atomic process which has been studied in various contexts for a long time, not only because it gives lot of information about atomic structure [1][2][3][4][5], but also because it plays an important role in astrophysics, fusion plasmas, and accelerator physics. For example, it is an important source of cometary and interstellar x rays [6,7].…”