Volume 625, May 2019
|Number of page(s)||7|
|Section||Atomic, molecular, and nuclear data|
|Published online||03 May 2019|
Electron capture in slow collisions of O6+ ions with atomic hydrogen⋆
School of Physics, Beijing Institute of Technology, Beijing 100081, PR China
2 Institute of Applied Physics and Computational Mathematics, Beijing 100088, PR China
3 HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084, PR China
4 Macedonian Academy of Sciences and Arts, PO Box 428, 1000 Skopje, Macedonia
Accepted: 2 March 2019
Aims. Electron capture in collisions of highly charged O6+ ions with ground-state hydrogen atoms is a very important process in solar wind X-ray studies.
Methods. In the present study, the full quantum-mechanical molecular-orbital close-coupling method is employed to study electron capture reactions in collisions of O6+ ion with ground-state atomic hydrogen in the energy region from 10−4 keV u−1 to 5 keV u−1. The ab initio multi-reference single- and double-excitation configuration interaction (MRD-CI) method is used to calculate the potential and coupling data used in the QMOCC calculations.
Results. Total and state-selective cross sections for the dominant and subdominant reaction channels are calculated and compared with the available experimental and theoretical data. The branching ratios for Lithium-like O5+ excited ions are used to calculate the contribution of cascade radiative transitions from n = 5 levels to the population of 4l states. From the calculated cross sections, reaction rate coefficients are obtained for temperatures between 1000 and 1 × 109 K and compared with other calculations.
Key words: solar wind / atomic data
Tables of the cross-sections are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (126.96.36.199) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/625/A29
© ESO 2019
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.