https://doi.org/10.1140/epjd/s10053-021-00123-6
Regular Article - Atomic and Molecular Collisions
Electron removal from hydrogen atoms by impact of multiply charged nuclei
1
Department of Physics, Faculty of Sciences and Mathematics, University of Niš, P.O.Box 224, 18000, Niš, Serbia
2
Department of Oncology-Pathology, Karolinska Institute, P.O. Box 260, 171 76, Stockholm, Sweden
3
Radiation Physics and Nuclear Medicine, Karolinska University Hospital, 171 76, Stockholm, Sweden
Received:
8
January
2021
Accepted:
12
March
2021
Published online:
2
April
2021
The boundary-corrected continuum intermediate state (BCIS) method is used to compute total cross sections for electron capture by seven heavy nuclei (
, 
, 
, 
, 
, 
and 
) from atomic hydrogen 
at impact energies 20–3000 keV/amu. In all the cases, regarding the exit channel, we compute the cross sections 
for the specific individual final bound states 
of hydrogen-like ions, where throughout 
(the ground state of the target, H). The maximal value of the principal quantum number n has been taken to be 
and 6 for 
and 
respectively, as well as 
for 
and 
All the sub-levels (l, m) for every n are included in the computations. Further, the summed cross sections 
for all the final (f) states are reported. In 
the state-selective cross sections contain the exact contributions from the final levels with 
The collective yield from the final states with 
is approximated by the Oppenheimer 
scaling. To put the present results into perspective, comparisons are made with the boundary-corrected first Born (CB1) and the continuum distorted wave-eikonal final state (CDW-EFS) methods. Both the BCIS and CDW-EFS methods belong to the group of the second-order asymmetric methods for charge-exchange. Most importantly, the available experimental data are used to assess the relative performance of the BCIS method for total cross sections summed over all final states. This type of total cross section databases from our computations can find useful applications in several neighboring disciplines (plasma physics, astrophysics, new energy sources in fusion research) as well as in ion transport physics of relevance to, e.g., radiotherapy in medicine.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
