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Dataset for Antiproton-impact ionization of hydrogen atom with Yukawa interaction
(2018)
;
Grozdanov, Tashko
;
Janev, Ratko
The process of ionization of hydrogen atom by antiproton impact is studied when the interparticle interactions in the system are described by screened interactions of Yukawa type. The collision dynamics is described by the semiclassical atomic-orbital close-coupling method in which the bound atomic states and positive energy continuum pseudostates are determined by diagonalization of target Hamiltonian in a sufficiently large even-tempered basis to ensure convergence of the results at each value of the screening length λ of the interaction. With decreasing the screening length, the bound states in the Yukawa potential become unbound, thus increasing the number of continuum pseudostates. At low collision energies, this leads to the increase of the ionization cross section. It is observed that the energies of pseudostates, generated by the exit of nl bound states in the continuum, at certain critical values λcnl exhibit series of avoided crossings when λ is varied. The avoided crossings appear between the (n + k)l and (n + k + 1)l (n =1, 2, 3, . . . ; k = 0, 1, 2, . . .) states at screening lengths close to the critical screening length λcnl . The avoided crossings become increasingly less pronounced with increasing n, k and l. The matrix elements for the (n + k)l − (n + k + 1)l transitions at the avoided crossings λ(n+k+1)l exhibit maxima and are reflected x,(n+k)l in the structure of the cross sections for population of the lower nl pseudostates. These structures are, however, smeared out in the total ionization cross section.
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Datasets for Electron capture and excitation in H^+ - Li^+ collisions
(2019)
;
Ratko K. Janev
The data files attached to this paper follows the information presented on the corresponding figures. Some of them contains additional data, regarding state energies and charge transfer sections to higher states, which were not presented in the published version of the paper due to page limitations. In addition to published charge exchange and excitation cross sections we provide unpublished data for direct ionization section, obtained with the adopted basis.

Ss. Cyril and Methodius University in Skopje

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