Regular Article

Quasicrossings of potential curves in the two-Coulomb-center problem

¹ Institute of Physics, Pavol Jozef Šafárik University, Park Angelinum 9, 040 01 Košice, Slovak Republic
² Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St 6, 117198 Moscow, Russia
³ Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic
⁴ Department of Theoretical Physics, Uzhhorod National University, Voloshyna St 54, 88000 Uzhhorod, Ukraine

^a e-mail: oleksandr.reity@uzhnu.edu.ua

Received: 30 March 2017
Received in final form: 9 December 2017
Published online: 22 February 2018

Abstract

The quasiclassical expression for the exchange interaction ΔE of potential curves at the points of their quasicrossing is found by means of the combined approach for solving the quantum mechanical two-Coulomb-center Z₁eZ₂ problem. It can be used further for the calculation of cross sections of charge exchange processes between hydrogen or hydrogen-like atoms and bare nuclei.