Charge-transfer-induced x-ray spectra in collisions of Ne10+ with He and Ne atoms

The x-ray spectra resulting from single-electron capture in charge-exchange collisions of Ne10+ with He andNe atoms are investigated for the projectile energy of 4.54 keV/u using the two-center atomic-orbital close-coupling method. The calculated spectra of the Ne9+ ion produced in Ne10+ + He and Ne10+ + Ne electron-capture collisions have, generally speaking, the same level of agreement with experimental measurements as those calculated previously by the classical trajectory Monte Carlo method, indicating that multi-electron-capture processes, particularly in the case of the Ne10+ + Ne system, significantly affect the considered spectra. The effects of two-electron capture on the spectral line intensity have been demonstrated qualitatively by using the binomial statistics and independent particle model for the target outer-shell electrons. The role of multi-electron-capture processes in the Ne10+ + Ne collision system needs further attention.