Scattering of low energy He2+ ions by Ne, Ar, and Kr atoms

Mullen, J. M.; Bailey, T. L.

doi:10.1016/0301-0104(75)85013-0

Cited by 15 publications

(1 citation statement)

References 12 publications

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“…[28,29] With this calculation, the discrepancies of the experimental measurements [14,15] are clarified in the low-energy region. The present dominant electron capture channel with an exothermic energy defect of about 5.9 eV with the initial state is consistent with the experimental conclusion of Abdelrahman et al, [14] Silva et al [15] and Austin et al [30] Atomic units are used throughout unless otherwise stated.…”

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confidence: 88%

Ab Initio Study of Single- and Double-Electron Capture Processes in Collisions of He²⁺ Ions and Ne Atoms

Wang¹,

Wang²,

Peng³

et al. 2021

Chinese Phys. Lett.

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The single- and double-electron capture (SEC, DEC) processes of He2+ ions colliding with Ne atoms are studied by utilizing the full quantum-mechanical molecular-orbital close-coupling method. Total and state-selective SEC and DEC cross sections are presented in the energy region of 2 eV/u to 20 keV/u. Results show that the dominant reaction channel is Ne+(2s2p 6 2 S) + He+(1s) in the considered energy region due to strong couplings with the initial state Ne(2s 22p 6 1 S) + He2+ around the internuclear distance of 4.6 a.u. In our calculations, the SEC cross sections decrease initially and then increase whereby, the minimum point is around 0.38 keV/u with the increase of collision energies. After considering the effects of the electron translation factor (ETF), the SEC cross sections are increased by 15%–25% nearby the energy region of keV/u and agree better with the available results. The DEC cross sections are smaller than those of SEC because of the larger energy gaps and no strong couplings with the initial state. Due to the Demkov-type couplings between DEC channel Ne2+(2s22p 4 1 S) + He(1s 2) and the dominating SEC channel Ne+(2s2p 6 2 S) + He+(1s), the DEC cross sections increase with increasing impact energies. Good consistency can also be found between the present DEC and the experimental measurements in the overlapping energy region.

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