Line emission and alignment effects in state selective electron transfer in He2+-Li(2s, 2pΣ, 2pπ) collisions
Department of Physics, Banaras Hindu University,
Varanasi 221 005, India
Revised: 3 June 1999
Published online: 15 February 2000
Classical Trajectory Monte-Carlo (CTMC) method has been used to investigate state selective electron capture by He2+ ions colliding with Li(2s) and Li(2p) in Σ as well as Π alignments in the energy range 1-15 keV/amu. He+(4l) electron capture, line emission [ He II(n = 4 3)] cross-sections and alignment parameters have been calculated and analyzed in the light of the available results. The undulatory structure of the capture and emission cross-sections have been explained qualitatively in terms of a quasi-molecular ion formation. Projectile impact energy and spatial overlap play crucial role in determining the alignment effects.
PACS: 34.70.+e – Charge transfer
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000