We report on the measurements of double differential cross sections, at zero degree, for the production of secondary electrons from the collision of 0, 6 MeV amu-1 Cu5+, I7+, Au11+, U13+, Cu19+, t23+ and Au29+ projectiles with H2 and He. The shapes and positions of the observed binary encounter electron peaks are compared with continuum distorted wave-eikonal initial state (CDW-EIS), impulse approximation and classical trajectory Monte Carlo calculations, as well as with predictions from an adiabatic resonant tunnelling model recently proposed by Fainstein and co-workers. The experimentally observed binary peak positions were found to be essentially determined by the projectile's ionic charge q and to be independent of the projectile's nuclear charge Zp. Although the experimental conditions correspond to the strong perturbation regime, i.e. 1.0 ≤ q/Vp ≤ 5.9 (Vp being the projectile velocity), the CDW-EIS approach accounts well for the position and shape of the binary peak. © 1993 IOP Publishing Ltd.
W. Wolff and H. E. Wolff and J. L. Shinpaugh and J. Wang and R. E. Olson and D. Fainstein and S. Lencinas and U. Bechthold and R. Herrmann and H. Schmidt-Bocking, "Ionic Charge Dependence Of The Zero Degree Binary Encounter Peak For Partially Stripped Heavy Ions," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 26, no. 22, pp. 4169 - 4180, IOP Publishing, Nov 1993.
The definitive version is available at https://doi.org/10.1088/0953-4075/26/22/022
Chemical and Biochemical Engineering
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28 Nov 1993