Ionization Collision Dynamics in 3.6 MeV/u Ni²⁴⁺ on He Encounters
Abstract
The momentum balance between all emerging particles (electron, recoil ion and projectile) was explored for single ionization of helium by 3.6 MeV/u Ni24+ impact in a kinematically complete experiment. Technically this was achieved by integrating a novel 4π low-energy electron analyzer into a high-resolution cold-target recoil-ion momentum spectrometer. More than 90% of the "soft electrons" (0 eV ≤ Ee ≲ 50 eV) are ejected in forward direction with a most probable longitudinal energy (along the ion-beam) of Ee⊥ ≈ 3 eV. Not the projectile, but the backwards ejected recoil-ion (ER⊥ ≈ 0.4 meV) compensates the electron longitudinal momentum except of a small contribution from the inelasticity of the reaction. Energy losses of the 0.2 GeV projectiles as small as ΔEp Ep = 3.4 x 10-7, transverse momentum balances, as well as electron energy and angular distributions for defined final recoil-ion charge state become accessible with this technique. © 1995.
Recommended Citation
J. Ullrich et al., "Ionization Collision Dynamics in 3.6 MeV/u Ni²⁴⁺ on He Encounters," Nuclear Inst. and Methods in Physics Research, B, vol. 98, no. 1 thru 4, pp. 375 - 379, Elsevier, May 1995.
The definitive version is available at https://doi.org/10.1016/0168-583X(95)00150-6
Department(s)
Physics
International Standard Serial Number (ISSN)
0168-583X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
03 May 1995
Comments
National Science Foundation, Grant None