Ejected-electron-energy and angular dependence of fully differential ionization cross sections in medium-velocity proton collisions with He and H.sub.2./sub.

0539162 - FZÚ 2021 RIV US eng J - Journal Article
Dhital, M. - Bastola, S. - Silvus, A. - Davis, J. - Lamichhane, B.R. - Ali, E. - Ciappina, Marcelo F. - Lomsadze, R. - Hasan, A. - Madison, D.H. - Schulz, M.
Ejected-electron-energy and angular dependence of fully differential ionization cross sections in medium-velocity proton collisions with He and H₂.
Physical Review A. Roč. 102, č. 3 (2020), s. 1-13, č. článku 032818. ISSN 2469-9926. E-ISSN 2469-9934
R&D Projects: GA MŠMT EF16_019/0000789
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institutional support: RVO:68378271
Keywords : single-ionization * impact ionization * momentum spectroscopy * recoil-ion * helium * continuum * atoms
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.140, year: 2020
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevA.102.032818

We have measured fully momentum-analyzed recoiling target ions and scattered projectiles, produced in ionization of He and H-2 by 75 keV proton impact, in coincidence. The momentum of the ejected electrons was deduced from momentum conservation. From the data we extracted fully differential ionization cross sections as a function of the polar electron emission angle (for fixed electron energies) and as a function of the electron energy (for fixed electron emission angles). Comparison between experiment and various distorted wave calculations confirms that under kinematic conditions where the post-collision interaction plays an important role, the few-body dynamics underlying the ionization process are still poorly understood.
Permanent Link: http://hdl.handle.net/11104/0316867