We have measured fully differential cross sections (FDCS) for ionization in 75-keVp+H2 collisions for ejected electron speeds close to the projectile speed. The data were analyzed in dependence on both the electron emission angle and the projectile scattering angle. Pronounced postcollisional effects between the projectile and the ejected electrons were observed. Significant differences between experiment and theory and between two conceptually very similar theoretical models were found. This shows that in the region of electron-projectile velocity-matching the FDCS is very sensitive to the details of the underlying few-body dynamics.
M. Dhital et al., "Few-Body Dynamics Underlying Postcollision Effects in the Ionization of H₂ by 75-KeV Proton Impact," Physical Review A, vol. 99, no. 6, American Physical Society (APS), Jun 2019.
The definitive version is available at https://doi.org/10.1103/PhysRevA.99.062710
Keywords and Phrases
Electron emission; Ionization, Body dynamics; Ejected electrons; Fully differential cross sections; Post-collision; Projectile speed; Projectile velocity; Proton impact; Scattering angles, Electrons
International Standard Serial Number (ISSN)
Article - Journal
© 2019 American Physical Society (APS), All rights reserved.
01 Jun 2019