On the measurement of ionization cross sections for antiproton impact on atoms and molecules

Triply Differential Single Ionization of Argon: Charge Effects for Positron and Electron Impact

“…As a final note, recent advancements in antiproton experiments [20] indicate that within the next decade similar comparisons between proton and antiproton impact can be made. Those data, plus positron and electron impact data such as in the present study, will allow very detailed investigations to be made of both charge and mass effects on the interaction dynamics.…”

Differential ionization in antiproton–hydrogen collisions within the convergent-close-coupling approach

“…In addition to the coplanar TDCS one can consider out-ofplane kinematics, where the electron ejected with momentum κ is observed in directions that do not lie in the scattering plane formed by the incident and scattered projectile momenta, k i and k f , respectively. Such kinematically complete differential ionization experiments on antiproton-hydrogen collisions are not yet presently available but they are planned for the near future [36,53]. Figure 5 displays our theoretical predictions for the out-of-plane TDCS for the electrons ejected with E e = 2 eV and the antiproton with an impact energy E p = 30, 50, 200 and 500 keV scattered to the angle θ p = 0.2 mrad.…”

“…Some differential measurements of antiproton-helium collisions have already been carried out at this facility using the experimental technique of cold-target recoil-ion momentum spectroscopy [20]. More detailed experiments are planned for the hydrogen targets as well [36]. In addition, the future international collaborations such as Low-energy Antiproton and Ion Research (FLAIR) [37], and the Facility for Antiproton and Ion Research (FAIR) [38] will be able to provide accurate data for total, as well as any differential cross sections up to the TDCS for slow antiprotons ionizing a variety of targets including atomic hydrogen.…”

Design of the injector for a small recycling ring on the CERN-AD

“…He, Ar, etc.) in the very low energy region of 3-30 keV [12,13,14]. The partial cross section measurements will be made by utilizing a reaction microscope [15], which will be incorporated into the recycling ring.…”