Electron-capture cross section at near-thermal collision energies forSi4++D

Calculation of Rate Coefficients for Electron Capture in Collisions of O2+and N2+Ions with H

“…Our cross sections are closer to those reported by Heil et al (1983) in the region 1 < E < 10 eV, where we obtain a plateau that was not found in the calculation of Honvault et al (1995). For E < 0:1 eV, our cross section rapidly increases, as expected from the Langevin model (see Pieksma et al 1996, and references therein). Sharp peaks are also noticeable that are due to shape resonances in the entrance channel potential.…”

Isotope effect in charge-transfer collisions of H with He+

“…These authors interpreted this effect with the Landau-Zener-Stueckelberg model and suggested that it could occur at energies as high as 1 keV/amu for some systems. Moreover, it was established that the cross section decreases with increasing system reduced mass [7], a behavior that has since been observed in other charge-transfer collisions [8,9]. Recently, Stolterfoht et al [10,11] observed a very important isotope effect in collisions between He 2+ and H, the replacement of H by D or T leading to a variation of the cross section for energies as high as 300 eV/amu.…”

The early years of Pierre: importance of his work for Astrophysics and other fields of Physics

“…But almost all of these applications made use of his methods. To illustrate such an application, a good example ( figure 3) is provided by the first detailed experimental results [11], obtained at Oak Ridge National Laboratory. Using a sophisticated merged beam technique enabling the study of low energy collisions.…”