State-Selective Electron Capture for keV He ²⁺ Ions on Helium Collisions Studied by Recoil Momentum Spectroscopy

State-selective electron capture inHe32+Alessi1, Otranto2, Focke3 2011Phys. Rev. A

“…2 as a function of the impact energy. The experimental data from Mergel et al [21] and Zhu et al [9] are included and are seen to match the present data at the very edges of our energy range within the associated error bars. Concerning the theoretical data, Mergel et al found dCTMC results to be in agreement with their data for impact energies in the range 60-250 keV/amu.…”

“…Within the COLTRIMS method, the use of the recoil-ion momentum spectroscopy technique provides direct access to the projectile energy transfer during the process of interest. From the recoil-ion longitudinal momentum distribution, state-selective capture cross sections for the present collision system can be obtained as done by Mergel et al [21] (for collision energies in the range 60-250 keV/amu) and more recently by Zhu et al at (7.5 keV/amu) [9].…”

“…During the past 15 years, the incorporation of the cold-target recoil-ion momentum spectroscopy (COLTRIMS) method in several laboratories worldwide has led to an important advance in the experimental studies of atomic and molecular collisions [1][2][3][4][5][6][7][8][9]. This method allows the measurement of collision events at the fully differential level, providing, in this sense, an unprecedented kinematically complete physical picture for several collision processes.…”