State-selective electron capture in He+ + He collisions at intermediate energies

Abstract

SynopsisA combined experimental and theoretical study on single capture in 30- and 100-keV He+ on He collisions was performed. We report on experimental state-selective cross sections and projectile angular-differential cross sections and compared with the theoretical results by using dynamic screening classical trajectory Monte Carlo method (dCTMC), and the significance of different electron-electron correlations are discussed. The structure observed in the projectile angular-differential cross sections is explained in terms of Fraunhofer-type diffraction of the He+ projectile de Broglie wave.