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Our research primarily focuses on theoretical studies of scattering phenomena involving multiple target atoms and molecules. We examine interactions where both positrons (electron antiparticles) and electrons collide with diverse targets. Our investigations cover rare gas atoms, alkali metals, alkaline-earth elements, and select light molecules. We've computed cross sections for elastic/inelastic scattering and inner-shell ionization caused by positron and electron impacts, comparing these findings with experimental results.
Additional areas of study involve negative ion formation through dissociative electron attachment in various light molecules. This negative ion generation shows significant enhancement when molecules are initially in rovibrationally excited states. Expanding this work, we've determined cross sections for dissociative attachment, vibrational excitation, and molecular dissociation (studying H2 with its five isotopes, LiH, and two Li2 isotopes) during electron collisions. These atomic and molecular interaction processes hold substantial importance in astronomical and astrophysical contexts