title: Coherent control of collision processes: Penning versus associative ionization.
abstract: Coherent control theory is applied to the control of Ne*(3s,(3)P2)+Ar((1)S0) collisions and computations are shown that display extensive control over these processes. Indeed we demonstrate that it is possible to essentially turn on and off the cross sections for both the Penning and associative ionization processes. This facility arises from the interference between matter waves induced by creating a linear superposition of the degenerate M={-2,-1,0,1,2} Zeeman sublevels of the Ne*(3s,(3)P2) target atom. The computations, conducted at collision energies in the 1-8 kcal/mole range, are based on combining, within the "rotating atom approximation," empirically derived and ab initio ionization widths.
authors.affiliation: Chemical Physics Theory Group, Department of Chemistry, University of Toronto, Toronto M5S3H6, Canada.
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Arango
authors.forename: Moshe
authors.initials: M
authors.lastname: Shapiro
authors.forename: Paul
authors.initials: P
authors.lastname: Brumer