Raff, Lionel MischaRangarajan, Radha2015-10-192015-10-191975-12-01http://hdl.handle.net/20.500.14446/20123application/pdfCopyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.I. Study of the Effect of Integration Step Size in Quasiclassical Trajectory Calculations II. Study of the Role of Vibrational Energy in Reactive Collisions: He + H+? ? HeH+ + H Using Splinefitted AB Initio and DIM Potential-Energy Surfacestext