title: Dynamical (e,2e) studies of tetrahydropyran and 1,4-dioxane.
abstract: We present experimental and theoretical results for the electron-impact ionization of the highest occupied molecular orbitals of tetrahydropyran and 1,4-dioxane. Using an (e,2e) technique in asymmetric coplanar kinematics, angular distributions of the slow ejected electron, with an energy of 20 eV, are measured when incident electrons at 250 eV ionize the target and scatter through an angle of either -10° or -15°. The data are compared with calculations performed at the molecular 3-body distorted wave level. Fair agreement between the theoretical model and the experimental measurements was observed. The similar structures for these targets provide key insights for assessing the limitations of the theoretical calculations. This study in turn facilitates an improved understanding of the dynamics in the ionization process.
authors.affiliation: School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
authors.forename: J D
authors.initials: JD
authors.lastname: Builth-Williams
authors.affiliation: School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
authors.forename: G B
authors.initials: GB
authors.lastname: da Silva
authors.affiliation: School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
authors.forename: L
authors.initials: L
authors.lastname: Chiari
authors.affiliation: School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
authors.forename: D B
authors.initials: DB
authors.lastname: Jones
authors.affiliation: Department of Physics, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
authors.forename: Hari
authors.initials: H
authors.lastname: Chaluvadi
authors.affiliation: Department of Physics, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
authors.forename: D H
authors.initials: DH
authors.lastname: Madison
authors.affiliation: School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
authors.forename: M J
authors.initials: MJ
authors.lastname: Brunger
mesh_terms: D001696:Biomechanical Phenomena; D004146:Dioxanes / Q000737:chemistry*; D004583:Electrons; D011714:Pyrans / Q000737:chemistry*; D011789:Quantum Theory; D013816:Thermodynamics
chemical_list: D004146:Dioxanes; D011714:Pyrans; C025223:1,4-dioxane