title: Low energy positron interactions with uracil--total scattering, positronium formation, and differential elastic scattering cross sections.
abstract: Measurements of the grand total and total positronium formation cross sections for positron scattering from uracil have been performed for energies between 1 and 180 eV, using a trap-based beam apparatus. Angular, quasi-elastic differential cross section measurements at 1, 3, 5, 10, and 20 eV are also presented and discussed. These measurements are compared to existing experimental results and theoretical calculations, including our own calculations using a variant of the independent atom approach.
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: E K
authors: EK
authors: Anderson
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: R A
authors: RA
authors: Boadle
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: J R
authors: JR
authors: Machacek
authors: ARC Centre for Antimatter-Matter Studies, Flinders University, GPO Box 2100, Adelaide, 5001 SA, Australia.
authors: L
authors: L
authors: Chiari
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: C
authors: C
authors: Makochekanwa
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: S J
authors: SJ
authors: Buckman
authors: ARC Centre for Antimatter-Matter Studies, Flinders University, GPO Box 2100, Adelaide, 5001 SA, Australia.
authors: M J
authors: MJ
authors: Brunger
authors: Instituto de Fısica Fundamental, Consejo Superior de Investigationes Cientıficas (CSIC), Serrano 113-bis, E-28006 Madrid, Spain.
authors: G
authors: G
authors: Garcia
authors: Departamento de Fısica Atomica, Molecular y Nuclear, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
authors: F
authors: F
authors: Blanco
authors: Department of Chemistry, Science Institute, University of Iceland, Reykjavík 107, Iceland.
authors: O
authors: O
authors: Ingolfsson
authors: ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200, Australia.
authors: J P
authors: JP
authors: Sullivan
mesh_terms: D004548:Elasticity; D004583:Electrons; D008958:Models, Molecular; D011789:Quantum Theory; D014498:Uracil / Q000737:chemistry*
chemical_list: D014498:Uracil