title: Total, elastic, and inelastic cross sections for positron and electron collisions with tetrahydrofuran.
abstract: We present total, elastic, and inelastic cross sections for positron and electron scattering from tetrahydrofuran (THF) in the energy range between 1 and 5000 eV. Total cross sections (TCS), positronium formation cross sections, the summed inelastic integral cross sections (ICS) for electronic excitations and direct ionization, as well as elastic differential cross sections (DCS) at selected incident energies, have been measured for positron collisions with THF. The positron beam used to carry out these experiments had an energy resolution in the range 40-100 meV (full-width at half-maximum). We also present TCS results for positron and electron scattering from THF computed within the independent atom model using the screening corrected additivity rule approach. In addition, we calculated positron-impact elastic DCS and the sum over all inelastic ICS (except rotations and vibrations). While our integral and differential positron cross sections are the first of their kind, we compare our TCS with previous literature values for this species. We also provide a comparison between positron and electron-impact cross sections, in order to uncover any differences or similarities in the scattering dynamics with these two different projectiles.
authors: ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia.
authors: Luca
authors: L
authors: Chiari
authors: Emma
authors: E
authors: Anderson
authors: Wade
authors: W
authors: Tattersall
authors: J R
authors: JR
authors: Machacek
authors: Prasanga
authors: P
authors: Palihawadana
authors: Casten
authors: C
authors: Makochekanwa
authors: James P
authors: JP
authors: Sullivan
authors: Gustavo
authors: G
authors: García
authors: Francisco
authors: F
authors: Blanco
authors: R P
authors: RP
authors: McEachran
authors: M J
authors: MJ
authors: Brunger
authors: Stephen J
authors: SJ
authors: Buckman
mesh_terms: D004548:Elasticity; D004583:Electrons; D005663:Furans / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D055620:Optical Phenomena; D013816:Thermodynamics
chemical_list: D005663:Furans; C018674:tetrahydrofuran