caa a22 4500 445865148 CHVBK 20180317145455.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1140/epjd/e2011-20333-7 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20333-7 Experimental determination of the scattering length for positron scattering from krypton [Elektronische Daten] [A. Zecca, L. Chiari, E. Trainotti, D. Fursa, I. Bray, M. Brunger] We report the first experimentally supported determination of the scattering length for positron scattering from krypton. Our result of −10.3±1.5 a.u. compares favourably with that from a convergent close coupling calculation performed as a part of this investigation (−9.5a.u.), and also with an earlier many body theory calculation of −10.1a.u. from Gribakin and Ludlow [Phys. Rev. A 70, 032720 (2004)] and a polarized-orbital result of −10.4a.u. from McEachran etal. [J. Phys. B 13, 1281 (1980)]. The present experimental scattering length supports the existence of a low-lying positron-krypton virtual state (Surko etal. [J. Phys. B 38, R57 (2005)]) at an energy ε=0.13eV. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Zecca A. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut Chiari L. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut Trainotti E. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut Fursa D. ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, 6845, Perth, WA, Australia aut Bray I. ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, 6845, Perth, WA, Australia aut Brunger M. ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, 5001, Adelaide, Australia aut The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 317-321 1434-6060 64:2-3<317 2011 64 10053 https://doi.org/10.1140/epjd/e2011-20333-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20333-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zecca A. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut NATIONALLICENCE 700 1- Chiari L. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut NATIONALLICENCE 700 1- Trainotti E. Department of Physics, University of Trento, Povo, 38123, Trento, Italy aut NATIONALLICENCE 700 1- Fursa D. ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, 6845, Perth, WA, Australia aut NATIONALLICENCE 700 1- Bray I. ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, 6845, Perth, WA, Australia aut NATIONALLICENCE 700 1- Brunger M. ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, 5001, Adelaide, Australia aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 317-321 1434-6060 64:2-3<317 2011 64 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer