The Scattering of Positrons and Positronium by Atoms in the Close-Coupling Approximation

• Authors: R.N. Hewitt , C.J. Noble , B.H. Bransdfen
• Languages of publication: EN

Abstracts

EN

We present some recent results obtained within the close-coupling approximation for both positron and positronium scattering by atoms. We begin by discussing a generalization of the method of Vincent and Phatak to study the formation of Ps- in Ps collisions with H(1s) in a simplified model. The important result of this calculation is that the overall Coulomb interaction which is present in the rearrangement channel is treated exactly. We also present results for positronium formation and ionization for positron scattering by argon atoms. The present calculations are for transitions from the Αr(3s^{2}) subshell and show the importance of the coupling to the continuum.

Keywords

EN

36.10.-k; 34.70.+e

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 88
• Issue: 1
• Pages: 139-145

Dates

published

1995-07

Contributors

author

R.N. Hewitt

• Physique Théorique, Université Libre de Bruxelles, Campus Plaine CP 227, Boulevard du Triomphe, 1050 Bruxelles, Belgium

author

C.J. Noble

• DRAL Daresbury Laboratory, Daresbury, Warrington, WA4 4ΑD, U.K.

author

B.H. Bransdfen

• Department of Physics, University of Durham, South Road, Durham, DH1 3LE, U.K.