Eur. Phys. J. D 29, 17-19 (2004)
https://doi.org/10.1140/epjd/e2004-00014-6

On the observation of the fine structure effect in non-relativistic (e, 2e) processes

¹ Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, UK
² Department of Aeronautics and Space Engineering, Tohoku University, 01 Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8579, Japan
³ Department of Applied Mathematics and Theoretical Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK
⁴ Department of Physics, University of Missouri-Rolla, MO 65401, USA
⁵ Department of Physics, Old Dominion University, Norfolk, Virginia 23529-0116, USA

Corresponding author: ^a m.s.kampp@damtp.cam.ac.uk

Received: 20 October 2003
Revised: 1 December 2003
Published online: 10 February 2004

Abstract

The spin asymmetry arising in an (e,2e) process using spin-polarized incoming electrons with non-relativistic energies is shown to be dominated by the fine structure effect if a suitable kinematical regime is chosen. Calculations in the distorted wave Born approximation (DWBA) for both the triple differential cross-section and the spin asymmetry are presented for the inner shell ionization of argon. This process would provide an accessible target for existing experimental set-ups.