A complete postversion of the three-body continuum distorted wave-eikonal initial state approximation for single ionization of multielectron atoms

J.M. MONTI, O.A. FOJÓN, J. HANSSEN Y R.D. RIVAROLA

JAMOP

HINDAWI PUBLISHING CORPORATION

Año: 2010 vol. 2010 p. 1284731 - 1284737

1687-9228

Single electron ionization of helium targets produced by the impact of fast proton beams is investigated. The postversion of the continuum distorted wave-eikonal initial state into a three-body approximation is reformulated, including the dynamic screening produced by the nonionized electron. This dynamic screening is shown to play a main role in the determination of double differential cross-sections. A good agreement is found with predictions obtained employing the prior version of the model, so that post-prior discrepancies are almost eliminated. that post-prior discrepancies are almost eliminated. fferential cross-sections. A good agreement is found with predictions obtained employing the prior version of the model, so that post-prior discrepancies are almost eliminated.