Ionization of helium targets by proton impact: a four-body distorted wave-eikonal initial state model and electron dynamic correlation

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

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS

IOP PUBLISHING LTD

Lugar: Bristol (Inglaterra); Año: 2009 vol. 42 p. 1952011 - 1952017

0953-4075

Single ionization of dielectronic atomic targets by the impact of protons is theoretically investigated. To describe this process, a four-body distorted wave model is proposed where both electrons are considered as active ones. In particular, the case corresponding to ionization of one of the electrons while the other one remains in a bound state of the residual target is analysed. The influence of the dynamic correlation between electrons, which is included in the model through the simultaneous time coupling of their evolutions during the collision, is analysed for the proton–helium system under different physical conditions.