The interaction between the projectile and the target core in single ionization of helium by 100 MeV/u C$^{6+}$ and 1 GeV/u U$^{92+}$ ions

Details The interaction between the projectile and the target core in single ionization of helium by 100 MeV/u C$^{6+}$ and 1 GeV/u U$^{92+}$ ions The interaction between the projectile and the target core in single ionization of helium by 100 MeV/u C$^{6+}$ and 1 GeV/u U$^{92+}$ ions

2008-10-28

arxiv.org/abs/0810.4926v1

Physics

Atomic Physics

Scientific paper

We consider single ionization of helium by fast highly charged ions. The ionization is treated as a three-body problem which involves the 'active' target electron, the target core (consisting of the target nucleus and the 'passive' target electron) and the projectile-ion. We show that, unless the transverse momentum transfer in the collision is large, the deviation of the interaction between the projectile and the target core from the purely coulomb law has a weak effect on the ionization. In particular, the account of this deviation does not enable one to get an agreement with experimental data on the fully differential cross section for the electron emission into the so called perpendicular plane.

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