Abstract
Single and double ionization of helium and neon by 1 GeV/u U92+ ion impact was explored in a kinematically complete experiment using multi-electron recoil-ion momentum spectroscopy. Cross sections, the emission characteristics of ions and electrons as well as the momentum balance are quantitatively discussed in terms of photoionization of the atom in the field of virtual photons generated by the projectile (Weizsäcker-Williams 1934). Electron-electron correlation after double ionization of neon as well as a first result from the recoil-ion momentum spectrometer at the ESR of GSI are presented.
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