Synopsis The studies of M-shell ionization, or M-X-ray emission, by slow light ions indicate rather strong, up to a factor of 3-5, underestimation of the measured cross sections by the available theoretical calculations describing direct Coulomb ionization by charged particle impact. Guided by our earlier systematic measurements of M-shell ionization cross sections by 1,2H and 3,4He ions we demonstrate here that for the low energy ions, i.e. in the adiabatic regime, the electron binding energy does not saturates at the united atoms (UA) limit, commonly used in the calculations, but instead it has a smaller value corresponding to a transient molecule (MO) formed in collision. This effect, when described in the one-electron molecule approximation, can explain the observed discrepancies between the measured and calculated M-shell ionization cross sections.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - aug. 18 2017|
|Event||30th International Conference on Photonic, Electronic, and Atomic Collisions, ICPEAC 2017 - Cairns, Australia|
Duration: júl. 26 2017 → aug. 1 2017
ASJC Scopus subject areas
- Physics and Astronomy(all)