| Themes > Science > Physics > Molecular Physics > Excitation Energy Transfer and Energy Migration > Resonances and negative ions > Highly charged ions and inner hole vacancies in heavy elements |
Inner hole vacancies in heavy elements are in general unstable and decay by electron or photon emission. Accurate X-ray spectroscopy of the emitted photon when the system make a transition between the the K, L and M shells give information about relativistic and radiative effects. During a long time collaboration with the group of Paul Indelicato in Paris we have combined different numerical approaches and calculated a large number of transition energies for elements with nuclear charges ranging from Z=10 -100. Relativistic many-body theory combined with complex rotation has been used to calculate the autoionization rate for vacancy states as well as the energy shift arising due to the possibility for autoionization. Within the Eurotrap Network we
calculate total binding energies of heavy atoms using relativistic
many-body perturbation theory . The electron binding energy gives a
significant contribution to the mass of a heavy atom. Ionic masses can be
measured very accurately (within one part in 1010 - to 108) in ion traps,
e.g. in SMILETRAP at Stockholm University. We have a close collaboration
with the other theory groups within the network; in Paris, Lisboa and Göteborg. |
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