Threshold photoelectron-threshold photoelectron coincidence
(TPEsCO) studies in the region of the Kr 3d shake up satellites

P. Bolognesi #, M.C.A. Lopes #, M.A. MacDonald *, G.C. King#, L.
Avaldi^2, G. Dawber#

# Department of Physics and Astronomy, Manchester University,
   Manchester M13 9PL, UK
* Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK
^2 IMAI del CNR, Area della Ricerca di Roma, CP10-00016 Monterotondo,

The decay of the Kr 3d^(-1) 4p^(-1) np shake up satellite states to
the triple ion state is observed in a TPEsCO experiment. The Kr^(2+)
3d^(-1) 4p^(-1) states are also observed and resolved directly for the
first time.