Ab initiocalculation of core-valence-valence Auger spectra in closed shell systems

Three-Body and One-Body Channels of the Auger Core-Valence-Valence decay: Simplified Approach

We propose a computationally simple model of Auger and APECS line shapes from open-band solids. Part of the intensity comes from the decay of unscreened coreholes and is obtained by the two-body Green’s function G (2) ω , as in the case of filled bands. The rest of the intensity arises from screened core-holes and is derived using a variational description of the relaxed ground state; this invo...

Valence-hole localization in core-valence doubly ionized states of ionic molecules and its impact on KLV Auger spectroscopy

The complete spectra of core-valence dicationic states, i.e., states with one vacancy in the core and one in the valence shell, of the molecules BF3 , AlF3 , BCl3, and AlCl3, are investigated by the Green’s-function method. An analysis of the double-hole density in the corresponding correlated states shows that when the core hole is on a ligand ~halogen! atom, the valence hole is also strongly ...

Studies of valence shell photoionization of Cl2

Stabilization of nuclear isovector valence-shell excitations.

Excited states in 138Ce have been studied via the 12C(138Ce, 138Ce*) Coulomb excitation reaction at 480 MeV. Relative cross sections have been determined from the gamma-ray yields observed with Gammasphere. The E2 and M1 strength distributions between the lowest six 2+ states up to 2.7 MeV enables us to identify the 2(4)+ state in 138Ce as the dominant fragment of the one-phonon 2(1,ms)+ mixed-...

Multiplet-changing Auger transitions in valence double photoionization.