Interference shake-up effects in the resonant Auger decay of krypton

Parameters of the resonant 4p 4p –3d ε ℓ Auger effect (RA) following the 3d– n p ( n = 5 , 6 ) excitation in Kr were calculated with taking into account the interference between several resonant and direct non-resonant transition amplitudes. For the first time all individual lines of the extended RA spectrum which comprises both the 4 p 4 ( 1 D ) 5p and the 4 p 4 ( 1 D ) 6p groups of final ionic states were considered. It was revealed that each group contains individual lines where the interference contributions have different signs thus providing a weak interference effect on the average over the whole group. Interference effects are found to be more pronounced in the angular distribution of the RA products.