Fano-ADC theory

APPLICATIONS OF FANO-ADC THEORY TO AUGER DECAY IN THE MULTIPLY IONIZED SYSTEMS... 

Let us describe several recent applications of the Fano-ADC theory to Auger decay in multiply ionized systems. We shall start with the simplest problem of this kind - effect of a single neighboring charge on the rate of atomic Auger decay. Then, we shall explore the effect of a spectator vacancy residing... 

Quantitative results for the collective interatomic decay in (4s-1,4s-1) (Kr+)2Ar have been obtained in Ref. [54] using Fano-ADC theory. The results for T as a function of the Kr-Kr distance (at R][ 2 Ar = 3.3A [54]) are shown in Figure 6.7a. At the equilibrium Kr-Kr distance (R = 4.0A [54]), the collective decay width reaches 1.9 meV for triplet and 2.0 meV for singlet doubly ionized states, which corresponds to lifetimes around 300 fs. The predicted lifetime is five orders of magnitude shorter than the one of the... 

On the methodology side, it would be important to generalize the Fano-ADC theory of Section 2 to the case of triple ionization using the second-order ADC scheme of Ref. [80]. Moreover, the problem of different level of treatment of adjacent excitation classes within the existing ADC... 

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