Outer-shell double photoionization of CH2Cl2

•The shake-off and TS1 processes in the photoionization of the CH2Cl2 are studied.•The fragmentation into two cations dominates the double-photoionization.•The models provide good qualitative description to the experimental data.

In this work the roles of the shake-off and knockout processes in the double photoionization of the CH2Cl2 molecule have been studied. The probabilities for both mechanisms accompanying valence-shell photoionization have been estimated as a function of incident photon energy using Samson's (1990) [5] and Thomas's (1994) [3] models, respectively. The experimental results are in qualitative accord with the models.

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