Radiative charge transfer and interatomic Coulombic decay following direct double photoionization of neon dimers

Abstract

We have investigated charge separation Ne+-Ne+ and Ne2+-Ne+ from Ne2 after direct double photoionization and compared them with those after 1s photoionization followed by KLL Auger decay and also with those after 2p photoionization of Ar 2 followed by LMM Auger decay. The Ne+-Ne+ separation takes place via radiative charge transfer from one-site two-hole states Ne2+(2p4)-Ne, whereas the Ne2+-Ne + separation takes place via interatomic Coulombic decay from one-site two-hole states Ne2+(2s12p5)-Ne. © 2010 IOP Publishing Ltd.