Using momentum-resolved electron-ion multicoincidence spectroscopy, we have investigated interatomic Coulombic decay (ICD) in the heteronuclear NeAr dimer following Ne 1s Auger decay. The measured intensity ratio for the three ICD transitions Ne2+(2s-12p-1′1P)Ar to Ne2+(2p-2′1S)-Ar+(3p-1), Ne2+(2s-12p-1′1P)Ar to Ne2 +(2p-2′1D)-Ar+(3p-1), and Ne2+(2s-12p-1′3P)Ar to Ne2 +(2p-2′3P)-Ar+(3p-1) reasonably agree with predictions. The kinetic energy release distribution for the fragmentation to Ne2+(2p-2′1D)-Ar +(3p-1) after the ICD transition from singlet Ne2 +(2s-12p-1′1P)Ar state, which is a mirror image of the kinetic energy distribution of the emitted ICD electrons, suggests that the corresponding ICD rate is roughly two times lower than predicted by ab initio calculations.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2011 May 17|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics