Simultaneous versus sequential two-photon double electron ejection from He-
(2005) International Conference on Electron and Photon Impact Ionization and Related Topics — Location: Louvain la Neuve(Belgium) (1.July.2004)
Files
No attached file found for this publication.
Details
- Authors
- Abstract
- The 1+1 photon resonance-enhanced double ionisation of He has been observed for the first time in the interaction of a fast ion beam with a pulsed laser beam between 375 and 425 nm. Although a clear enhancement of the He+ yield is observed above the 1s3s S-3 threshold, a minimum is found at the exact location of all three photodetachment resonances located in this range. This pleads against the sequential ionisation model. The 1s3s4S S-4 resonance located below the 1s3s threshold appears to be ideally suited for the demonstration of electron correlation effects accompanying their simultaneous ejection. A careful analysis of the spectrum is needed, as spurious resonances existing in the 1+1 REMPI of He(2(3)S) and He(2(3)P) add up to the total ion yield.
- Affiliations
Citations
Brouri, M., & Urbain, X. (2005). Simultaneous versus sequential two-photon double electron ejection from He-. Institute of Physics Conference Series (Online), 183, 123-130. https://hdl.handle.net/2078.5/214543 (Original work published 2005)