Ionization branching ratio control with a resonance attosecond clock

Details Ionization branching ratio control with a resonance attosecond clock Ionization branching ratio control with a resonance attosecond clock

2010-04-08

arxiv.org/abs/1004.1266v2

Physics

Atomic Physics

5 pages, 3 figures

Scientific paper

We investigate the possibility to monitor the dynamics of autoionizing states in real time and control the yields of different ionization channels in helium by simulating XUV-pump IR-probe experiments focused on the N=2 threshold. The XUV pulse creates a coherent superposition of doubly excited states which is found to decay by ejecting electrons in bursts. Prominent interference fringes in the photoelectron angular distribution of the $2s$ and $2p$ ionization channels are observed, along with sizable out-of-phase quantum beats in the yields of the corresponding parent ions.

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