Angle-resolved time delays for shake-up ionization of helium
| Autor: | Stefan Donsa, Manuel Ederer, Joachim Burgdörfer, Renate Pazourek, Iva Březinová |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Field (physics) Atomic Physics (physics.atom-ph) Attosecond FOS: Physical sciences Photoionization 01 natural sciences Physics - Atomic Physics 010305 fluids & plasmas Ion Dipole Polarizability Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Physics::Atomic Physics Atomic physics 010306 general physics Magnetic dipole–dipole interaction |
| DOI: | 10.48550/arxiv.2005.12654 |
| Popis: | Recent angle-resolved experiments using reconstruction of attosecond bursts by interference of two-photon transitions (RABBITT) have shown that the photoionization time delay depends on the emission angle of the photoelectron. In this paper we demonstrate that for photoemission from helium accompanied by shake-up (correlation satellites) the angular variation of the time delay is dramatically enhanced by the dipolar coupling between the photoelectron and the highly polarizable residual ion in the IR field. We show that the additivity rule for the time delays due to the atomic potential, the continuum-continuum coupling by the IR field, and due to this two-electron process remains valid for angle-resolved RABBITT. Our results are expected to be also applicable to other multielectron systems that are highly polarizable or feature a permanent dipole moment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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