Electron correlation and short-range dynamics in attosecond angular streaking

Armstrong, G. S. J.; Clarke, D. D. A.; Benda, J.; Brown, A. C. and van der Hart, H. W. (2020). Electron correlation and short-range dynamics in attosecond angular streaking. Physical Review A, 101(4), article no. 041401(R).

DOI: https://doi.org/10.1103/PhysRevA.101.041401

Abstract

We employ the R matrix with time-dependence method to study attosecond angular streaking of F−. Using this negative ion, free of long-range Coulomb interactions, we elucidate the role of short-range electron correlation effects in an attoclock scheme. Through solution of the multielectron time-dependent Schrödinger equation, we aim to bridge the gap between experiments using multielectron targets, and one-electron theoretical approaches. We observe significant negative offset angles in the photoelectron momentum distributions, despite the short-range nature of the binding potential. We show that the offset angle is sensitive to the atomic structure description of the residual F atom. We also investigate the response of co- and counter-rotating electrons, and observe an angular separation in their emission

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