Angle-resolved time delay in photoemission of neon

Abstract

We investigate theoretically the relative time delay of photoelectrons originating from the different subshells (2s and 2p) of neon. This quantity was measured via attosecond streaking and studied theoretically by Schultze et al. [Science 328, 1658 (2010)]. A substantial discrepancy was found between the measured and the calculated values of the relative time delay. Several theoretical studies has been put forward to resolve this issue, e.g. by including correlation effects. In the present paper we explore the directional dependence of the photoelectron emission and the consequences for the inferred time delay. Our quantum mechanical calculations for an electron subject to laser fields and an effective single particle potential show that the time delay is indeed strongly angular dependent. Compared to strict forward emission we find that accounting for emission within a cone of 45 deg aperture, leads to a substantially increase of the relative time delay.

This paper has been withdrawn by the author due some crucial errors regarding the summation over all m states

References in corpus (5)

• Delay in atomic photoionization
• Time delay between photoemission from the 2p and 2s subshells of Neon
• Time delays for attosecond streaking in photoionization of neon
• Study of attosecond delays using perturbation diagrams and exterior complex scaling
• Time delay in the recoiling valence-photoemission of Ar endohedrally confined in C${}_{60}$

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