Direct Imaging of Transient Fano Resonances in N2 Using Time-, Energy-, and Angular-Resolved Photoelectron Spectroscopy

Martin Eckstein, Chung-Hsin Yang, Fabio Frassetto, Luca Poletto, Giuseppe Sansone, Marc J. J. Vrakking, and Oleg Kornilov
Phys. Rev. Lett. 116, 163003 – Published 20 April 2016

Abstract

Autoionizing Rydberg states of molecular N2 are studied using time-, energy-, and angular-resolved photoelectron spectroscopy. A femtosecond extreme ultraviolet pulse with a photon energy of 17.5 eV excites the resonance and a subsequent IR pulse ionizes the molecule before the autoionization takes place. The angular-resolved photoelectron spectra depend on pump-probe time delay and allow for the distinguishing of two electronic states contributing to the resonance. The lifetime of one of the contributions is determined to be 14±1fs, while the lifetime of the other appears to be significantly shorter than the time resolution of the experiment. These observations suggest that the Rydberg states in this energy region are influenced by the effect of interference stabilization and merge into a complex resonance.

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  • Received 29 November 2015

DOI:https://doi.org/10.1103/PhysRevLett.116.163003

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Martin Eckstein1, Chung-Hsin Yang1, Fabio Frassetto2, Luca Poletto2, Giuseppe Sansone3, Marc J. J. Vrakking1, and Oleg Kornilov1,*

  • 1Max Born Institute, Max-Born-Straße 2A, 12489 Berlin, Germany
  • 2National Research Council—Institute of Photonics and Nanotechnologies (CNR-IFN), via Trasea 7, I-35131 Padova, Italy
  • 3Dipartimento di Fisica, Politecnico, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

  • *kornilov@mbi-berlin.de

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Issue

Vol. 116, Iss. 16 — 22 April 2016

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