Attosecond electronic dynamics of core-excited states of N<sub>2</sub>O in the soft x-ray region

ORAL

Abstract

We present a combined experimental and theoretical study of the transient absorption spectroscopy of N2O at the N K edge (400 eV) by employing an attosecond soft x-ray pulse and an overlapping intense femtosecond infrared pulse. We demonstrate that tunnel ionization of the core-excited states of neutral N2O causes prominent half-cycle oscillations in the absorption signal. In addition, we observe the appearance of the N2O+ signal with increasing delay as a result of the tunneling ionization of N2O, thereby allowing us to follow the tunneling process in real time. We have developed theoretical models that allow us to interpret and reproduce the main trends of the experimental data

*The experimental part of this work was funded by Grant-in-Aid for Scientific Research (S) No. 18H05250 of the Japan Society for the Promotion of Science, MEXT Quantum Leap Flagship Program (MEXT Q-LEAP) Grant No. JPMXS0118068681, U.S. Air Force Office of Scientific Research (AFOSR) Grant No. FA9550-20-1-0295, and the National Science Foundation (NSF) (Grant No. 1806575). The theoretical part was funded by the NSF under Grants No. PHY-1912507 (L.A.) and No. PHY-2012078 (N.D.). L.A. acknowledges support from DOE Career Grant No. DE-SC0020311.

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Publication: PHYSICAL REVIEW RESEARCH 3, 043222 (2021)

Presenters

  • Nicolas Douguet

    • Kennesaw State University
    • Kennesaw

Authors

  • Nicolas Douguet

    • Kennesaw State University
    • Kennesaw

  • Nariyuki Saito

    • The Institute for Solid State Physics, The University of Tokyo

  • Seunghwoi Han

    • CREOL and Department of Physics, University of Central Florida

  • Yi Wu

    • University of Central Florida

  • Andrew B Chew

    • University of Central Florida

  • Nobuhisa Ishii

    • Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology

  • Teruto Kanai

    • The Institute for Solid State Physics, The University of Tokyo

  • Barry I Schneider

    • National Institute of Standards and Tech
    • National Institute of Standards and Technology

  • Jeppe Olsen

    • Aarhus University, Denmark
    • Department of Chemistry, qLEAP Center for Theoretical Chemistry
    • Department of Chemistry, Aarhus University, Denmark, EU.

  • Luca Argenti

    • University of Central Florida
    • CREOL & Department of Physics, University of Central Florida, Orlando, Florida 32816, USA;

  • Zenghu Chang

    • University of Central Florida

  • Jiro Itatani

    • The Institute for Solid State Physics, The University of Tokyo