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2021 Fiscal Year Annual Research Report

Efficient simulation of coupled electronic and nuclear motion in molecules in intense laser fields

Research Project

Project/Area Number 18K05024
Research InstitutionThe University of Tokyo

Principal Investigator

LOETSTEDT ERIK  東京大学, 大学院理学系研究科(理学部), 准教授 (80632984)

Project Period (FY) 2018-04-01 – 2022-03-31
KeywordsTDSE / Multi-config. methods / Time-dependent dynamics
Outline of Annual Research Achievements

During the fiscal year 2021, I have finalized the research projects started within the current Kakenhi grant, and made a number of presentations at domestic and international scientific gatherings. The presentations have been made mainly on the work done together with M. F. Ciappina on the tunnelling ionization rate of He-like atomic ions having charge number Z up to Z = 36. The theoretically obtained ionization rates can be used in conjunction with experimental measurements of the yield of atomic ions to accurately estimate the peak field intensity of very intense laser pulses.
In addition, I contributed theoretically to the analysis of the attosecond-pulse-train-induced ultrafast fragmentation of C2H2 (acetylene) by calculating potential energy curves of the acetylene cation. The theoretical analysis revealed that after the ionization of C2H2, the acetylene cation C2H2+ can make a resonant pi-pi* transition by the absorption of the seventh harmonic of the fundamental laser field, leading to prompt C-C bond breaking.

Remarks

Publications related to the present project are announced at the web page of the Yamanouchi laboratory.

  • Research Products

    (6 results)

All 2021 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Int'l Joint Research] Czech Academy of Sciences/ELI-Beamlines(チェコ)

    • Country Name
      CZECH
    • Counterpart Institution
      Czech Academy of Sciences/ELI-Beamlines
  • [Journal Article] 300 attosecond response of acetylene in two-photon ionization/dissociation processes2021

    • Author(s)
      Matsubara Takuya、Fukahori Shinichi、Loetstedt Erik、Nabekawa Yasuo、Yamanouchi Kaoru、Midorikawa Katsumi
    • Journal Title

      Optica

      Volume: 8 Pages: 1075~1083

    • DOI

      10.1364/OPTICA.426071

    • Peer Reviewed
  • [Presentation] Static-field ionization rates of He-like ions by MCTDHF method2021

    • Author(s)
      Erik Loetstedt, Marcelo F. Ciappina, and Kaoru Yamanouchi
    • Organizer
      Annual Meeting of the Chemical Society of Japan
  • [Presentation] Static field ionization rates of He-like ions for intensity measurements of ultraintense laser pulses2021

    • Author(s)
      Erik Loetstedt, Marcelo F. Ciappina, and Kaoru Yamanouchi
    • Organizer
      36th Symposium on Chemical Kinetics and Dynamics
    • Int'l Joint Research
  • [Presentation] Tunnel and over-the-barrier ionization of He-like ions2021

    • Author(s)
      Erik Loetstedt, Marcelo F. Ciappina, and Kaoru Yamanouchi
    • Organizer
      PACIFICHEM
    • Int'l Joint Research
  • [Remarks] Web page of Yamanouchi laboratory

    • URL

      http://www.yamanouchi-lab.org/e/index.html

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Published: 2022-12-28  

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