Characterizing strong-field-induced molecular dynamics employing time-energy-frequency analysis of vibrational wave packet motion

POSTER

Abstract

We employ time-resolved 3D momentum imaging combined with channel- and energy-resolved Fourier spectroscopy to study pathways of strong-field ionization and fragmentation of CH$_{\mathrm{3}}$I, and to map vibrational wave packet dynamics in the intermediate neutral and cationic states. Analyzing the delay-dependent signals of bound parent ions as well as CH$_{\mathrm{3}}^{\mathrm{+}}$ and I$^{\mathrm{+n}}$ ($n=$1,2,3) ionic fragments recorded in a pump-probe measurement with two 25 fs, 780 nm laser pulses, we disentangle different reaction channels based on the measured charge states, kinetic energies and angular distributions. Energy-resolved Fourier spectra and the absolute phases of vibrational wave packets extracted from these delay-dependent measurements provide specific information about the intermediate states contributing to particular reaction pathways.

Authors

  • Y. Malakar

    J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, Kansas State University

  • Wright Lee Pearson

    J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA

  • B. Kaderiya

    Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, J. R. Macdonald Laboratory, Department of Physics, Kansas State University

  • Mohammad Zohrabi

    J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA

  • Kanaka Raju P.

    Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, KS 66506 USA

  • F. Ziaee

    Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA

  • I. Ben-Itzhak

    J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506 USA, Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, J. R. Macdonald Laboratory, Physics Department, Kansas State University, J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, KS 66506 USA

  • D. Rolles

    J.R. Macdonald Laboratory, Kansas State University, USA, Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, J. R. Macdonald Laboratory, Department of Physics, Kansas State University

  • A. Rudenko

    Kansas State University, J. R. Macdonald Laboratory, Department of Physics, Kansas State University, USA, J. R. Macdonald Laboratory, Department of Physics, Kansas State University

  • Shan Xue

    School of Nuclear Science and Technology, Lanzhou University, China

  • Anh-Thu Le

    Department of Physics, Missouri University of Science and Technology, USA