Time-dependent density-functional study of the alignment-dependent ionization of acetylene and ethylene by strong laser pulses

Arthur Russakoff, Sergiy Bubin, Xinhua Xie, Sonia Erattupuzha, Markus Kitzler, Kálmán Varga

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The alignment-dependent ionization of acetylene and ethylene in short laser pulses is investigated in the framework of the time-dependent density-functional theory coupled with Ehrenfest dynamics. The molecular alignment is found to have a substantial effect on the total ionization. Bond stretching is shown to cause an increase of the ionization efficiency, i.e., enhanced ionization, in qualitative agreement with previous theoretical investigations. It is also demonstrated that the enhanced ionization mechanism greatly enhances the ionization from the inner valence orbitals, and the ionization of the inner orbitals is primarily due to their extended weakly bound density tails.

Original languageEnglish
Article number023422
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume91
Issue number2
DOIs
Publication statusPublished - Feb 19 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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