Dissociative ionization of a large molecule studied by intense phase-controlled laser fields

Hideki Ohmura, Naoaki Saito, Hidehiko Nonaka, Shingo Ichimura

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We report on the dissociative ionization of a large polyatomic molecule induced by quantum control of tunneling ionization. The directionally asymmetric tunneling ionization induced by phase-controlled two-color (ω+2ω) intense (1.0× 1013 W cm2) laser fields with 130-fs pulses led to selective ionization of oriented molecules, which reflect the geometric nature of the highest occupied molecular orbital. We conclude that in the case of 1-iodohexane the molecular Ammosov-Delone-Krainov model for tunneling ionization is qualitatively valid even for the large polyatomic molecule, and that the nonadiabatic multielectron dynamics, which lead to fragmentation, play a much more important role in molecular cations than in neutral molecules.

Original languageEnglish
Article number053405
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
Publication statusPublished - 2008 May 15


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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