Doubly resonant three-photon double ionization of Ar atoms induced by an EUV free-electron laser

E. V. Gryzlova, Ri Ma, H. Fukuzawa, K. Motomura, A. Yamada, K. Ueda, A. N. Grum-Grzhimailo, N. M. Kabachnik, S. I. Strakhova, A. Rouzée, A. Hundermark, M. J.J. Vrakking, P. Johnsson, K. Nagaya, S. Yase, Y. Mizoguchi, M. Yao, M. Nagasono, K. Tono, T. TogashiY. Senba, H. Ohashi, M. Yabashi, T. Ishikawa

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Abstract

A mechanism for three-photon double ionization of atoms by extreme-ultraviolet free-electron laser pulses is revealed, where in a sequential process the second ionization step, proceeding via resonant two-photon ionization of ions, is strongly enhanced by the excitation of ionic autoionizing states. In contrast to the conventional model, the mechanism explains the observed relative intensities of photoelectron peaks and their angular dependence in three-photon double ionization of argon.

Original languageEnglish
Article number063405
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume84
Issue number6
DOIs
Publication statusPublished - 2011 Dec 5

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Gryzlova, E. V., Ma, R., Fukuzawa, H., Motomura, K., Yamada, A., Ueda, K., Grum-Grzhimailo, A. N., Kabachnik, N. M., Strakhova, S. I., Rouzée, A., Hundermark, A., Vrakking, M. J. J., Johnsson, P., Nagaya, K., Yase, S., Mizoguchi, Y., Yao, M., Nagasono, M., Tono, K., ... Ishikawa, T. (2011). Doubly resonant three-photon double ionization of Ar atoms induced by an EUV free-electron laser. Physical Review A - Atomic, Molecular, and Optical Physics, 84(6), [063405]. https://doi.org/10.1103/PhysRevA.84.063405