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Jiang YH, Rudenko A, Kurka M, et al. Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation. Phys Rev Lett. 2009;102(12):123002doi: 10.1103/PhysRevLett.102.123002.
Jiang, Y. H., Rudenko, A., Kurka, M., Kühnel, K. U., Ergler, T., Foucar, L., Schöffler, M., Schössler, S., Havermeier, T., Smolarski, M., Cole, K., Dörner, R., Düsterer, S., Treusch, R., Gensch, M., Schröter, C. D., Moshammer, R., & Ullrich, J. (2009). Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation. Physical review letters, 102(12), 123002. https://doi.org/10.1103/PhysRevLett.102.123002
Jiang, Y H, et al. "Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation." Physical review letters vol. 102,12 (2009): 123002. doi: https://doi.org/10.1103/PhysRevLett.102.123002
Jiang YH, Rudenko A, Kurka M, Kühnel KU, Ergler T, Foucar L, Schöffler M, Schössler S, Havermeier T, Smolarski M, Cole K, Dörner R, Düsterer S, Treusch R, Gensch M, Schröter CD, Moshammer R, Ullrich J. Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation. Phys Rev Lett. 2009 Mar 27;102(12):123002. doi: 10.1103/PhysRevLett.102.123002. Epub 2009 Mar 25. PMID: 19392273.
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Phys Rev Lett. 2009 Mar 27;102(12):123002. doi: 10.1103/PhysRevLett.102.123002. Epub 2009 Mar 25.

Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation.

Physical review letters

Y H Jiang, A Rudenko, M Kurka, K U Kühnel, Th Ergler, L Foucar, M Schöffler, S Schössler, T Havermeier, M Smolarski, K Cole, R Dörner, S Düsterer, R Treusch, M Gensch, C D Schröter, R Moshammer, J Ullrich

Affiliations

  1. Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.

PMID: 19392273 DOI: 10.1103/PhysRevLett.102.123002

Abstract

Few-photon multiple ionization of N2 was studied differentially in a reaction microscope using 44 eV, approximately 25 fs, intense ( approximately 10(13) W/cm(2)) photon pulses from FLASH. Sequential ionization is observed to dominate. For various intermediate charge states N(2)(n+0 we find a considerable excess of photons absorbed compared to the minimum number that would energetically be required. Photoionization of aligned N(2)(n+) ions, produced by photon absorption in sequential steps, is explored and few-photon absorption pathways are traced by inspecting kinetic energy releases and fragment-ion angular distributions.

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