Jump to main content
Jump to site search

Issue 88, 2014
Previous Article Next Article

X-ray induced fragmentation of size-selected salt cluster-ions stored in an ion trap

Author affiliations

Abstract

A method for spectroscopic characterization of free ionic clusters and nanoparticles utilizing X-ray synchrotron radiation is presented. We demonstrate that size-selected ammonium bisulphate cluster ions, NH4+(NH4HSO4)n, captured in a linear ion trap, exhibit well-defined core-level absorption edges in the reconstructed fragment-ion abundance spectra. In addition to the specific photo-fragmentation pathways observed at the N1s-, O1s- and S2p-edges, dissociation also occurs as a consequence of clusters colliding with helium present as buffer gas in the ion trap. Separate off-beam experiments were conducted to establish the activation kinetics of these collision induced dissociation processes. Furthermore, it is demonstrated that the electrons released upon photoionization of background helium are too few in number to produce multiply charged cluster ions, and thereby induce fragmentation of the salt clusters, to any significant degree. The mechanisms for photon absorption and subsequent cluster fragmentation are analysed and discussed. In addition to its inherent element specificity, the method holds promise for cluster structure elucidation resulting from the sensitivity of the near edge absorption structure to the local chemical environment of the excited atom.

Graphical abstract: X-ray induced fragmentation of size-selected salt cluster-ions stored in an ion trap

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 May 2014, accepted on 17 Sep 2014 and first published on 30 Sep 2014


Article type: Paper
DOI: 10.1039/C4RA09787D
Citation: RSC Adv., 2014,4, 47743-47751
  • Open access: Creative Commons BY license
  •   Request permissions

    X-ray induced fragmentation of size-selected salt cluster-ions stored in an ion trap

    M. J. Ryding, A. Giuliani, M. Patanen, J. Niskanen, G. Simões, G. B. S. Miller, E. Antonsson, T. Jokinen, C. Miron, O. Björneholm, K. Hansen, K. J. Børve and E. Uggerud, RSC Adv., 2014, 4, 47743
    DOI: 10.1039/C4RA09787D

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements