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On the surface mapping using individual cluster impacts

Abstract : This paper describes the advantages of using single impacts of large cluster projectiles (e.g., C60 and Au400) for surface mapping and characterization. The analysis of co-emitted time-resolved photon spectra, electron distributions and characteristic secondary ions shows that they can be used as surface fingerprints for target composition, morphology and structure. Photon, electron and secondary ion emission increases with the projectile cluster size and energy. The observed, high abundant secondary ion emission makes cluster projectiles good candidates for surface mapping of atomic and fragment ions (e.g., yield >1 per nominal mass) and molecular ions (e.g., few tens of percent in the 500 < m/z < 1500 range).
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Submitted on : Friday, May 25, 2012 - 3:48:20 PM
Last modification on : Wednesday, September 16, 2020 - 3:59:20 PM

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F. A. Fernandez-Lima, M. J. Eller, J. D. Debord, S. V. Verkhoturov, S. Della-Negra, et al.. On the surface mapping using individual cluster impacts. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2012, 273, pp.270-273. ⟨10.1016/j.nimb.2011.07.092⟩. ⟨in2p3-00701548⟩



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