The European Physical Journal D

, Volume 43, Issue 1–3, pp 73–76 | Cite as

Electron-ion-coincidence spectra for deep inner-shell excited rare-gas clusters

  • H. MurakamiEmail author
  • H. Iwayama
  • K. Nagaya
  • Y. Ohmasa
  • M. Yao
Structure and Thermodynamics of Free Clusters


Electron-Ion-Coincidence (EICO) and Multiple-Ion Coincidence Momentum Imaging (MICMI) measurements were carried out for deep inner-core excited rare-gas clusters. From MICMI measurements, momentum distributions and time-of-flight (TOF) spectra of daughter ions were obtained for the number of coincident signals, Ncoin, up to 8. The TOF spectra for Ncoin larger than 2 indicate that only singly-charged ions are the products of Coulomb explosion. The observed fragmentation pattern and the momentum distribution of singly-charged daughter ions reveal that the heavier ions have smaller momentum than the monomer ions. This suggests that the heavier ions are produced in the central part of clusters where the Coulomb forces from the surrounding ions are more effectively canceled out. All these results are consistent with the site-dependent decay process predicted recently by us for Kr clusters.


36.40.-c Atomic and molecular clusters 36.40.Qv Stability and fragmentation of clusters 36.40.Wa Charged clusters 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. E. Rühl, Int. J. Mass. Spectr. 229, 117 (2003) CrossRefGoogle Scholar
  2. E. Rühl et al., J. Chem. Phys. 95, 6544 (1991) ADSGoogle Scholar
  3. E. Rühl et al., Z. Phys. D 31, 245 (1994) CrossRefGoogle Scholar
  4. E. Rühl et al., Surf. Rev. Lett. 3, 557 (1996) CrossRefGoogle Scholar
  5. K. Nagaya et al., J. Phys. Soc. Jpn 75, 114801 (2006) CrossRefGoogle Scholar
  6. H. Haberland et al., Phys. Rev. Lett. 67, 3290 (1991) CrossRefADSGoogle Scholar
  7. L.S. Cederbaum et al., Phys. Rev. Lett. 77, 4778 (1997) Google Scholar
  8. R. Santra et al., Phys. Rev. B 64, 245104 (2001) CrossRefADSGoogle Scholar
  9. G. Öhrwall et al., Phys. Rev. Lett. 93, 173401-1 (2004) CrossRefADSGoogle Scholar
  10. H. Iwayama et al., J. Chem. Phys. 126, 024305 (2007) CrossRefGoogle Scholar
  11. R. Karnbach et al., Rev. Sci. Instrum. 64, 2838 (1993) CrossRefADSGoogle Scholar
  12. O.F. Hagena, W. Obert, J. Chem. Phys. 56, 1793 (1972) CrossRefGoogle Scholar
  13. H. Murakami et al., J. Chem. Phys. (accepted) Google Scholar
  14. J. Farges et al., J. Chem. Phys. 84, 3491 (1986) CrossRefADSGoogle Scholar
  15. T. Hayakawa et al., J. Phys. Soc. Jpn 69, 2039 (2000) CrossRefGoogle Scholar
  16. e.g. W.A. Harrison, Electronic Structure and the Properties of Solids (San Francisco, Freeman, 1980), Chap. 12 Google Scholar
  17. R. Dörner et al., Phys. Rep. 330, 95 (2000) CrossRefGoogle Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • H. Murakami
    • 1
    Email author
  • H. Iwayama
    • 1
  • K. Nagaya
    • 1
  • Y. Ohmasa
    • 1
  • M. Yao
    • 1
  1. 1.Department of PhysicsKyoto UniversityKyotoJapan

Personalised recommendations