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Delayed ionisation of C70

  • B. Concina
  • S. Tomita
  • J. U. Andersen
  • P. Hvelplund
Thermodynamics and Phase Transitions

Abstract.

A delayed ionisation experiment has been carried out on laser excited C70 molecules. Ions and electrons are detected in coincidence to distinguish the ionisation of C70 from that of C68 molecules created by the dominant process, emission of C2. From the time dependence of the C70+ yield and the ratio to the C68+ yield, we can deduce both the dissociation energy, Ed = 9.7 ±0.3 eV, and the pre–exponential factor, Ad = 1.7 ×1020 s-1, in the Arrhenius decay law for C2 emission. The power of photon emission from neutral C70 is also determined.

Keywords

Spectroscopy Neural Network State Physics Complex System Time Dependence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. C. Lifshitz, Int. J. Mass Spectrom. 198, 1 (2000) Google Scholar
  2. S. Matt, O. Echt, P. Scheier, T.D. Märk, Chem. Phys. Lett. 348, 194 (2001) Google Scholar
  3. K. Hansen, O. Echt, Phys. Rev. Lett. 78, 2337 (1997) Google Scholar
  4. J. Laskin, B. Hadas, T.D. Märk, C. Lifshitz, Int. J. Mass Spectrom. 177, L9 (1998) Google Scholar
  5. P.E. Barran, S. Firth, A.J. Stace, H.W. Kroto, K. Hansen, E.E.B. Campbell, Int. J. Mass Spectrom. Ion Process 167/168, 127 (1997) Google Scholar
  6. S. Tomita, J.U. Andersen, C. Gottrup, P. Hvelplund, U.V. Pedersen, Phys. Rev. Lett. 87, 073401 (2001) Google Scholar
  7. S. Diáz–Tendero, M. Alcami, F. Martin, J. Chem. Phys. 119, 5545 (2003) Google Scholar
  8. K. Gluch, S. Matt–Leubner, O. Echt, B. Concina, P. Scheier, T.D. Märk, J. Chem. Phys. 121, 2137 (2004) Google Scholar
  9. J.U. Andersen, E. Bonderup, K. Hansen, J. Chem. Phys. 114, 6518 (2001) Google Scholar
  10. C.E. Klots, Z. Phys. D 20, 105 (1991) Google Scholar
  11. K. Hansen, Philos. Mag. B 79, 1413 (1999) Google Scholar
  12. S. Tomita, J.U. Andersen, K. Hansen, P. Hvelplund, Chem. Phys. Lett. 382, 120 (2003) Google Scholar
  13. J.U. Andersen, C. Gottrup, K. Hansen, P. Hvelplund, M.O. Larsson, Eur. Phys. J. D 17, 189 (2001) Google Scholar
  14. O.V. Boltalina, I.N. Ioffe, L.N. Sidorov, G. Seifert, K. Vietze, J. Am. Chem. Soc. 122, 9745 (2000) Google Scholar
  15. J.U. Andersen, E. Bonderup, Eur. Phys. J. D 11, 413 (2000) Google Scholar
  16. K. Mehlig, K. Hansen, M. Hedén, A. Lassesson, A.V. Bulgakov, E.E.B. Campbell, J. Chem. Phys. 120, 4281 (2004) Google Scholar
  17. J. de Vries, H. Steger, B. Kamke, C. Menzel, B. Weisser, W. Kamke, I.V. Hertel, Chem. Phys. Lett. 188, 159 (1992) Google Scholar
  18. J.U. Andersen, E. Bonderup, K. Hansen, J. Phys. B 35, R1 (2002) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Authors and Affiliations

  • B. Concina
    • 1
  • S. Tomita
    • 1
    • 2
  • J. U. Andersen
    • 1
  • P. Hvelplund
    • 1
  1. 1.Department of Physics and AstronomyUniversity of AarhusAarhus CDenmark
  2. 2.Present Address: Institute of Applied Physics, University of TsukubaIbarakiJapan

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