Heavy-Ion and Laser-Pulse Induced Ejection of Large Organic Molecules

  • R. E. Johnson
  • S. Banerjee
  • A. Hedin
  • D. Fenyö
  • B. U. R. Sundqvist
Part of the NATO ASI Series book series (NSSB, volume 269)


Ejection from the solid state of large, thermally-labile organic molecules occurs due to the energy deposited by fast heavy ions or by laser-pulse excitation of a matrix material. Laser-pulse-induced ejection is described using the ‘pressure pulse’ model developed for heavy-ion-induced ejection and its relationship to sublimation is considered. Since the rate of energy deposition for ‘nano-second lasers’ is slow compared to that for heavy-ion-induced ejection, processes that affect the ability to form a pressure pulse prior to significant energy dissipation and dispersion are considered. An expression for analyzing yield data is given in which ion yields depend on ion formation/destruction via the local energy density and the total yield depends on the ejection mechanism.


Momentum Density Picosecond Laser Kinetic Energy Density Excitation Density Threshold Fluence 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    B.U.R. Sundqvist, Nucl. Inst. and Meth. B48 (1990) 517.ADSGoogle Scholar
  2. 2.
    M. Karas and F. Hillenkamp, Anal Chem. 60 (1988) 2299.CrossRefGoogle Scholar
  3. 3.
    R.E. Johnson, B.U.R. Sundqvist, A. Hedin, and D. Feynö, Phys. Rev. B40 (1989) 49.ADSGoogle Scholar
  4. 4.
    D. Feynö, B.U.R. Sundqvist, B.R. Karlsson, and R.E. Johnson, Phys. Rev. B. (1990) 49.Google Scholar
  5. 5.
    S.T. Cui and R.E. Johnson, Int. J. of Quant. Chem. Symp. 23 (1989) 575. S. Banerjee, S.T. Cui and R.E. Johnson, Phys. Rev., submitted (1990).Google Scholar
  6. 6.
    R.E. Johnson, “Ion Formation from Organic Solids” (IVFOS), ed. A. Hedin et al. (1990) 189.Google Scholar
  7. 7.
    W.L. Brown and R.E. Johnson, Nucl. Inst. Meth. B13 (1986) 295.ADSGoogle Scholar
  8. 8.
    R.E. Johnson, Int. J. Mass Spec. 78 (1987) 357.CrossRefGoogle Scholar
  9. 9.
    R.E. Johnson, M. Pospieszalska, and W.L. Brown, Phys. Rev. in press (1991).Google Scholar
  10. 10.
    R.E. Johnson, J. de Physique C2 (1989) 251Google Scholar
  11. 10a.
    K. Gibbs, W.L. Brown and R.E. Johnson, Phys. Rev. B38 (1988) 11001.ADSGoogle Scholar
  12. 11.
    Y. Yamamura, Nucl. Inst. Meth. 194 (1982) 515ADSCrossRefGoogle Scholar
  13. 11a.
    G. Carter, Nucl. Inst. Meth. 209/210 (1983) 1.CrossRefGoogle Scholar
  14. 12.
    I.S. Bitensky, A.H. Goldenberg, and E. Parilis, “Ion Formation from Organic Solids” (IFOSV), ed. A. Hedin et al. p.205 (1990), J. de Physique C2 (1989) 213.Google Scholar
  15. 13.
    H. Urbassek and J. Michl, Nucl. Inst. Meth. B22 (1987) 480.ADSGoogle Scholar
  16. 14.
    R. Srinivasan and B. Braren, Chem. Rev. 89 (1989) 1303.CrossRefGoogle Scholar
  17. 15.
    R.C. Beavis and B.T. Chait (this proceedings.)Google Scholar
  18. 16.
    C.T. Reimann, W.L. Brown, and R.E. Johnson, Phys. Rev. B37 (1988) 1455.ADSGoogle Scholar
  19. 17.
    J.W. Boring, R.E. Johnson, and D.J. O’Shaughnessy, Phys. Rev. B39 (1989) 2689.ADSGoogle Scholar
  20. 18.
    E. Hilf (this proceeding). E.R. Hilf, H.F. Krammer, and B. Nitzschmann in “Ion Formation from Organic Solids” (IFOSIV), ed. A. Benninghoven (Wiley, Chichuster, 1989) p.97.Google Scholar
  21. 19.
    A. Vertes, R. Gijbels, R.D. Levine, Rapid Comm. In Mass Spec. 4 (1990) 228. A. Vertes (this proceeding).CrossRefGoogle Scholar
  22. 20.
    P. Williams and B.U.R. Sundqvist, Phys. Rev. Lett 58 (1987) 1031.ADSCrossRefGoogle Scholar
  23. 21.
    S.L. Lee and R.R. Lucchese, J. de Physique C2 (1989) 231.Google Scholar
  24. 22.
    B. Fain and S.H. Lin, J. Chem. Phys. 91 (1989) 2726.ADSCrossRefGoogle Scholar
  25. 23.
    W. Ens et al. (this proceeding).Google Scholar
  26. 24.
    A. Hedin et al. (this proceeding).Google Scholar
  27. 25.
    M. Karas, U. Bahr, and F. Hillenkamp, Int. J. Mass Spectrum Ion Phys. 92 (1989) 231.CrossRefGoogle Scholar
  28. 26.
    W. Ens, Y. Mao, F. Mayer, and K.G. Standing, Rapid Comm. in Mass Spec. in press (1991).Google Scholar

Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • R. E. Johnson
    • 1
  • S. Banerjee
    • 1
  • A. Hedin
    • 2
  • D. Fenyö
    • 2
  • B. U. R. Sundqvist
    • 2
  1. 1.University of VirginiaCharlottesvilleUSA
  2. 2.University of UppsalaUppsalaSweden

Personalised recommendations