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Non-equilibrium convoy electron production in coincidence with outgoing projectile charge states

  • J. Kemmler
  • O. Heil
  • C. Biedermann
  • P. Koschar
  • H. Rothard
  • K. Kroneberger
  • K. O. Groeneveld
  • A. Kövér
  • G. Szabò
  • L. Gulyàs
  • D. Berényi
  • P. Focke
  • W. Meckbach
Ion-Solid and Ion-Molecule Collisions
Part of the Lecture Notes in Physics book series (LNP, volume 294)

Abstract

The target thickness dependence of the convoy electron yield in carbon foils (3.1 < ϱx < 22 μg/cm2) from incident projectiles Cqi qi=2, 4, 6 at 1 MeV/u has been measured in coincidence with the outgoing projectile charge states qf. The observed charge state distributions of the carbon ions are in non-equilibrium for the thinnest targets. We find that the coincident convoy electron yield Ye(qf) in the non-equilbrium regime is dependent on ϱx, qi and qf. In contradiction to earlier findings, these results cannot be explained only by assuming electron loss to continuum processes (ELC). For the first time, the cusp-electron yield in the single collision system 3He+(0.2 < Ep/m < 0.33 MeV/u) on a He gas target in coincidence with the emergent projectiles 3He+ and 3He++ has been measured. Surprisingly, a significant contribution of cusp electrons in coincidence with He+ has been found which is attributed to electron capture to continuum (ECC).

Keywords

Charge State Target Thickness Charge State Distribution Electron Yield Projectile Energy 
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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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • J. Kemmler
    • 1
  • O. Heil
    • 1
  • C. Biedermann
    • 1
  • P. Koschar
    • 1
  • H. Rothard
    • 1
  • K. Kroneberger
    • 1
  • K. O. Groeneveld
    • 1
  • A. Kövér
    • 2
  • G. Szabò
    • 2
  • L. Gulyàs
    • 2
  • D. Berényi
    • 2
  • P. Focke
    • 3
  • W. Meckbach
    • 3
  1. 1.Institut für KernphysikJ.W.Goethe Universität Frankfurt/MainFrankfurt/MainGermany
  2. 2.Institute of Nuclear Research of the Hung. Acad. Sci.ATOMKIDebrecen, Pf. 51.Hungary
  3. 3.Centro AtòmicoBarilocheArgentina

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