Energy-loss straggling of 2–10 MeV/u Kr ions in gases

  • Christof Vockenhuber
  • Jens Jensen
  • Jaakko Julin
  • Heikki Kettunen
  • Mikko Laitinen
  • Mikko Rossi
  • Timo Sajavaara
  • Orkhan Osmani
  • Andreas Schinner
  • Peter Sigmund
  • Harry J. Whitlow
Regular Article

Abstract

Measurements have been performed on a time-of-flight setup at the Jyväskylä K130 cyclotron, aiming at energy-loss straggling of heavy ions in gases. Theoretical predictions based on recently developed theory as well as an empirical interpolation formula predict that straggling can be more than ten times higher than Bohr straggling in the MeV/u regime. Our measurements with up to 9.3 MeV/u Kr ions on He, N2, Ne and Kr targets confirm this feature. Our calculations show the relative contributions of linear straggling, bunching including packing, and charge exchange. Our results for stopping cross sections are compatible with values from the literature.

Keywords

Atomic and Molecular Collisions 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Christof Vockenhuber
    • 1
  • Jens Jensen
    • 2
  • Jaakko Julin
    • 3
  • Heikki Kettunen
    • 3
  • Mikko Laitinen
    • 3
  • Mikko Rossi
    • 3
  • Timo Sajavaara
    • 3
  • Orkhan Osmani
    • 4
  • Andreas Schinner
    • 5
  • Peter Sigmund
    • 6
  • Harry J. Whitlow
    • 3
  1. 1.Laboratory for Ion Beam PhysicsETH ZurichZurichSwitzerland
  2. 2.Department of Physics, Chemistry and BiologyLinköping UniversityLinköpingSweden
  3. 3.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  4. 4.Donostia International Physics CenterSan SebastianSpain
  5. 5.Department of Experimental PhysicsJohannes Kepler UniversityLinz-AuhofAustria
  6. 6.Department of Physics, Chemistry and PharmacyUniversity of Southern DenmarkOdenseDenmark

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