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Numerical simulations of the projectile ion charge difference in solid and gaseous stopping matter

  • GSI Helmholtz Centre for Heavy Ion Research
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • Technische Universität Darmstadt

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The dependence of calcium ion subshell populations on the target density during the ion stopping process was analyzed using a five charge-state collisional-radiative model. The model, which consists of the ground and three excited states for every ion charge, was successfully compared with the experiment. The gas-solid difference of calcium ion charge state distribution has been numerically demonstrated. For Ca projectiles with energies of 411 MeV/u, the increase of the mean ion charge in solid target is explained by the increase of the total ionization rate and by suppression of the bound electron capture process at high densities of the stopping medium.

Original languageEnglish
Pages (from-to)601-611
Number of pages11
JournalLaser and Particle Beams
Volume25
Issue number4
DOIs
StatePublished - Dec 2007
Externally publishedYes

Keywords

  • Collisional-radiative model
  • Gas-solid difference
  • Heavy ion stopping process
  • Ion charge state distribution
  • Ion subshells population kinetics
  • Projectile K-shell radiation

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