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Simulations of the fission-product stopping efficiency in IGISOL

  • A. Al-AdiliEmail author
  • K. Jansson
  • M. Lantz
  • A. Solders
  • D. Gorelov
  • C. Gustavsson
  • A. Mattera
  • I. Moore
  • A. V. Prokofiev
  • V. Rakopoulos
  • H. Penttilä
  • D. Tarrío
  • S. Wiberg
  • M. Österlund
  • S. Pomp
Special Article - Tools for Experiment and Theory

Abstract

At the Jyväskylä Ion Guide Isotope Separator On-Line (IGISOL) facility, independent fission yields are measured employing the Penning-trap technique. Fission products are produced, e.g. by impinging protons on a uranium target, and are stopped in a gas-filled chamber. The products are collected by a flow of He gas and guided through a mass separator to a Penning trap, where their masses are identified. This work investigates how fission-product properties, such as mass and energy, affect the ion stopping efficiency in the gas cell. The study was performed using the Geant4 toolkit and the SRIM code. The main results show a nearly mass-independent ion stopping with regard to the wide spread of ion masses and energies, with a proper choice of uranium target thickness. Although small variations were observed, in the order of 5%, the results are within the systematic uncertainties of the simulations. To optimize the stopping efficiency while reducing the systematic errors, different experimental parameters were varied; for instance material thicknesses and He gas pressure. Different parameters influence the mass dependence and could alter the mass dependencies in the ion stopping efficiency.

Keywords

Systematic Uncertainty Mass Dependence Target Thickness Geant4 Simulation Uranium Target 
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

© SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • A. Al-Adili
    • 1
    Email author
  • K. Jansson
    • 1
  • M. Lantz
    • 1
  • A. Solders
    • 1
  • D. Gorelov
    • 2
  • C. Gustavsson
    • 1
  • A. Mattera
    • 1
  • I. Moore
    • 1
  • A. V. Prokofiev
    • 1
    • 3
  • V. Rakopoulos
    • 1
  • H. Penttilä
    • 2
  • D. Tarrío
    • 1
  • S. Wiberg
    • 1
  • M. Österlund
    • 1
  • S. Pomp
    • 1
  1. 1.Division of Applied Nuclear PhysicsUppsala UniversityUppsalaSweden
  2. 2.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  3. 3.The Svedberg LaboratoryUppsala UniversityUppsalaSweden

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