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Double-differential light-ion production cross sections.

T M Miller1, L W Townsend

  • 1Department of Nuclear Engineering, University of Tennessee, Knoxville, TN 37996-2300, USA. tmiller7@utk.edu

Radiation Protection Dosimetry
|September 9, 2004
PubMed
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This study introduces new models to predict light-ion production cross sections, crucial for space radiation shielding. These models improve accuracy by accounting for particle breakup, enhancing safety for space missions.

Area of Science:

  • Nuclear Physics
  • Space Radiation Physics

Background:

  • Current space radiation shielding codes often neglect light-ion breakup.
  • Light-ions are produced from cosmic rays and heavy-ion interactions.

Purpose of the Study:

  • Develop accurate cross section models for double-differential light-ion production.
  • Enhance space radiation shielding simulations by including particle breakup effects.

Main Methods:

  • Parameterization of total reaction cross sections for deuteron breakup.
  • Abrasion-ablation model augmented with experimental data for alpha fragmentation.
  • Quantum mechanical abrasion-ablation-coalescence model for neutron, proton, triton, and 3He production.

Main Results:

  • Models predict double-differential light-ion production cross sections.

Related Experiment Videos

  • Accurate predictions for deuteron, alpha, neutron, proton, triton, and 3He production.
  • Incorporation of energy degradation and momentum distribution systematics.

    • Conclusions:

    • The presented models offer improved predictions for light-ion production cross sections.
    • These models are vital for more accurate space radiation shielding calculations.
    • Enhanced accuracy aids in better design of radiation protection for astronauts and equipment.