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NUCFRG2: a semiempirical nuclear fragmentation model.

J W Wilson1, J L Shinn, L W Townsend

  • 1NASA Langley Research Center, Hampton, VA 23681-0001, USA.

Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
|January 1, 1994
PubMed
Summary

The semiempirical abrasion/ablation model accurately predicts high charge and energy (HZE) ion beam fragmentation. Improvements enhance its reliability for radiation physics and cosmic ray shielding applications.

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Area of Science:

  • Nuclear Physics
  • Astrophysics
  • Radiation Science

Background:

  • The semiempirical abrasion/ablation model is crucial for nuclear data generation.
  • Applications include high charge and energy (HZE) ion beams, radiation physics, and galactic cosmic ray shielding.

Purpose of the Study:

  • To present an enhanced semiempirical abrasion/ablation model.
  • To improve the accuracy of nuclear cross-section predictions for HZE ion interactions.

Main Methods:

  • Incorporated Coulomb trajectory corrections.
  • Improved nuclear attenuation factor treatment.
  • Enhanced second-order correction for spectator fragment excitation spectrum.
  • Included pre-equilibrium and competitive equilibrium emission processes for hydrogen and helium isotopes.
Keywords:
NASA Discipline Radiation Health

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Main Results:

  • Generated a comprehensive nuclear data base for HZE ion beams.
  • Model-generated cross sections show strong agreement with experimental HZE fragmentation data.
  • Achieved agreement levels comparable to inter-experimental group consistency.

Conclusions:

  • The improved model provides reliable nuclear data for HZE ion studies.
  • Enhancements increase the model's applicability in radiation physics and cosmic ray shielding.
  • The model's accuracy is validated by its concordance with experimental findings.