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Double-differential heavy-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
Summary

This study introduces a novel model for calculating heavy-ion production cross sections, improving accuracy in space and accelerator shielding simulations. The new method enhances the transport of energetic heavy ions for better radiation safety assessments.

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Area of Science:

  • Nuclear Physics
  • Computational Physics
  • Radiation Shielding

Background:

  • Current shielding models for energetic heavy ions use approximations or simplified nuclear dissociation.
  • Accurate simulation of light ion production requires double-differential cross sections, which are not readily available from existing nuclear models.

Purpose of the Study:

  • To develop a new computational model for generating double-differential heavy-ion production cross sections.
  • To improve the accuracy of space and accelerator shielding studies by addressing limitations in current heavy-ion transport methods.

Main Methods:

  • Coupling the NUCFRG2 code for heavy-ion fragmentation yields with an energy degradation model for nucleus-nucleus collisions.
  • Utilizing systematics of momentum distributions to determine energy and angular dependencies of heavy-ion production.
Keywords:
NASA Discipline Radiation HealthNon-NASA Center

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Main Results:

  • The presented model provides double-differential heavy-ion production cross sections.
  • This approach accounts for energy degradation and momentum distributions, offering a more comprehensive description of heavy-ion production.

Conclusions:

  • The developed model offers a viable solution for generating necessary cross sections where fundamental nuclear models are lacking.
  • This advancement is expected to enhance the precision of computational tools used in space and accelerator shielding applications.