Benchmark solutions for the galactic ion transport equations: Energy and spatially dependent problems

Details Benchmark solutions for the galactic ion transport equations: Energy and spatially dependent problems Benchmark solutions for the galactic ion transport equations: Energy and spatially dependent problems

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989bsgi.book.....g&link_type=abstract

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Computer Science

Equations Of Motion, Galactic Radiation, Heavy Ions, Ion Beams, Ionic Mobility, Radiation Hazards, Transport Theory, Algorithms, Approximation, Atmospheric Radiation, Radiant Flux Density, Radiation Shielding, Radiation Sources, Upper Atmosphere

Scientific paper

Nontrivial benchmark solutions are developed for the galactic ion transport (GIT) equations in the straight-ahead approximation. These equations are used to predict potential radiation hazards in the upper atmosphere and in space. Two levels of difficulty are considered: (1) energy independent, and (2) spatially independent. The analysis emphasizes analytical methods never before applied to the GIT equations. Most of the representations derived have been numerically implemented and compared to more approximate calculations. Accurate ion fluxes are obtained (3 to 5 digits) for nontrivial sources. For monoenergetic beams, both accurate doses and fluxes are found. The benchmarks presented are useful in assessing the accuracy of transport algorithms designed to accommodate more complex radiation protection problems. In addition, these solutions can provide fast and accurate assessments of relatively simple shield configurations.

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