### Abstract

This report describes the development of an interaction data base and a numerical solution to the transport of baryons through an arbitrary shield material based on a straight ahead approximation of the Boltzmann equation. The code is most accurate for continuous-energy boundary values but gives reasonable results for discrete spectra at the boundary using even a relatively coarse energy grid (30 points) and large spatial increments (1 cm in H_{2}O). The resulting computer code is self-contained, efficient, and easy to use. The code requires only a very small fraction of the computer resources required for Monte Carlo codes.

Original language | English (US) |
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Title of host publication | NASA Technical Paper |

Edition | 2887 |

State | Published - Mar 1 1989 |

Externally published | Yes |

### ASJC Scopus subject areas

- Aerospace Engineering

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## Cite this

*NASA Technical Paper*(2887 ed.)