MONTE CARLO ANALYSIS OF FAST-NEUTRON SPECTRA IN AN INFINITE MEDIUM OF PARAFFIN WAX.
Abstract
A Monte Carlo study has been made to investigate the fast-neutron spectrum and angular distribution in a large assembly of paraffin wax. The shield configuration and detector locations were chosen so that techniques currently used in calculations and experiments of neutron deep penetration could be evaluated. A modified version of the Flexible Monte Carlo (FMC) procedure, along with several data-preparation and analysis routines, was developed and used to analyze the results. Calculations were performed to determine the angular-flux values at penetration thicknesses ranging from 5 cm to 60 cm. A comparison of the calculated and measured angular flux data was made for several penetration thicknesses and angles of incidence for which experimental data were taken. A divergence in spectral shapes at 0 degree is attributed to a streaming effect in the experimental data for direct-beam flux. Except for this difference, the Monte Carlo results are in good agreement with a large range of comparable experimental results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0482273
Entities
People
- F. O. Leopard
Organizations
- General Dynamics