Discrete angle biasing in Monte Carlo radiation transport
An angular biasing procedure is presented for use in Monte Carlo radiation transport with discretized scattering angle data. As in more general studies, the method is shown to reduce statistical weight fluctuations when it is combined with the exponential transformation. This discrete data application has a simple analytic form which is problem independent. The results from a sample problem illustrate the variance reduction and efficiency characteristics of the combined biasing procedures, and a large neutron and gamma ray integral experiment is also calculated. A proposal is given for the possible code generation of the biasing parameter p and the preferential direction /ovr/Omega///sub 0/ used in the combined biasing schemes.
- Research Organization:
- Oak Ridge National Lab., TN (USA). Radiation Shielding Information Center
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5049833
- Report Number(s):
- ORNL/RSIC-50; ON: DE88010736
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOLTZMANN EQUATION
DIFFERENTIAL EQUATIONS
DISTRIBUTION
ENERGY SPECTRA
EQUATIONS
MONTE CARLO METHOD
PARTIAL DIFFERENTIAL EQUATIONS
RADIATION TRANSPORT
SPECTRA
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOLTZMANN EQUATION
DIFFERENTIAL EQUATIONS
DISTRIBUTION
ENERGY SPECTRA
EQUATIONS
MONTE CARLO METHOD
PARTIAL DIFFERENTIAL EQUATIONS
RADIATION TRANSPORT
SPECTRA