A contribution Monte Carlo method

Journal Article · Tue Nov 01 04:00:00 EST 1994 · Nuclear Science and Engineering; (United States)

OSTI ID:7022944

Aboughantous, C H ^[1]

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1. Louisiana State Univ., Baton Rouge, LA (United States). Nuclear Science Center

A Contribution Monte Carlo method is developed and successfully applied to a sample deep-penetration shielding problem. The random walk is simulated in most of its parts as in conventional Monte Carlo methods. The probability density functions (pdf's) are expressed in terms of spherical harmonics and are continuous functions in direction cosine and azimuthal angle variables as well as in position coordinates; the energy is discretized in the multigroup approximation. The transport pdf is an unusual exponential kernel strongly dependent on the incident and emergent directions and energies and on the position of the collision site. The method produces the same results obtained with the deterministic method with a very small standard deviation, with as little as 1,000 Contribution particles in both analog and nonabsorption biasing modes and with only a few minutes CPU time.

• DOE Contract Number: FG02-89ER12899
• OSTI ID: 7022944
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 118:3; ISSN NSENAO; ISSN 0029-5639
• Country of Publication: United States
• Language: English

Related Subjects

663600* -- Radiation Physics-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCULATION METHODS
COMPARATIVE EVALUATIONS
EVALUATION
MATHEMATICAL MODELS
MONTE CARLO METHOD
PERFORMANCE
TRANSPORT THEORY