Approximate method for fast neutron transport streaming within duct geometries

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6918303

Kim, J K

An approximate method, employing albedo principles, for the calculation of fast neutron streaming through two-legged rectangular ducts constructed on concrete walls is presented. A scattering model called the method of successive scattering is introduced to develop a new semi-empirical formula that yields values for the differential albedo. An albedo-transport equation is employed to analyze the attenuation of fast neutrons within duct geometries. Two different sizes of concrete ducts are analyzed numerically. The results, in terms of dose attenuation factor, are compared to experimental data. Overall agreement is very good. It seems to be confirmed that the differential albedo function containing more detailed treatment of higher-order scattering components will lead to decreasing the discrepancies between theoretical and experimental results. The use of the Albedo-Analytical Model method, which represents a simplified application of the albedo concept, can be a powerful technique for saving computer time and is suitable for a quick estimation of shielding problems.

• Research Organization: Michigan Univ., Ann Arbor (USA)
• OSTI ID: 6918303
• Country of Publication: United States
• Language: English

Related Subjects

654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALBEDO
BARYONS
BUILDING MATERIALS
CONCRETES
DUCTS
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
HADRONS
MATERIALS
MATHEMATICS
NEUTRON TRANSPORT THEORY
NEUTRONS
NUCLEONS
NUMERICAL ANALYSIS
SHIELDING
TRANSPORT THEORY