Energy dependence of neutron self-shielding factors in an isolated resonance

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Nuclear Science and Engineering; (USA)

OSTI ID:6655633

Lopes, M D.C.; Avila, J M ^[1]

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1. LNETI/ICEN/DEEN, Inst. of Nuclear Sciences and Engineering, 2685 Sacavem (PT)

The new approach for calculating neutron self-shielding factors taking into account isotropic multiple scattering, recently developed for the thermal region, is extended to epithermal resonance energies. The method is based on a collision function determined solely by the cross sections and the geometry of the probe submitted to the neutron field. The influence of the external field is separately included in the first collision probability distribution. Some advantages of the method with respect to the transport theory are discussed. Numerical results for the main epithermal resonances in cobalt and gold are presented, including the self-shielding factor as a function of the incident neutron energy.

• OSTI ID: 6655633
• Journal Information: Nuclear Science and Engineering; (USA), Journal Name: Nuclear Science and Engineering; (USA) Vol. 104:1; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CALCULATION METHODS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
FERMIONS
GEOMETRY
HADRONS
MATHEMATICS
MULTIPLE SCATTERING
NEUTRON TRANSPORT THEORY
NEUTRONS
NUCLEONS
NUMERICAL SOLUTION
SCATTERING
SELF-SHIELDING
SHIELDING
TRANSPORT THEORY