Resonance self-shielding corrections for detector foils in fast neutron spectra

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Nucl. Sci. Eng.; (United States)

OSTI ID:6228817

Mo, S C; Ott, K O

Activation measurements in fast neutron spectra, using detector foils in which the neutron mean-free-path in a resonance is small compared to the foil thickness, are revised by detailed space and energy self-shielding corrections. The experimental data are then comparable with the reaction rate density calculations. The self-shielding factors of individual Doppler-broadened resonances have been calculated with the integral transport theory. A multiple collision technique was required to treat resonance scattering inside the foil because of the small mean-free-path. The foil correction factor at each experimental position is obtained by combining the self-shielding factors of individual resonances with the calculated multigroup reaction rates at the foil locations.

• Research Organization: Argonne National Lab., Applied Physics Div., 9700 S. Cass Avenue, Argonne, IL 60439
• OSTI ID: 6228817
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 95:3; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTIVATION ANALYSIS
BARYON REACTIONS
BARYONS
CHEMICAL ANALYSIS
COLLISIONS
CORRECTIONS
DATA ANALYSIS
DENSITY
DIMENSIONS
DOPPLER BROADENING
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
FOILS
HADRON REACTIONS
HADRONS
LINE BROADENING
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NEUTRON REACTIONS
NEUTRON SPECTRA
NEUTRON TRANSPORT THEORY
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PHYSICAL PROPERTIES
RADIATION DETECTORS
RESONANCE
SELF-SHIELDING
SHIELDING
SPACE DEPENDENCE
SPECTRA
THICKNESS
TRANSPORT THEORY