Measurement and resonance analysis of the /sup 232/Th total neutron cross section

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Nucl. Sci. Eng.; (United States)

OSTI ID:6076209

Olsen, D K; Ingle, R W; Portney, J L

Using the Oak Ridge Electron Linear Accelerator pulsed neutron source and a 1-mm-thick lithium glass detector, neutron transmission spectra through /sup 232/Th have been measured at 22- and 40-m flight paths. At 22 m, transmission spectra through samples of five thicknesses were measured from 7 mev to 15 ev. At 40 m, spectra through samples of eight thicknesses were measured from 15 ev to 4 kev. The resulting total cross section from 0.1 to 20.0 ev is smaller than that given by the ENDF/B-V evaluation. Least-squares shape analysis of the transmissions up to 2.0 kev gives larger neutron widths above 0.5 kev than those previously reported. An average radiation width of 25.2 mev is obtained for 19 low-energy s-wave resonances.

• Research Organization: Oak Ridge National Laboratory, P.O. Box X, Oak Ridge, Tennessee 37830
• OSTI ID: 6076209
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 82:3; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALKALI METALS
BARYON REACTIONS
CROSS SECTIONS
DIMENSIONS
ELEMENTS
HADRON REACTIONS
LEAST SQUARE FIT
LINEAR ACCELERATORS
LITHIUM
MAXIMUM-LIKELIHOOD FIT
MEASURING METHODS
METALS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON REACTIONS
NEUTRON SPECTRA
NEUTRON TRANSPORT
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL SOLUTION
ORELA
PULSED NEUTRON TECHNIQUES
RADIATION TRANSPORT
RESONANCE
SPECTRA
TARGETS
THICKNESS
THORIUM 232 TARGET
TOTAL CROSS SECTIONS