Measurement of {sup 7}Li({ital n},{gamma}{sub 0}){sup 8}Li cross sections at {ital E}{sub {ital n}}=1.5{endash}1340 eV

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.383· OSTI ID:286211

Blackmon, J C; Champagne, A E; Dickens, J K; Harvey, J A; Hofstee, M A; Kopecky, S; Larson, D C; Powell, D C; Raman, S; Smith, M S ^[1]

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1. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 (United States)

The {sup 7}Li({ital n},{gamma}){sup 8}Li cross section is important in inhomogeneous big bang models, and as a constraint on model parameters used to determine the solar {sup 7}Be({ital p},{gamma}){sup 8}B reaction rate. Values of the {sup 7}Li({ital n},{gamma}{sub 0}){sup 8}Li reaction cross section were measured for neutron energies between 1.5 and 1340 eV at the Oak Ridge Electron Linear Accelerator. The normalization of the cross section was determined by measuring the gamma-ray yield from the {sup 7}Li({ital n},{gamma}{sub 0}){sup 8}Li reaction relative to that from the {sup 10}B({ital n},{alpha}{gamma}){sup 7}Li reaction. The cross section was found to have the inverse neutron-velocity relationship (1/{ital v}) indicative of {ital s}-wave capture. These results help resolve ambiguities in previous measurements. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464; FG05-88ER40442
• OSTI ID: 286211
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 54; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BERYLLIUM 7 TARGET
BIG BANG
BORON 8
CAPTURE
CROSS SECTIONS
EV RANGE
GAMMA RADIATION
KEV RANGE 01-10
LINEAR ACCELERATORS
LITHIUM 7 TARGET
LITHIUM 8
NEUTRON REACTIONS
OAK RIDGE
PHOTONS
PROTON REACTIONS
S WAVES