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Study of the higher excitation states of /sup 12/B via the /sup 11/B(n,n)/sup 11/B reaction. [Differential and total cross sections, 4. 0 to 8. 0 MeV, Monte Carlo method, R matrix, coupling, J, pi] [electronic resource].

Published
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1977.
Physical Description
Pages: 197 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Differential cross sections for neutrons elastically scattered from an isotopically enriched sample of /sup 11/B were measured for nine laboratory angles from 20 to 160/sup 0/ at 17.5/sup 0/ increments for sixty incident neutron energies from 4.0 to 8.0 MeV. The data were corrected for incident neutron beam attenuation in the sample, air scattering of neutrons, and finite geometry and multiple scattering effects using a Monte Carlo code which included the energy-dependence of differential cross sections of multiple events necessary for light nuclei. Comparison of the present data is made with data previously measured in this energy region and all known differential neutron data on /sup 11/B were integrated and compared with recent high resolution total cross section measurements to gain information on the neutron inelastic scattering cross section. All the neutron elastic differential cross section measurements on /sup 11/B have been analyzed with a new R-matrix analysis program utilizing j-j coupling with most previous assignments of J/sup ..pi../ in the compound nucleus /sup 12/B confirmed, and new J/sup ..pi../ assignments made in the region of the present measurements. Finally, based on the results of the present measurements and analysis, recommendations for further neutron cross section measurements on /sup 11/B are made.
Report Numbers
E 1.99:coo-2490-6
coo-2490-6
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Note
Published through SciTech Connect.
06/01/1977.
"coo-2490-6"
White, R.M.
Ohio Univ., Athens (USA)
Funding Information
EY-76-S-02-2490
View MARC record | catkey: 14667064