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]
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.
- Research Organization:
- Ohio Univ., Athens (USA)
- DOE Contract Number:
- EY-76-S-02-2490
- OSTI ID:
- 7221471
- Report Number(s):
- COO-2490-6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Higher excitation levels of sup 11 B via the sup 10 B( n , n ) sup 10 B and sup 10 B( n , n sup prime ) sup 10 B sup * (0. 72, 1. 74, 2. 15, 3. 59, 4. 77 MeV) reactions
A study of the higher excitation levels of /sup 11/B via the /sup 10/B(n,n)/sup 10/B and /sup 10/B(n,n')/sup 10/B*(0. 72, 1. 74, 2. 15, 3. 59, 4. 77 MeV) reactions
A study of the higher excitation levels of sup 11 B via the sup 10 B(n,n) sup 10 B and sup 10 B(n,n) prime sup 10 B sup * (0. 72, 1. 74, 2. 15, 3. 59, 4. 77 MeV) reactions
Journal Article
·
Sun Jul 01 00:00:00 EDT 1990
· Physical Review, C (Nuclear Physics); (USA)
·
OSTI ID:6505460
A study of the higher excitation levels of /sup 11/B via the /sup 10/B(n,n)/sup 10/B and /sup 10/B(n,n')/sup 10/B*(0. 72, 1. 74, 2. 15, 3. 59, 4. 77 MeV) reactions
Technical Report
·
Mon Oct 31 23:00:00 EST 1988
·
OSTI ID:6645320
A study of the higher excitation levels of sup 11 B via the sup 10 B(n,n) sup 10 B and sup 10 B(n,n) prime sup 10 B sup * (0. 72, 1. 74, 2. 15, 3. 59, 4. 77 MeV) reactions
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1987
·
OSTI ID:5833441
Related Subjects
651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYON REACTIONS
BORON 11 TARGET
COUPLING
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ENERGY DEPENDENCE
GEOMETRY
HADRON REACTIONS
MATHEMATICS
MATRICES
MONTE CARLO METHOD
MULTIPLE SCATTERING
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
R MATRIX
SCATTERING
SPIN
TARGETS
TOTAL CROSS SECTIONS
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYON REACTIONS
BORON 11 TARGET
COUPLING
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ENERGY DEPENDENCE
GEOMETRY
HADRON REACTIONS
MATHEMATICS
MATRICES
MONTE CARLO METHOD
MULTIPLE SCATTERING
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
R MATRIX
SCATTERING
SPIN
TARGETS
TOTAL CROSS SECTIONS