Neutron total cross-section measurements of /sup 9/Be, /sup 10/ /sup 11/B, and /sup 12/ /sup 13/C from 1. 0 to 14 MeV using the /sup 9/Be(d,n)/sup 10/B reaction as a ''white'' neutron source

Technical Report · Wed Jun 01 00:00:00 EDT 1977

DOI:https://doi.org/10.2172/7103368· OSTI ID:7103368

Auchampaugh, G F; Ragan, III, C E; Plattard, S; Hill, N W

High-resolution and high-accuracy total cross sections of /sup 9/Be, /sup 10/ /sup 11/B, and /sup 12/ /sup 13/C have been measured from 1.0 to 14 MeV. The Los Alamos Scientific Laboratory (LASL) tandem accelerator was used to produce a ''white'' source of neutrons by stopping a pulsed beam of 15-MeV deuterons in a thick beryllium target. The neutron energy resolution (full width at half maximum (FWHM)) achieved in kiloelectron volts is given by 1.4 E (MeV)/sup /sup 3///sub 2//, and the accuracy of the neutron energy scale in kiloelectron volts is given by +- 0.060 E (MeV) root (1.79 E (MeV) + 0.75). The statistical uncertainties in the transmission vary from 0.5 percent to 2 percent, and the systematic error in the transmission is estimated to +-1.7 percent. The high statistical accuracy of the /sup 11/B data, for example, revealed fine structure at high excitation energy (around 9 MeV) which correlates with the structure observed in charged-particle measurements on the same compound nucleus. There are also indications of additional structures that have not been seen previously in the /sup 12/B compound nucleus at this excitation energy. 17 figures, 2 tables

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7103368
• Report Number(s): LA-6761; TRN: 77-014151
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 9 TARGET
NEUTRON REACTIONS
BORON 10 TARGET
BORON 11 TARGET
CARBON 12 TARGET
CARBON 13 TARGET
TOTAL CROSS SECTIONS
EXCITATION FUNCTIONS
FAST NEUTRONS
MEV RANGE 01-10
MEV RANGE 10-100
BARYON REACTIONS
BARYONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON REACTIONS
HADRONS
MEV RANGE
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
TARGETS
651325* - Nuclear Properties & Reactions
A=6-19
Experimental- Nuclear Reactions & Scattering- (-1987)