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. [10 to 14 MeV]

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Nucl. Sci. Eng.; (United States)

OSTI ID:6248054

Auchampaugh, G F; 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 were measured from 1.0 to 14 MeV. The Los Alamos Scientific Laboratory 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) achieved in kiloelectron volts is given by 1.4E(MeV)/sup 3/2/, and the accuracy of the neutron energy scale in kiloelectron volts is given by +- E(MeV)(0.00744E(MeV) + 0.01592)/sup 1/2/. The statistical uncertainties in the transmission vary from 0.5 to 2%, and the systematic error in the transmission is estimated to +- 1.7%. The cross sections are compared with those in the ENDF/B-IV library where appropriate. The high statistical accuracy of the /sup 11/B data, for example, has revealed fine structure at high excitation energy (around 9 MeV), which correlates with the structure observed in charged prticle 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.

• Research Organization: Los Alamos Scientific Lab., NM
• OSTI ID: 6248054
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 69:1; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

651325* -- Nuclear Properties & Reactions
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654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BERYLLIUM 9 TARGET
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORON 10 TARGET
BORON 11
BORON 11 TARGET
BORON 12
BORON ISOTOPES
CARBON 12 TARGET
CARBON 13 TARGET
CHARGED-PARTICLE REACTIONS
COMPOUND NUCLEI
CROSS SECTIONS
DATA
DATA FORMS
DEUTERON REACTIONS
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
FINE STRUCTURE
GRAPHS
HADRON REACTIONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
NEUTRON SOURCES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARTICLE SOURCES
PERFORMANCE
RADIATION SOURCES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
TARGETS
TOTAL CROSS SECTIONS