Neutron Cross Sections Measurements for Light Elements at ORELA and their Application in Nuclear Criticality

Conference · Sun Oct 07 04:00:00 EDT 2001 · Journal of Nuclear Science and Technology (Tokyo)

DOI:https://doi.org/10.1080/00223131.2002.10875111· OSTI ID:788533

Guber, Klaus H. ^[1]; Leal, Luiz C. ^[2]; Sayer, Royce O. ^[2]; Spencer, Robert R. ^[2]; Koehler, Paul E. ^[2]; Valentine, Timothy E. ^[2]; Derrien, Herve ^[2]; Harvey, John A. ^[2]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); ORNL
2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

The Oak Ridge Electron Linear Accelerator (ORELA) was used to measure neutron total and capture cross sections of aluminium, natural chlorine and silicon in the energy range from 100 eV to ~600 keV. ORELA is the only high power white neutron source with excellent time resolution and ideally suited for these experiments still operating in the USA. These measurements were carried out to support the Nuclear Criticality Predictability Program. Concerns about the use of existing cross section data in the nuclear criticality calculations using Monte Carlo codes and benchmarks have been a prime motivator for the new cross section measurements. More accurate nuclear data are not only needed for these calculations but also serve as input parameters for s-process stellar models.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 788533
• Report Number(s): P01--111583
• Conference Information: Journal Name: Journal of Nuclear Science and Technology (Tokyo) Journal Issue: 2 Journal Volume: 39
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
97 MATHEMATICS AND COMPUTING
ALUMINIUM
Aluminium
CHLORINE
CRITICALITY
CROSS SECTIONS
Chlorine
ENERGY RANGE
NEUTRON SOURCES
NEUTRONS
Neutron Cross Section
Nuclear Criticality Safety Program (NCSP)
ORELA
S PROCESS
SILICON
Silicon
TIME RESOLUTION