Impacts of processing decisions on TNSL cross sections and their applications

Conference · Fri Jul 01 04:00:00 EDT 2022

OSTI ID:23178679

Dreyfuss, Ali; Beck, Bret; Mattoon, Caleb; Brown, Peter; McKinley, Scott; Descalle, Marie-Anne ^[1]

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1. Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA 94550 (United States)

Thermal neutron scattering law (TNSL) data describe low-energy neutrons scattering off of bound materials, and can have a significant impact on modeling any system with slow neutrons, including nuclear reactors. Previous work to introduce TNSL data to neutron transport codes at LLNL focused on COG and TART, with the limitation that these codes require highly specialized data processing and formatting. We have recently increased efforts to process TNSL data with the LLNL nuclear data processing code FUDGE. FUDGE reads and writes the evaluated and processed files using the generalized nuclear database structure (GNDS). This process uncovered some significant difficulties in processing TNSL data, and unearthed assumptions made in current TNSL data processing that we have found inadequate. (authors)

• Research Organization: American Nuclear Society - ANS, La Grange Park, IL 60526 (United States)
• OSTI ID: 23178679
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BENCHMARKS
DATA PROCESSING
DIFFERENTIAL CROSS SECTIONS
INCOHERENT SCATTERING
INELASTIC SCATTERING
NUCLEAR DATA COLLECTIONS
THERMAL NEUTRONS
VALIDATION