MCNP ENDF/B-VI iron benchmark calculations

Journal Article · Sat Dec 31 04:00:00 EST 1994 · Transactions of the American Nuclear Society

OSTI ID:89243

Court, J D; Hendricks, J S ^[1]

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1. Los Alamos National Lab., NM (United States)

Four iron shielding benchmarks have been calculated, we believe for the first time, with MCNP4A and its new ENDF/B-VI library. These calculations are part of the Hiroshima/Nagasaki dose re-evaluation for the National Academy of Sciences and the Defense Nuclear Agency. We believe these calculations are significant because they validate MCNP and the new ENDF/B-VI libraries. These calculations are compared with experimental results, as well as with calculations from other data sets, including ENDF/B-IV, ENDF/B-V, and the recommended MCNP data library (a T-2 evaluation). The first iron shielding benchmarks are the Livermore pulsed sphere experiments from the 1960s. These consist of a 14-MeV pulsed deuterium-tritium (D-T) neutron source in spheres of different materials and thicknesses and measured with time-of-flight detectors. The iron experiments were for iron spheres of 0.9 and 4.8 mean free paths (mfp). In addition to comparing the detailed energy spectrum from 2 to 16 MeV, the integrals of emerging neutrons are tabulated in two bins: 2 to 16 MeV and 12 to 16 MeV. These data are presented.

• OSTI ID: 89243
• Report Number(s): CONF-941102--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 71; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
99 GENERAL AND MISCELLANEOUS
BENCHMARKS
IRON
M CODES
NEUTRON SOURCES
NEUTRON TRANSPORT
NUCLEAR DATA COLLECTIONS
RADIATION DOSE DISTRIBUTIONS
SHIELDING MATERIALS