SYMPOSIA PAPER Published: 14 December 2018
STP160820170069

Results of a New Evaluation of the Neutron Standards

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An international effort has produced evaluations of the neutron data standards. Evaluations were obtained for the cross section standards: the H(n,n), 6Li(n,t), 10B(n,αγ), 10B(n,α), natC(n,n), Au(n,γ), 235U(n,f), and 238U(n,f) reactions. Also in the evaluation process, the 238U(n,γ) and 239Pu(n,f) nonstandard cross sections were evaluated. Many of these are dosimetry cross sections. Evaluations were also obtained for data that are not traditional standards: Maxwellian spectrum averaged cross section for the Au(n,γ) cross section at 30 keV, reference cross sections for prompt γ-ray production in fast neutron-induced reactions, reference cross sections for very high-energy fission cross sections, the 252Cf spontaneous fission neutron spectrum and the 235U thermal fission neutron spectrum, and the thermal constants. The data and covariances were obtained directly from this evaluation procedure as is required by the dosimetry community.

Author Information

Carlson, Allan
National Institute of Standards and Technology, Gaithersburg, MD, US
Pronyaev, Vladimir
Atomsrandart, Rosatom State Corporation, Moscow, RU
Capote, Roberto
NAPC-Nuclear Data Section, International Atomic Energy Agency, Vienna, AT
Hale, Gerald
Los Alamos National Laboratory, Los Alamos, NM, US
Duran, Ignacio
Universidad de Santiago de Compostela, ES
Hambsch, Franz-Josef
EC-JRC-Directorate G, Geel, BE
Kunieda, Satoshi
Nuclear Data Center, Japan Atomic Energy Agency, Ibaraki, JP
Mannhart, Wolf
Neutron Metrology Group, Physikalisch-Technische Bundesanstalt, Braunschweig, DE
Marcinkevicius, Benjaminas
Uppsala University, Uppsala, SE
Nelson, Ronald
Los Alamos National Laboratory, Los Alamos, NM, US
Noguere, Gilles
SPRC/LEPh, CEA Cadarache, FR
Schillebeeckx, Peter
EC-JRC-Directorate G, Geel, BE
Simakov, Stanislav
Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, DE
Tao, Xi
China Nuclear Data Center (CNDC), China Institute of Atomic Energy, Beijing,, CN
Trkov, Andrej
NAPC-Nuclear Data Section, International Atomic Energy Agency, Vienna, AT
Wallner, Anton
Research School of Physics and Engineering, The Australian National University, Canberra, AU
Wang, Wenming
China Nuclear Data Center (CNDC), China Institute of Atomic Energy, Beijing,, CN
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Developed by Committee: E10
Pages: 91–106
DOI: 10.1520/STP160820170069
ISBN-EB: 978-0-8031-7662-1
ISBN-13: 978-0-8031-7661-4