Satoshi Kunieda
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View article: FENDL: A library for fusion research and applications
FENDL: A library for fusion research and applications Open
The Fusion Evaluated Nuclear Data Library (FENDL) is a comprehensive and validated collection of nuclear cross section data coordinated by the International Atomic Energy Agency (IAEA) Nuclear Data Section (NDS). FENDL assembles the best n…
View article: Japanese evaluated nuclear data library version 5: JENDL-5
Japanese evaluated nuclear data library version 5: JENDL-5 Open
The fifth version of Japanese Evaluated Nuclear Data Library, JENDL-5, was developed. JENDL-5 aimed to meet a variety of needs not only from nuclear reactors but also from other applications such as accelerators. Most of the JENDL special …
View article: General-purpose Nuclear Data Library JENDL-5 and to the Next
General-purpose Nuclear Data Library JENDL-5 and to the Next Open
Japanese Evaluated Nuclear Data Library version 5 (JENDL-5) was released in 2021. JENDL-5 is intended to extend its generality from JENDL-4.0 by covering a wide variety of nuclear data for applications not only to nuclear design and decomm…
View article: Updates to the AMUR code for R-matrix analyses on heavy nuclei
Updates to the AMUR code for R-matrix analyses on heavy nuclei Open
The AMUR code, that had been initially designed for R-matrix analysis on light nuclei, was updated to perform resonance analyses on heavy nuclei by including approximated theories with experimental corrections such as resolution function. …
View article: Evaluation of light-element reactions in the resolved resonance region
Evaluation of light-element reactions in the resolved resonance region Open
Light-element reactions at low energies in the resolved resonance region are important for a range of applications in basic and applied sciences including nuclear reactors, nonproliferation, cultural heritage, forensics and environmental c…
View article: Present status of an R-matrix analysis code AMUR for cross-section evaluation in resolved resonance region
Present status of an R-matrix analysis code AMUR for cross-section evaluation in resolved resonance region Open
An R-matrix analysis code AMUR is being progressed in terms of the correction on the experimental conditions to the theoretical calculations. In this work, new broadening options are presented both for cross-sections and angular distributi…
View article: Estimation of double-differential cross-sections of 9Be(p,xn) reaction for new nuclear data library JENDL-5
Estimation of double-differential cross-sections of 9Be(p,xn) reaction for new nuclear data library JENDL-5 Open
Double-differential cross-sections of the 9Be(p,xn) reaction are newly evaluated based on the Wakabayashi’s function and neutronics analysis up to 12 MeV for a new nuclear data library, JENDL-5. We devoted our efforts especially to the re-…
View article: Benchmark study of particle and heavy-ion transport code system using shielding integral benchmark archive and database for accelerator-shielding experiments
Benchmark study of particle and heavy-ion transport code system using shielding integral benchmark archive and database for accelerator-shielding experiments Open
To validate the accuracy of the general-purpose Monte Carlo Particle and Heavy-Ion Transport code System (PHITS), a benchmark study of the recent version (version 3.24) of PHITS has been conducted using neutron-shielding experiments listed…
View article: Status of JENDL
Status of JENDL Open
Recent progress and future plan of the JENDL project are summarized. Two special purpose files were released recently. One is Photo-nuclear Data File 2016 (JENDL/PD-2016) which contains the data of photo-nuclear reaction cross sections cov…
View article: ACE library of JENDL-4.0/HE
ACE library of JENDL-4.0/HE Open
The Intra-Nuclear Cascade model employed into general-purpose Monte-Carlo simulation codes is not always applicable in the energy region from 20 MeV to several hundreds of MeV.In order to improve accuracy of the Monte-Carlo simulations inc…
View article: Evaluation of the Neutron Data Standards
Evaluation of the Neutron Data Standards Open
With the need for improving existing nuclear data evaluations, (e.g., ENDF/B-VIII.0 and JEFF-3.3 releases) the first step was to evaluate the standards for use in such a library. This new standards evaluation made use of improved experimen…
View article: CIELO Collaboration Summary Results: International Evaluations of Neutron Reactions on Uranium, Plutonium, Iron, Oxygen and Hydrogen
CIELO Collaboration Summary Results: International Evaluations of Neutron Reactions on Uranium, Plutonium, Iron, Oxygen and Hydrogen Open
The CIELO collaboration has studied neutron cross sections on nuclides that significantly impact criticality in nuclear technologies - U-235,U-238, Pu-239, Fe-56, O-16 and H-1 - with the aim of improving the accuracy of the data and resolv…
View article: Cutting-edge studies on Nuclear Data for Continuous and Emerging Need(5)
Cutting-edge studies on Nuclear Data for Continuous and Emerging Need(5) Open
IAEA核データセクション(NDS)は，核データの収集・整備・配布・教育を通じて，原子力・非原子力分野における核物理の成果の平和利用を半世紀以上にわたり支援している。これらはいずれも国際協力事業であり，核データの先進国である我が国の大学・研究機関の核データ研究者が長年にわたって貢献している。本稿ではセクションの概要と実施事業を紹介する。
View article: Nuclear data evaluation of long-lived fission products: Microscopic vs. phenomenological optical potentials
Nuclear data evaluation of long-lived fission products: Microscopic vs. phenomenological optical potentials Open
\nNeutron-nucleus cross sections calculated by macroscopic potentials are compared with a microscopic one to study the performance for long-lived fission products. The macroscopic potentials show a good agreement with the microscopic one a…
View article: Status of the R-matrix Code AMUR toward a consistent cross-section evaluation and covariance analysis for the light nuclei
Status of the R-matrix Code AMUR toward a consistent cross-section evaluation and covariance analysis for the light nuclei Open
\nWe report the status of the R-matrix code AMUR toward consistent cross-section evaluation and covariance analysis for the light-mass nuclei. The applicable limit of the code is extended by including computational capability for the charg…
View article: Cutting-edge studies on Nuclear Data for Continuous and Emerging Need(2)
Cutting-edge studies on Nuclear Data for Continuous and Emerging Need(2) Open
中性子輸送計算技術の発展に伴い，計算に用いられる中性子核データの精度向上へのニーズが急速に高まっている。中性子核データの高精度化を達成するには，高精度の測定実験が必須であるが，必要なデータの多様さと膨大さから基礎物理定数のような精度には及ばないのが現状である。本稿では，この困難を克服するため，現在取り組んでいる国内施設を活用した高精度測定研究の状況を紹介する。さらに，測定のみでは解決することが困難な課題を理論とのシナジーにより打破できる可能性について解説する。
View article: A new evaluation of the neutron data standards
A new evaluation of the neutron data standards Open
Evaluations are being done for the H(n,n), 6Li(n,t), 10B(n,αγ), 10B(n,α), C(n,n), Au(n,γ), 235U(n,f) and 238U(n,f) standard cross sections. Evaluations are also being done for data that are not traditional standards including: the Au(n,γ) …
View article: Status of the JENDL project
Status of the JENDL project Open
Status of the JENDL project after releasing the latest general purpose file JENDL-4.0 is described. By correcting errors and adding covariance data of JENDL-4.0, 38 files have been released as JENDL-4.0u. Development of next general purpos…
View article: Widening the Scope of R-matrix Methods
Widening the Scope of R-matrix Methods Open
A Consultant’s Meeting was held at the IAEA Headquarters, from 7 to 9 December 2015, to discuss the status of R-matrix codes currently used in calculations of charged-particle induced reaction cross sections at low energies. The ultimate g…
View article: Toward a New Evaluation of Neutron Standards
Toward a New Evaluation of Neutron Standards Open
Measurements related to neutron cross section standards and certain prompt neutron fission spectra are being evaluated. In addition to the standard cross sections, investigations of reference data that are not as well known as the standard…
View article: R-matrix Analysis for the<sup>8</sup>Be System and Features in the p+<sup>7</sup>Li Reaction Over Resonance Region
R-matrix Analysis for the<sup>8</sup>Be System and Features in the p+<sup>7</sup>Li Reaction Over Resonance Region Open
A comprehensive R-matrix analysis is currently underway for the 8Be compound system toward a consistent evaluation of the p+7Li reaction cross-sections over the resonance energy region. In this analysis, the energy eigenvalues are fixed to…