A. J. Koning
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View article: New measurements of (p,xp) and (p,x$$\alpha $$) reactions on $$ ^{27}$$Al at 7.0, 22.0 and 30.0 MeV
New measurements of (p,xp) and (p,x$$\alpha $$) reactions on $$ ^{27}$$Al at 7.0, 22.0 and 30.0 MeV Open
We present new experimental data for the inclusive (p,xp) and (p,x $$\alpha $$ ) reactions on $$ ^{27}$$ Al target. Double-differential cross sections of (p,xp) at energies 7, 22, 30 MeV and (p,x $$\alpha $$ ) at energies 22, 30 MeV…
View article: Analytic Sensitivity Coefficients for Bethe's Solution of the Neutron Slowing Down Equation
Analytic Sensitivity Coefficients for Bethe's Solution of the Neutron Slowing Down Equation Open
The aim of this document is to lay out a first draft of the specifications for the MEDUSAL database (Machine-readable Experimental Data User App & Library) that is being described by OECD/NEA/WPEC SG-50. The EXFOR database (Otuka et al., 2…
View article: Modeling Pu-239 Fission Fragment De-Excitation applying the Total Monte Carlo method in TALYS
Modeling Pu-239 Fission Fragment De-Excitation applying the Total Monte Carlo method in TALYS Open
In this study, we applied the Total Monte Carlo (TMC) methodology in de-excitation simulations of primary fission fragments (FF) using the TALYS code. The goal was to develop and optimise a methodology to benchmark initial fission model as…
View article: Random files for fission fragment evaporation in TALYS: a total Monte Carlo approach
Random files for fission fragment evaporation in TALYS: a total Monte Carlo approach Open
In this study, we have applied the Total Monte Carlo (TMC) methodology in the simulation of the de-excitation process of primary fission fragments (FF) within the TALYS code. Our objective was to develop a method for assessing fission mode…
View article: What to expect from microscopic nuclear modelling for keff calculations?
What to expect from microscopic nuclear modelling for keff calculations? Open
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View article: Bayesian Model Averaging (BMA) for nuclear data evaluation
Bayesian Model Averaging (BMA) for nuclear data evaluation Open
To ensure agreement between theoretical calculations and experimental data, parameters to selected nuclear physics models, are perturbed, and fine-tuned in nuclear data evaluations. This approach assumes that the chosen set of models accur…
View article: Prompt-fission observable and fission yield calculations for actinides by TALYS
Prompt-fission observable and fission yield calculations for actinides by TALYS Open
The nuclear reaction code TALYS adopts the Hauser-Feshbach statistical decay theory, to de-excite fission fragments. This involves for instance the evaporation of prompt fission neutrons and γ -rays. TALYS incorporates databases of primary…
View article: Developing a New Web Service for Experimental Nuclear Reaction Database (EXFOR) Using RESTful API and JSON
Developing a New Web Service for Experimental Nuclear Reaction Database (EXFOR) Using RESTful API and JSON Open
Efficient data mining from the Experimental Nuclear Reaction Database (EXFOR) has a potential for utilization of modern computational analysis techniques to find trends, shortcomings and hidden patterns in the database, which in turn helps…
View article: Global comparison between experimentally measured isomeric yield ratios and nuclear model calculations
Global comparison between experimentally measured isomeric yield ratios and nuclear model calculations Open
The level density steers transition probabilities between different states in the decay and de-excitation of excited nuclei. Reliable level density modelling is, therefore, key in describing, e.g., de-excitation of fission fragments, with …
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: TALYS calculations of prompt fission observables and independent fission product yields for the neutron-induced fission of $$^{235}$$U
TALYS calculations of prompt fission observables and independent fission product yields for the neutron-induced fission of $$^{235}$$U Open
The TALYS nuclear reaction code’s Hauser-Feshbach statistical decay model has been adapted in order to calculate prompt fission neutron and $$\gamma $$ -ray observables by iterating over deexciting fission fragments. Several fission fragm…
View article: Compilation of isomeric ratios of light particle induced nuclear reactions
Compilation of isomeric ratios of light particle induced nuclear reactions Open
Experimental isomeric ratios of light (A$\le$4) particle-induced nuclear reactions were compiled for the product nuclides having metastable states with half-lives longer than 0.1 sec. The experimental isomeric ratio data were taken from th…
View article: STEK: A potential fast spectrum benchmark for fission product cross sections
STEK: A potential fast spectrum benchmark for fission product cross sections Open
The reactivity worth of many fission product samples was measured in fast spectrum conditions in the STEK facility during the early 1970s. These results were then used to improve and validate nuclear data evaluations for fission products, …
View article: Templates of expected measurement uncertainties
Templates of expected measurement uncertainties Open
The covariance committee of CSEWG (Cross Section Evaluation Working Group) established templates of expected measurement uncertainties for neutron-induced total, (n, γ ), neutron-induced charged-particle, and (n,xn) reaction cross sections…
View article: Covariances from model variation: Application to quantities for astrophysics
Covariances from model variation: Application to quantities for astrophysics Open
In this work, covariance matrices coming from model variations, in contrast to the usual parameter variations, are presented. The considered phenomenological and microscopic models are included in the code TALYS, and concern level densitie…
View article: Templates of expected measurement uncertainties for (n, xn) cross sections
Templates of expected measurement uncertainties for (n, xn) cross sections Open
A template is provided for evaluating experimental uncertainties for neutron elastic and inelastic scattering cross sections and γ -ray production cross sections from (n, xn) measurements at laboratories with monoenergetic or white neutron…
View article: WPEC SG50: Developing an Automatically Readable, Comprehensive and Curated Experimental Nuclear Reaction Database
WPEC SG50: Developing an Automatically Readable, Comprehensive and Curated Experimental Nuclear Reaction Database Open
The Organisation for Economic Co-operation and Development (OECD) Nuclear Energy Agency (NEA) Working Party on International Nuclear Data Evaluation Co-operation (WPEC) subgroup (SG) 50 was formed in 2020 to develop an automatically readab…
View article: First Report of the Nuclear Data Subcommittee of the Nuclear Science Advisory Committee
First Report of the Nuclear Data Subcommittee of the Nuclear Science Advisory Committee Open
Accurate, reliable nuclear data is essential for the success of Federal missions such as nonproliferation, nuclear forensics, homeland security, national defense, space exploration, clean energy generation, and scientific research. Data ac…
View article: Radioisotope Products and the Medicine of the Future: an IAEA Perspective
Radioisotope Products and the Medicine of the Future: an IAEA Perspective Open
The production and application of radioisotopes and radiopharmaceuticals is a major peaceful application of nuclear science and technology and has opened new gateways for nuclear medicine in critical human diseases. Advances in the product…
View article: Impact of H in H<sub>2</sub>O thermal scattering data on criticality calculation: uncertainty and adjustment
Impact of H in H<sub>2</sub>O thermal scattering data on criticality calculation: uncertainty and adjustment Open
In this paper, the impact of the thermal scattering data for H in H 2 0 is estimated on criticality benchmarks, based on the variations of the CAB model parameters. The Total Monte Carlo method for uncertainty propagation is applied for 63…
View article: Advanced breakup-nucleon enhancement of deuteron-induced reaction cross sections
Advanced breakup-nucleon enhancement of deuteron-induced reaction cross sections Open
Following the EUROfusion PPPT-programme action for an advanced modeling approach of deuteron-induced reaction cross sections, as well as specific data evaluations in addition of the TENDL files, an assessment of the details and correspondi…
View article: Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV
Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV Open
72As is a promising positron emitter for diagnostic imaging that can be employed locally using a 72Se generator. However, current reaction pathways to 72Se have insufficient nuclear data for efficient production using regional 100–200 MeV …