The joint evaluated fission and fusion nuclear data library 3.3 is described. New evaluations for neutron-induced interactions with the major actinides $^{235}\hbox {U}$, $^{238}\hbox {U}$ and $^{239}\hbox {Pu}$, on $^{241}\hbox {Am}$ and $^{23}\hbox {Na}$, $^{59}\hbox {Ni}$, Cr, Cu, Zr, Cd, Hf, W, Au, Pb and Bi are presented. It includes new fission yields, prompt fission neutron spectra and average number of neutrons per fission. In addition, new data for radioactive decay, thermal neutron scattering, gamma-ray emission, neutron activation, delayed neutrons and displacement damage are presented. JEFF-3.3 was complemented by files from the TENDL project. The libraries for photon, proton, deuteron, triton, helion and alpha-particle induced reactions are from TENDL-2017. The demands for uncertainty quantification in modeling led to many new covariance data for the evaluations. A comparison between results from model calculations using the JEFF-3.3 library and those from benchmark experiments for criticality, delayed neutron yields, shielding and decay heat, reveals that JEFF-3.3 performes very well for a wide range of nuclear technology applications, in particular nuclear energy.

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The joint evaluated fission and fusion nuclear data library, JEFF-3.3

This study aims to find various obstacles, describe, and provide strategies for parents when accompanying and providing direction to their children in distance learning. The method used in this research is the interview method. Interview, observation, listening, and note-taking techniques are data collection techniques used. The results of this study indicate that there are barriers for parents in distance learning. Among them are difficult internet signals, expensive internet quotas, and parents who are not able to fully guide and understand the material, so you have to ask your friends directly. The role of parents is very conducive to the academic success of a child. Always encourage and have innovations in child supervision so that children do not feel bored or even stressed in learning. There needs to be smooth coordination between parents and teachers. This assessment is needed to improve student learning outcomes. In the application of the home learning system, parents play an important role in the student learning process in the distance learning process at home today.

Strategies for Parent Involvement During Distance Learning in Arabic Lessons in Elementary Schools

Impact of neutron irradiation on the strength and ductility of pure and ZrC reinforced tungsten grades

ABSTRACT 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 purpose files published so far were integrated into JENDL-5 with revisions. JENDL-5 consists of 11 sublibraries: (1) Neutron, (2) Thermal scattering law, (3) Fission product yield, (4) Decay data, (5) Proton, (6) Deuteron, (7) Alpha-particle, (8) Photonuclear, (9) Photo-atomic, (10) Electro-atomic, and (11) Atomic relaxation. The neutron reaction data for a large number of nuclei in JENDL-4.0 were updated ranging from light to heavy ones, including major and minor actinides which affect nuclear reactor calculations. In addition, the number of nuclei of neutron reaction data stored in JENDL-5 was largely increased; the neutron data covered not only all of naturally existing nuclei but also their neighbor ones with half-lives longer than 1 day. JENDL-5 included the originally evaluated data of thermal scattering law and fission product yield for the first time. Light charged-particle and photon-induced reaction data were also included for the first time as the JENDL general purpose file. GRAPHICAL ABSTRACT

https://doi.org/10.1080/00223131.2022.2141903

Japanese evaluated nuclear data library version 5: JENDL-5

Development of a Reference Database for Beta-Delayed Neutron Emission

The challenge for any nuclear data evaluation project is to periodically release a revised, fully consistent and complete library, with all needed data and covariances, and ensure that it is robust and reliable for a variety of applications. Within an evaluation effort, benchmarking activities play an important role in validating proposed libraries. The Joint Evaluated Fission and Fusion (JEFF) Project aims to provide such a nuclear data library, and thus, requires a coherent and efficient benchmarking process. The aim of this paper is to present the activities carried out by the new JEFF Benchmarking and Validation Working Group, and to describe the role of the NEA Data Bank in this context. The paper will also review the status of preliminary benchmarking for the next JEFF-3.3 candidate cross-section files.

/pdf/benchmarking-and-validation-activities-within-jeff-project-3bdwsf1j9a.pdf

M. Pecchia

Papers

The joint evaluated fission and fusion nuclear data library, JEFF-3.3

Benchmarking and validation activities within JEFF project