Results 21 to 30 of about 1,389,932 (266)

Development of core design optimization process by integrated analysis with neutronics and plant dynamics

Mechanical Engineering Journal, 2023
A core design optimization process is developed as part of the design optimization support tool named ARKADIA (Advanced Reactor Knowledge- and AI-aided Design Integration Approach through the whole plant lifecycle) for an efficient and innovative core ...
Erina HAMASE, Kazuki KUWAGAKI, Norihiro DODA, Kenji YOKOYAMA, Masaaki TANAKA   +4 more
doaj   +1 more source

First-principles calculations of the diffusion of atomic oxygen in nickel: thermal expansion contribution [PDF]

, 2007
Within the framework of density functional theory using the projector augmented-wave (PAW) method, we present some energetic properties of atomic oxygen interstitials in crystalline Ni, i.e.
Amarouche, Mohand, Megchiche, El Hocine, Mijoule, Claude   +2 more
core   +3 more sources

Development of active neutron nondestructive assay system [PDF]

EPJ Web of Conferences
The assay of Special Nuclear Materials (SNM) and Minor Actinides (MA) in highly-radioactive nuclear materials poses a significant challenge for nuclear non-proliferation and security. No single nondestructive method can provide acceptable and practicable
Toh Yosuke, Ohzu Akira, Tsuchiya Harufumi, Furutaka Kazuyoshi, Kitatani Fumito, Komeda Masao, Maeda Makoto, Koizumi Mitsuo   +7 more
doaj   +1 more source

Progress in Chlorination and Dissolution Technology of Oxides of Uranium and Plutonium

He huaxue yu fangshe huaxue, 2022
The dissolution process of oxides is a key step in the pyrochemical process of spent oxide fuel by electrolyzing in molten salt. The dissolved products will provide feeds for subsequent separation and recovery of U and Pu.
MENG Zhao-kai, LIN Ru-shan, CHEN Hui, SONG Wen-chen, WANG Chang-shui, HE Hui, YE Guo-an   +6 more
doaj   +1 more source

Sudden To Adiabatic Transition in Beta Decay [PDF]

, 1998
We discuss effects in beta decays at very low beta energies, of the order of the kinetic energies of atomic electrons. As the beta energy is lowered the atomic response changes from sudden to adiabatic.
A. Migdal, A. S. Davydow, E. G. Drukarev, G. Karl, J. Chizma, L. Durand, L. Durand, L. I. Schiff, Lowell Brown, M. E. Rose, V. A. Novikov, Y. Isozumi   +11 more
core   +3 more sources

Evaluation of important phenomena through the PIRT process for a sodium fire event

Nihon Kikai Gakkai ronbunshu, 2020
Sodium fire is one of key issues in sodium-cooled fast reactor (SFR) plants. JAEA has developed sodium fire analysis codes, a zone model code SPHINCS and a field model code AQUA-SF, to evaluate the consequence of sodium fire events.
Mitsuhiro AOYAGI, Akihiro UCHIBORI, Shin KIKUCHI, Takashi TAKATA, Shuji OHNO, Hiroyuki OHSHIMA   +5 more
doaj   +1 more source

Extraction of Uranium From Alkali Residue With Supercritical Carbon Dioxide Fluid

He huaxue yu fangshe huaxue, 2023
Alkali residue was dissolved by the ammonium hydrogen fluoride method, in which the uranium content is determined to be (16.7±0.3)%(n=6) by inductively coupled plasma optical emission spectrometry(ICP-AES).
GANG Fa-yuan, SONG Zhi-jun, DING You-qian, WANG Xiu-feng, YU Zhen-hua, SUN Xue-jie, BAI Long   +6 more
doaj   +1 more source

Crystallization of Simulated High-Level Nuclear Waste Glasses Under Heat Treatment and Its Impacts on Glass Durability

He huaxue yu fangshe huaxue, 2023
Vitrification is currently the primary choice worldwide for high-level nuclear waste immobilization. This study investigated the crystallization behaviors of glasses containing 24%(mass fraction) and 30% simulated high-level nuclear waste, respectively ...
CHANG Jiong, ZHU Dong-dong, WANG Jia-teng, HE Cheng, LIU Xiao, ZHANG Hua, TAN Sheng-heng   +6 more
doaj   +1 more source

Low energy atomic collision with dipole interactions [PDF]

, 2001
We apply quantum defect theory to study low energy ground state atomic collisions including aligned dipole interactions such as those induced by an electric field.
A. J. Moerdijk, B. Deb, B. Gao, B. Gao, B. Gao, C. C. Bradley, C. C. Bradley, C. Cohen-Tannoudji, C. Greene, C. H. Greene, E. Tiesinga, E. Tiesinga, J. L. Bohn, J. M. Vogels, K. B. Davis, K. Huang, L. You, L. You, M. Anderson, M. J. Cavagnero, M. J. Seaton, M. Marinescu, M. Marinescu, P. O. Fedichev, S. Chu, T. Y. Wu, U. Fano, U. Fano, W. D. Philips   +28 more
core   +2 more sources

Machine-learning of atomic-scale properties based on physical principles

, 2019
We briefly summarize the kernel regression approach, as used recently in materials modelling, to fitting functions, particularly potential energy surfaces, and highlight how the linear algebra framework can be used to both predict and train from linear ...
A Glielmo, A Grisafi, A Haar, AAP Bartók, AN Tikhonov, AP Bartók, AP Bartók, AP Bartók, AP Bartók, AP Thompson, B Cheng, B Huang, B Schölkopf, BJ Braams, C Zeni, CE Rasmussen, CM Bishop, D Dragoni, DA Varshalovich, DM Wilkins, DW Brenner, E Prodan, EV Podryabinkin, F Faber, FA Faber, FA Faber, FM Paruzzo, G Galli, G Imbalzano, GR Medders, H Eshet, J Behler, J Tersoff, JA Hartigan, JA Moriarty, JQ Quinonero-Candela, JS Smith, KT Schütt, L Zhang, M Ceriotti, M Ceriotti, M Cuturi, M Rupp, MA Caro, MJ Willatt, MJ Willatt, MW Finnis, MW Mahoney, N Bernstein, P Rowe, R Drautz, S Chmiela, S De, S Fujikake, S Goedecker, S Kajita, S Prabhakaran, ST John, T Morawietz, TF Gonzalez, TT Nguyen, VL Deringer, VL Deringer, W Yang, WJ Szlachta   +64 more
core   +1 more source