Results 11 to 20 of about 94,410 (289)

Helium retention feature in the boron deposited layer on tungsten substrate by laser-induced breakdown spectroscopy and machine learning approach

Nuclear Materials and Energy
ITER is designed for a burning plasma operation in which Tungsten (W) tiles are used as the first wall and diverter materials. Studying He dynamics in B-coated W wall is essential to understanding the effect of boronized plasma-facing components in ...
Muhammad Amir Shabbir, Ran Hai, Zhonglin He, Zehua Liu, Fahad Rehman, Xue Bai, Jianping Mu, Ding Wu, Cong Li, Hongbin Ding   +9 more
doaj   +2 more sources

Investigation of the Processes of Retention and Release of Implanted Deuterium and Helium Ions for Tungsten and Tantalum Coatings

East European Journal of Physics
The analysis of main published results of studies of retention and migration of ion-implanted hydrogen isotopes and helium in tungsten and tantalum coatings, formation of radiation damages of the crystal lattice and their interaction with implanted gases,
M.O. Azarenkov, Valentin Bobkov, L.P. Tishchenko, Yu.I. Kovtunenko, A.O. Skrypnyk, D.I. Shevchenko, L.O. Gamayunova   +6 more
doaj   +3 more sources

Influence of near-surface helium on the deuterium retention and uptake in tungsten

Nuclear Materials and Energy
The effect of near-surface helium (He) on deuterium (D) retention and uptake into the bulk of tungsten (W) was investigated. To quantify the He influence on D uptake, He was implanted close to the surface with 3 keV energy at different fluences and ...
S. Markelj, T. Schwarz-Selinger, A. Šestan, J. Zavašnik, M. Kelemen   +4 more
doaj   +2 more sources

Deuterium retention in tungsten under the combined influence of displacement damage and helium

Nuclear Fusion
Accurate predictions of hydrogen isotope/tritium inventory in tungsten (W), used as a plasma-facing material in fusion reactors, can reduce the uncertainty associated with the self-sustaining fuel cycle.
Ting Wang, Xiu-Li Zhu, Mengchong Ren, Yue Yuan, Wangguo Guo, Shiwei Wang, Long Cheng, Di Hu, Yuhao Li, Guang-Hong Lu   +9 more
doaj   +2 more sources

MICROSTRUCTURE EVOLUTION AND DEUTERIUM RETENTION IN SS316 STEEL IRRADIATED WITH HEAVY IONS, HELIUM AND HYDROGEN

East European Journal of Physics, 2016
Using the methods of ion implantation, electron microscopy and nuclear reactions the data on defect microstructure evolution, accumulation levels and temperature ranges of retention of hydrogen isotope - deuterium in austenitic steel SS316 have been ...
S. A. Karpov, I. E. Kopanets, B. S. Sungurov, G. D. Tolstolutskaya, A. S. Kalchenko   +4 more
doaj   +1 more source

Temperature dependent study of helium retention in tungsten fuzz surfaces

Nuclear Materials and Energy, 2023
A temperature dependent study was performed on the helium retention in tungsten fuzz layers, in an attempt to provide further insight into the fuzz formation process and its relationship to the amount of trapped helium.
M.I. Patino, R.P. Doerner, T. Schwarz-Selinger, M.J. Baldwin, G.R. Tynan   +4 more
doaj   +1 more source

Molecular dynamics simulation on the effect of dislocation structures on the retention and distribution of helium ions implanted into silicon

Nanotechnology and Precision Engineering, 2020
To investigate the effect of dislocation structures on the initial formation stage of helium bubbles, molecular dynamics (MD) simulations were used in this study. The retention rate and distribution of helium ions with 2 keV energy implanted into silicon
Li Ji, Lei Liu, Zongwei Xu, Ying Song, Jintong Wu, Rongrong Li, Fengzhou Fang   +6 more
doaj   +1 more source

Investigation of helium exhaust dynamics at the ASDEX Upgrade tokamak with full-tungsten wall

Nuclear Fusion, 2023
An efficient removal of He ash by active pumping in future fusion devices is necessary to avoid fuel dilution and not degrade the core confinement properties. Therefore, a deep understanding of the underlying physics mechanisms is mandatory.
A. Zito, M. Wischmeier, A. Kappatou, A. Kallenbach, F. Sciortino, V. Rohde, K. Schmid, E.T. Hinson, O. Schmitz, M. Cavedon, R.M. McDermott, R. Dux, M. Griener, U. Stroth, the ASDEX Upgrade Team   +14 more
doaj   +1 more source

Tungsten evolution under helium irradiation: Shape of bubbles by TEM and in-situ GISAXS analysis

Nuclear Materials and Energy, 2023
The evolution of the tungsten microstructure and properties under helium irradiation could cause problems for both operational and safety reasons in fusion reactors.
L. Corso, S. Curiotto, E. Bernard, M. Cabie, C. Martin, L. Martinelli, F. Cheynis, P. Muller, F. Leroy   +8 more
doaj   +1 more source

LIBS plasma in atmospheric pressure argon, nitrogen and helium: Spatio-temporal distribution of plume emission and Hα linewidth

Nuclear Materials and Energy, 2023
Laser Induced Breakdown Spectroscopy (LIBS) method is considered for assessing the retention of hydrogen isotopes in the ITER plasma-facing components during the maintenance breaks when the reactor is filled with near atmospheric pressure nitrogen or ...
Indrek Jõgi, Jasper Ristkok, Jelena Butikova, Jüri Raud, Peeter Paris   +4 more
doaj   +1 more source