Results 41 to 50 of about 1,348 (158)

SOLPS-ITER drift modelling of JET Ne and N-seeded H-modes

Nuclear Materials and Energy, 2021
A numerical study is presented, using the SOLPS-ITER plasma boundary code with full drifts and currents activated, of impurity seeded JET discharges in support of high power H-mode experimental campaigns designed to compare two ITER candidate seeding ...
Elizaveta Kaveeva, Vladimir Rozhansky, Irina Veselova, Ilya Senichenkov, Carine Giroud, Richard A. Pitts, Sven Wiesen, Serguey Voskoboynikov   +7 more
doaj   +1 more source

Impurities in alfalfa seed and their impact on processing technology

Journal on Processing and Energy in Agriculture, 2012
The aim of this research was to determine relevant parameters and optimal alfalfa seed processing technology by a comparative analysis of two systems of machinery for processing natural alfalfa seed of different purity (59.0% and 71.0%) and with different content of impurities. The relevant parameters monitored during the test were: pure seed (%), weed
Đokić, Dragoslav, Stanisavljević, Rade, Marković, Jordan, Terzić, Dragan, Anđelković, Bojan   +4 more
openaire   +2 more sources

Deuterium retention in tungsten and tungsten alloys exposed to pure and impurities seeding deuterium plasma

Nuclear Materials and Energy, 2020
Polycrystalline tungsten (W) and four kinds of tungsten alloys were exposed to pure and impurities seeding deuterium (D) plasma to investigate the deuterium retention behaviour. The results show that D retention in W increases with the increasing fluence
Hong Zhang, Xuexi Zhang, Li Qiao, Peng Wang   +3 more
doaj   +1 more source

Spectroscopic investigation of N and Ne seeded induced detachment in JET ITER-like wall L-modes combining experiment and EDGE2D modeling

Nuclear Materials and Energy, 2019
Modeling and experimental investigation of the distribution of seeded impurities and their influence on divertor detachment in all-metal tokamaks is critical for developing reactor-scale exhaust scenarios. In this work, the degree and operating space for
B. Lomanowski, M. Carr, A. Field, M. Groth, A.E. Jaervinen, C. Lowry, A.G. Meigs, S. Menmuir, M. O'Mullane, M.L. Reinke, C.K. Stavrou, S. Wiesen   +11 more
doaj   +1 more source

The influence of E× B drift on tungsten target erosion and W impurity transport during neon seeding on EAST

Nuclear Fusion, 2023
Mitigating tungsten (W) wall erosion and core accumulation are vitally important for the steady-state operation of tokamaks. It is well known that drifts have a great impact on the transport of charged particles in the edge region, which could affect W ...
Yilin Wang, Chaofeng Sang, Xuele Zhao, Yihan Wu, Qingrui Zhou, Yanjie Zhang, Dezhen Wang   +6 more
doaj   +1 more source

Experimental research on the deeply detached X-point radiator regime on EAST

Nuclear Fusion
Radiative divertor detachment with impurity seeding is considered one of the most promising means for mitigating particle and heat fluxes on the divertor target.
Baoguo Wang, Rong Yan, Kedong Li, Dahuan Zhu, Rui Ding, Beihe Zhang, Kai Wu, Xin Lin, Binfu Gao, Lingyi Meng, Jianhua Yang, Lin Yu, Yanmin Duan, Jinju Yang, Kangning Geng, Qing Zhang, Tao Zhang, Fudi Wang, Yifei Jin, Hailin Zhao, Bin Zhang, Pengfei Zhou, Chunyu He, Yang Wang, Liang Wang, Junling Chen, the EAST Team   +26 more
doaj   +1 more source

Enrichment of impurities seeded for exhaust control in a spherical tokamak power plant geometry

Nuclear Fusion
Through SOLPS-ITER simulations, we have investigated the ability of seeded argon and neon impurities to effectively control divertor power loading in a power-plant-class spherical tokamak geometry.
S.L. Newton, R.T. Osawa, S.S. Henderson, D.J. Moulton, O. Myatra, V. Badicel   +5 more
doaj   +1 more source

Impact of seeded plasma impurities on D retention in RAFM steels

Nuclear Materials and Energy, 2020
The effect of He seeding (He+ ion fraction, cHe+, of ~5 and ~10%) to D plasma (ion flux ~ 1.5–2 × 1021 m−2s−1, sample temperature ~ 373 K, and incident ion energy ~ 100 eV) on D retention in various reduced-activation ferritic/martensitic (RAFM) steels ...
D. Nishijima, M. Tokitani, M.I. Patino, D. Nagata, A.V. Golubeva, R.P. Doerner   +5 more
doaj   +1 more source

Impurity-free seeded crystallization of amorphous silicon by nanoindentation

Journal of Applied Physics, 2011
We demonstrate that nanoindents formed in amorphous Si films, with dimensions as small as ∼20 nm, provide a means to seed solid phase crystallization. During post-indentation annealing at ∼600 °C, solid phase crystallization initiates from the indented sites, effectively removing the incubation time for random nucleation in the absence of seeds.
Ruffell, S., Knights, A. P., Bradby, J. E., Williams, J. S.   +3 more
openaire   +2 more sources

Divertor enrichment of recycling impurity species (He, N2, Ne, Ar, Kr) in ASDEX Upgrade H-modes

Nuclear Fusion
Particle balance calculations are done for the seeding species N _2 , Ne, Ar, Kr as well as He with the aim of obtaining a realistic description of the divertor and core plasma impurity content.
A. Kallenbach, R. Dux, S.S. Henderson, C. Tantos, M. Bernert, C. Day, R.M. McDermott, V. Rohde, A. Zito, the ASDEX Upgrade Team   +9 more
doaj   +1 more source