Results 21 to 30 of about 1,348 (158)

Impurity transport studies in ASDEX by means of neon-seeded pellets [PDF]

Nuclear Fusion, 1989
Neon-seeded deuterium pellets, containing 1% neon, were successfully produced and injected into ASDEX divertor discharges. The behaviour of the deposited neon ions was studied by VUV spectroscopy, using a special version of the ASDEX/JET impurity transport code for interpretation.
Behringer, K., Buechl, K.
openaire   +2 more sources

Effects of argon on deuterium retention in polycrystalline tungsten under single, sequential and simultaneous ion irradiation

Nuclear Materials and Energy, 2019
Argon is one of the candidates for impurity seeding in the ITER divertor; however, few studies exist on either Ar retention in W, or its effect on D retention in W.
J.A. Shanahan, T.J. Finlay, J.W. Davis, A.A. Haasz   +3 more
doaj   +1 more source

Growth process of nano-tendril bundles with sputtered tungsten

Nuclear Materials and Energy, 2019
Nano-tendril bundles (NTBs) were generated in DC He plasma with impurity gas-seeding (Ne and N2) under sputtering-dominated conditions. NTB morphologies were characterized using the net erosion yield of samples.
Dogyun Hwangbo, Shin Kajita, Hirohiko Tanaka, Noriyasu Ohno   +3 more
doaj   +1 more source

Integration of high confinement, high poloidal beta plasma with dual radiated power and detachment controls for divertor protection and ELM suppression

Nuclear Materials and Energy, 2023
Divertor detachment without serious core confinement quality loss in DIII-D’s high poloidal β scenario has been combined with impurity-induced ELM mitigation without disruption.
D. Eldon, H.Q. Wang, L. Wang, S. Ding, A.M. Garofalo, X.Z. Gong, A.G. McLean, F. Scotti, J.G. Watkins, D. Weisberg   +9 more
doaj   +1 more source

Tungsten erosion and divertor leakage from the DIII-D SAS-VW tungsten-coated divertor in experiments with neon gas seeding

Nuclear Materials and Energy, 2023
Collector probes have been used to examine tungsten divertor leakage in a variety of scenarios with low-Z impurity seeding during operation with the new tungsten-coated SAS-VW divertor in DIII-D.
Matthew S. Parsons, Jeremy D. Mateja, Seth H. Messer, Tyler Abrams, Jean Paul Allain, Alessandro Bortolon, Patrick Byrne, David C. Donovan, Florian Effenberg, Jeffrey L. Herfindal, Florian Laggner, Tomas Odstrcil, Jun Ren, Dmitry L. Rudakov, Gregory Sinclair, Robert S. Wilcox   +15 more
doaj   +1 more source

Corrigendum: Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV (2023 Nucl. Fusion 63 026006)

Nuclear Fusion, 2023
In the published paper titled ‘Model-based impurity emission front control using deuterium fueling and nitrogen seeding in TCV’ (2023 Nucl. Fusion 63 026006), the legend of figure 5 shows the wrong colors: red and blue are switched.
J.T.W. Koenders, A. Perek, B. Kool, O. Février, T. Ravensbergen, C. Galperti, B.P. Duval, C. Theiler, M. van Berkel, the TCV Team, the EUROfusion MST1 Team   +10 more
doaj   +1 more source

Use of impurities to increase yield of seeds for food purposes

Naukovì Dopovìdì Nacìonalʹnogo Unìversitetu Bìoresursiv ì Prirodokoristuvannâ Ukraïni, 2021
The growth-stimulating activity of the drug "Humir", created on the basis of humates, polyethylene oxides, wastes of yeast production, hydrated fullerenes and other BAS is investigated. The introduction of these components in the technology of crop production requires careful study of the properties of drugs based on them in specific soil and climatic ...
L. V. Krychkovska, M. A. Bobro, P. Y. Lysak, Y. A. Gritsayenko   +3 more
openaire   +2 more sources

Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak

Nuclear Fusion
Divertor asymmetry is a major challenge in achieving high-power, long-pulse discharges in future fusion reactors. Impurity seeding is the most common method for achieving divertor detachment in fusion devices.
Qingyi Tan, Haoran Ye, Xueyu Gong, Yijun Zhong, Qianhong Huang, Zhe Wang, Chengzhi Cao, Zhanhui Wang, Cailong Fu, Min Xu, Tao Yang   +10 more
doaj   +1 more source

COREDIV modelling of JET ILW discharges with different impurity seeding: nitrogen, neon, argon and krypton

Nukleonika, 2017
Numerical simulations with the COREDIV code of JET H-mode discharges with 25 MW of auxiliary heating in the ITER-like wall (ILW) configuration with different impurity seedings – nitrogen (N), neon (Ne), argon (Ar) and krypton (Kr) – are presented.
Ivanova-Stanik Irena, Zagórski Roman,
doaj   +1 more source

Observation of the significant reductions of electron density and electron temperature in a cascaded arc high density argon plasma with ammonia seeding comparing with nitrogen seeding by laser Thomson scattering approach

Nuclear Materials and Energy, 2022
In this work, the influences of ammonia (NH3) seeding on the electron density (ne) and electron temperature (Te) in a high-density cascaded arc argon plasma have been investigated by laser Thomson scattering. As NH3 seeding ratio increases from 0% to 2%,
Yong Wang, Jielin Shi, Yu Li, Cong Li, Chunlei Feng, Hongbin Ding   +5 more
doaj   +1 more source