Results 41 to 50 of about 9,791 (334)

Effect of N2, Ne and Ar seeding on Alcator C-Mod H-mode confinement [PDF]

, 2011
The mitigation of divertor heat fluxes is an active topic of investigation on existing tokamaks. One approach uses radiation, both inside and outside the last closed flux surface (LCFS), to convert plasma thermal energy, usually directed towards ...
Brunner, Daniel Frederic, Hughes, John F., Hutchinson, Ian Horner, Labombard, Brian, Loarte, A., Payne, Joshua E., Reinke, Matthew Logan, Terry, James L   +7 more
core   +1 more source

The effects of impurity gas seeding on the growth of fuzzy tungsten

Journal of Nuclear Materials, 2021
Abstract Using the linear plasma device NAGDIS-II operating with gas mixtures of helium (He) and impurity (Ne, N 2 , Ar), fibre-form nanostructures known as “fuzz” have been grown on tungsten (W) samples. In this system, fuzzy W was grown over a range of sample temperatures and ion fluences (containing He and impurity ion mixtures), but with ...
Patrick McCarthy, Dogyun Hwangbo, Shin Kajita, James W. Bradley   +3 more
openaire   +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

Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade [PDF]

, 2017
The upgrade of the edge charge exchange recombination spectroscopy diagnostic at ASDEX Upgrade has enabled highly spatially resolved me asurements of the impurity ion dynamics during an edge-localized mode cycle ( ELM ) with unprecedented temp ...
A Burckhart, A Lebschy, E Viezzer, E Wolfrum, F M Laggner, F Mink, M Cavedon, M Dunne, M Willensdorfer, null null, R Fischer, T Pütterich, U Stroth   +12 more
core   +3 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

Transport analysis of high radiation and high density plasmas in the ASDEX Upgrade tokamak

EPJ Web of Conferences, 2014
Future fusion reactors, foreseen in the “European road map” such as DEMO, will operate under more demanding conditions compared to present devices. They will require high divertor and core radiation by impurity seeding to reduce heat loads on divertor ...
Casali L., Bernert M., Dux R., Fischer R., Kallenbach A., Kurzan B., Lang P., Mlynek A., McDermott R.M., Ryter F., Sertoli M., Tardini G., Zohm H.   +12 more
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

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Modelling of the X-point radiator configuration in DTT with SOLEDGE2D-Eirene

Nuclear Materials and Energy
This work studied the feasibility of an X-point radiator (XPR) in the DTT single-null full-power scenario using the edge modelling code SOLEDGE2D-EIRENE.
L. Balbinot, G. Rubino, I. Casiraghi, G. Calabrò, P. Innocente   +4 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