Results 91 to 100 of about 1,936 (209)

Integrated modelling of tungsten accumulation control with wave heating: validation in ASDEX Upgrade and predictions for ITER

Nuclear Fusion
In present-day fusion devices, central wave heating is crucial to avoid core tungsten (W) accumulation. In this work, we present an integrated modelling framework that reproduces the reduction of core W peaking in ASDEX Upgrade experiments when multiple ...
D. Fajardo, C. Angioni, E. Fable, G. Tardini, R. Bilato, T. Luda, R.M. McDermott, O. Samoylov, the ASDEX Upgrade Team   +8 more
doaj   +1 more source

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang, Hongying Luo, Yudong Du, Kehao Yu, Huayu Wu, Shimin Chai, Yanyan Liu, Yongfeng Wang, Jianchun Jiang, Baojun Li   +9 more
wiley   +1 more source

Impurity behaviour in the ASDEX Upgrade divertor tokamak with large area tungsten walls

, 2002
At the central column of ASDEX Upgrade, an area of 5.5 m(2) of graphite tiles was replaced by tungsten-coated tiles representing about two-thirds of the total area of the central column.
Pugno, R., Gruber, O., Laux, M., Rohde, V., Dux, R., Hobirk, J., Neu, R., Zohm, H. ; https://orcid.org/, Kaufmann, M., Neuhauser, J., Suttrop, W., Geier, A., Sips, A., ASDEX Upgrade Team, Murmann, H., Stober, J., Stäbler, A., Gehre, O., Ryter, F., Krieger, K., Bolshukhin, D., Maggi, C., Fuchs, J., Kallenbach, A.   +23 more
core  

Investigation of Carbon Transport by 13ch4 Injection Through Graphite and Tungsten Test Limiters in TEXTOR [PDF]

, 2005
(CH4)-C-13 was injected through graphite and tungsten spherical limiters in reproducible TEXTOR discharges. These materials were chosen, as they represent the actual compromise for the plasma facing components in the ITER divertor. C-13 was used in order
Sakawa, Y., Hirai, T., Samm, U., Mayer, M., Schmitz, O., Litnovsky, A., TEXTOR Team, Wienhold, P., Brezinsek, S., Kirschner, A., Tanabe, T., Droste, S., Borodin, D., Philipps, V., Pospieszczyk, A., Sergienko, G., Kreter, A., Ueda, Y.   +17 more
core   +1 more source

Simulation study of the influence of the outer target geometry on tungsten contamination: Horizontal vs. vertical target

Nuclear Materials and Energy
The core tungsten (W) concentration must be limited to an extremely low level for future fusion reactors. It was found that the effects of E × B drift can lead to a dramatic increase in the core W concentration in our recent work [J.
Hongxin Ding, Jin Guo, Shifeng Mao, Xinglei Ruan, Yuchen Xu, Minyou Ye   +5 more
doaj   +1 more source

Tellurium Electrochemistry: From Mechanistic Analysis in Diverse Electrolytic Media to Advanced Energy Storage Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
As a metalloid with broad prospects in advanced applications, Te has not been fully clarified in terms of its intricate electrochemical behaviors across varied systems. This review systematically integrates fundamental electrochemical mechanisms, reaction kinetics identifications, and device application insights, establishing a comprehensive framework ...
Meng Zhang, Jiguo Tu, R. Vasant Kumar, Libo Chen, Tangkai Wu, Lili Jiang, Shuqiang Jiao   +6 more
wiley   +1 more source

Photooxidation of 18‐Carbon Polyunsaturated Fatty Acids to Prepare Mono‐Hydroxylated Octadecanoids

Lipids, EarlyView.
We developed a fast and simple one‐step synthetic strategy to produce mono‐hydroxylated metabolites based on the photosensitized oxidation of 18‐carbon polyunsaturated fatty acids (PUFAs). This approach could likely be extended to other PUFAs, suggesting that photosensitized oxidation could be employed to rapidly prepare hydroperoxides from multiple ...
Johanna Revol‐Cavalier, Mats Hamberg, Craig E. Wheelock   +2 more
wiley   +1 more source

Ab initio modelling of impurity induced intergranular fracture in tungsten

, 2019
Owing to its attractive material properties, tungsten (W) and its alloys are considered to be the leading solid material candidates for plasma-facing components in future fusion devices such as the Tokamak reactors in the international thermonuclear ...
Blomqvist, Jakob,, Olsson, Pär,
core   +1 more source

Understanding Light‐Soaking Effects in Silicon Solar Cells by Considering Charge Carrier‐Enhanced Atomic Hydrogen Release

Progress in Photovoltaics: Research and Applications, EarlyView.
We show that many hydrogen‐related effects in silicon solar cells can be explained by direct electron‐assisted acceptor‐hydrogen pair dissociation. Most importantly, it leads to a high concentration of atomic hydrogen, which is highly reactive and diffusive. We provide a unified physical description of LeTID.
Wolfram Kwapil, Jonas Schön, Benjamin Hammann, Fabian T. Thome, Stefan W. Glunz   +4 more
wiley   +1 more source

Modeling of tungsten transport in the SOL for sources at the central column of ASDEX Upgrade using DIVIMP

, 2003
Tungsten erosion at the central column and tungsten transport in the scrape-off layer of ASDEX Upgrade have been modeled with the 2D Monte-Carlo impurity transport code DIVIMP.
Pugno, R., Elder, J., Rohde, V., Krieger, K., Geier, A., ASDEX Upgrade Team   +5 more
core   +1 more source