Results 121 to 130 of about 3,423,360 (305)

Impact of drift flows and turbulence on island divertor operation in Wendelstein 7-X

Nuclear Fusion
The island divertor in Wendelstein 7-X employs a chain of stationary magnetic islands to separate the confined plasma from the divertor targets. In this configuration, the scrape-off layer (SOL) exhibits complex patterns of counter-propagating bi-normal ...
Carsten Killer, Dario Cipciar, Arun Pandey, Valeria Perseo, Floris Scharmer, Seung Gyou Baek, Olaf Grulke, David Matthew Kriete, Felix Reimold, Adrian von Stechow, the W7-X Team   +10 more
doaj   +1 more source

Experimental observations of bifurcated power decay lengths in the near Scrape-Off Layer of tokamak plasmas [PDF]

The scrape-off layer parallel heat flux decay lengths measured at ST40, a high field, low aspect ratio spherical tokamak, have been observed to bifurcate into two groups.
Lopez, N A, Lowe, H F, Marsden, C, Zhang, X, Janhunen, S, Romanelli, M, Robinson, M, Buxton, P F, Sertoli, M, Team, the ST40, OGorman, T, Scarabosio, A, Maartensson, E, Vekshina, E, Moscheni, M, Rengle, A, Gray, T K   +16 more
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Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

First simultaneous observation of co- and counter-current fast-ion losses in the ASDEX Upgrade tokamak

Nuclear Fusion
In ITER and future fusion power plants, the source of the fusion born alpha particles is almost isotropic in pitch angle, thus having co- and counter-current populations.
A. Reyner-Viñolas, J. Hidalgo-Salaverri, J. Galdon-Quiroga, J. Rueda-Rueda, J. Gonzalez-Martin, J.M. Ordoñez-Jimenez, R. Marques, M. Jimenez-Comez, P.A. Schneider, R. Bilato, M. Garcia-Muñoz, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team   +12 more
doaj   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Characterization of detachment inferred from the Balmer line ratios in JET-ILW low-confinement mode plasmas

Nuclear Materials and Energy
Spectroscopic measurements of the hydrogenic Balmer-α and Balmer-γ line emission in JET-ILW low-confinement mode (L-mode) deuterium plasmas are used to assess the onset of volume recombination in the low-field side (LFS) divertor.
Vesa-Pekka Rikala, M. Groth, A.G. Meigs, D. Reiter, B. Lomanowski, A. Shaw, S. Aleiferis, G. Corrigan, I.S. Carvalho, D. Harting, N. Horsten, I. Jepu, J. Karhunen, K.D. Lawson, C. Lowry, S. Menmuir, B. Thomas, D. Borodin, D. Douai, A. Huber   +19 more
doaj   +1 more source

Scrape Off Layer turbulence and flow velocity measurements with the Li-beam diagnostic [PDF]

, 2016
This work studies the behavior of the plasma in the outer part of the vessel, where the magnetic field lines are no longer closed, this part in called scrape off layer. The machine studied is the experimental fusion reactor ASDEX upgrade. This chapter
Rodriguez Serra, Jorge
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Highly Sensitive Broadband Photodetectors Based on Donor–Acceptor 2D Conjugated Coordination Polymers

Advanced Materials, EarlyView.
Donor–acceptor molecular design and chemical vapor deposition growth enable the two‐dimensional nickel‐tetraaminobenzoquinone films with strong broadband absorption and efficient charge separation. The resulting photodetectors exhibit a structured broadband response with a high responsivity of ∼3.1 A W−1 and a response time of ∼170 µs, which surpasses ...
Yunxu Chen, Jinxin Liu, Shuai Fu, Apurba Mahapatra, Dongxu Wang, Mike Hambsch, Angelika Wrzesińska‐Lashkova, Jing Wang, Fabian Paulus, Yana Vaynzof, Stefan C. B. Mannsfeld, Fuchun Zhang, Mischa Bonn, Renhao Dong, Xinliang Feng   +14 more
wiley   +1 more source

ICRF resonance cones in the low-density scrape-off-layer of ASDEX Upgrade

Nuclear Fusion
The ICRF slow wave is a potential carrier for parallel RF electric fields known to cause unwanted plasma-wall interactions in magnetic confinement fusion experiments.
Felix Paulus, Volodymyr Bobkov, Helmut Faugel, Helmut Fünfgelder, Oleksii Girka, Gustavo Grenfell, Roman Ochoukov, Wouter Tierens, Hartmut Zohm, the ASDEX Upgrade Team   +9 more
doaj   +1 more source

Nonlinear Simulation of Plasma Blob Formation and Radial Propagation in the Scrape-off Layer

The nonlinear fluid simulation of the isolated plasma blob propagation and interchange turbulence in the scrape-off layer are demonstrated using 2-dimensional Hasegawa-Wakatani equation.
Sugita, Satoru, 伊藤, 早苗, イトウ, サナエ, スギタ, サトル, 杉田, 暁, Yagi, Masatoshi, 矢木, 雅敏, Ito, Sanae-I., ヤギ, マサトシ   +8 more
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