Results 101 to 110 of about 63,312 (284)

Discharge path-dependent bifurcation of plasma confinement on EAST

Nuclear Fusion
We report the first experimental observation of confinement state bifurcation in steady-state H-mode discharges sustained by lower hybrid wave (LHW) current drive and electron cyclotron resonance heating on the EAST superconducting tokamak.
N. Xiang, Y.H. Huang, Z.H. Qian, J.L. Chen, J.P. Qian, X.Z. Gong, Q. Zang, L.H. Ma, X.M. Zhai, G.S. Li, S.Q. Yang, G.L. Lin, H.L. Zhao, the EAST Team   +13 more
doaj   +1 more source

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

Advanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken, K. Ashoke Raman, Alexander Bauer, Violeta Karyofylli, Eva Jodat, André Karl, Rüdiger‐A. Eichel   +6 more
wiley   +1 more source

Stoma‐Shell Nanoarchitecture for Enhanced Plasma Confinement Catalysis in Synthesis of Ethanol from CO2

Advanced Functional Materials, EarlyView.
High‐energy electron impact in plasma catalysis often causes excessive dissociation of active intermediates, limiting C2+ product selectivity. To address this challenge, a bio‐inspired stoma‐shell nanoarchitecture is designed to decouple electron impact from catalytic reaction zones.
Nan Zou, Zhiliang Dong, Tsun‐Kong Sham, Xiaonian Li, Ying Zheng, Ting Qiu   +5 more
wiley   +1 more source

Observation of plasma performance improvement by edge ECRH power deposition on Experimental Advanced Superconducting Tokamak

Nuclear Fusion
Edge electron cyclotron current drive (ECCD) has been observed to enhance plasma performance on the Experimental Advanced Superconducting Tokamak. By adjusting the ECCD mirror, the power deposition was shifted from the core to the edge region during H ...
Y.L. Li, G.S. Xu, G.S. Li, Y.Q. Chu, H.L. Zhao, N. Yan, Y.F. Wang, X.L. Zou, Q. Zang, T. Zhang, W.M. Zhang, Z. Zhou, K.X. Ye, W.Y. Xu, D.A. Lu, S.Y. Fu, Z.C. Lin, L.Q. Xu, R. Chen, X.L. Li, R. Ding, L. Wang, Q.Q. Yang, S.X. Wang, Y.M. Duan, L. Zhang, H.Q. Liu, X.Z. Gong, J.S. Hu, Y.T. Song, B.N. Wan, the EAST Team   +31 more
doaj   +1 more source

Suppression of tungsten accumulation during ELMy H-mode by lower hybrid wave heating in the EAST tokamak

Nuclear Materials and Energy, 2017
EAST tokamak has been equipped with upper tungsten divertor since 2014. The tungsten accumulation has been often observed in NBI-heated H-mode discharges suggesting deleterious tungsten confinement in the plasma core.
L. Zhang, S. Morita, Z. Xu, P.F. Zhang, Q. Zang, Y.M. Duan, H.Q. Liu, H.L. Zhao, F. Ding, T. Ohishi, W. Gao, J. Huang, X.D. Yang, Y.J. Chen, Z.W. Wu, P. Xu, B.J. Ding, C.D. Hu, X.Z. Gong, J.L. Chen, L.Q. Hu   +20 more
doaj   +1 more source

Understanding the effect resonant magnetic perturbations have on ELMs

, 2013
All current estimations of the energy released by type I ELMs indicate that, in order to ensure an adequate lifetime of the divertor targets on ITER, a mechanism is required to decrease the amount of energy released by an ELM, or to eliminate ELMs ...
Chapman, I. T., Evans, T. E., Ham, C., Harrison, J. R., Huijsmans, G., Kirk, A., Liang, Y., Liu, Y. Q., Loarte, A., Suttrop, W., Thornton, A. J.   +10 more
core   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Photoconductivity‐Driven Quantum Efficiency Gain in Inorganic Ruddlesden‐Popper Layered Cs2PbBr2I2 Perovskite Photodetector for Visible Light Detection

Advanced Functional Materials, EarlyView.
Rational halogen mixing strategy was employed to shift the bandgap of Cs2PbBr2I2 from ultraviolet to visible region, enabling first realization of a visible‐light photodetector with this 2D layered Ruddlesden‐Popper perovskite material. Under illumination, light‐induced internal field forms and drives trap‐mediated persistent photoconductivity ...
Md Fahim Al Fattah, Asif Abdullah Khan, Saikiran Khamgaonkar, Majid Haji Bagheri, Danyah Khan, Md Rasidul Islam, Mahmoud Almadoun, Aixi Pan, Alexander Li, Marwa Abd‐Ellah, Vivek Maheshwari, Dayan Ban   +11 more
wiley   +1 more source

Evolution of energy confinement physics and most probable compact ignition test device in magnetic fusion

AAPPS Bulletin
The variation of edge confinement modes such as L-mode, H-mode, QH-mode, and I-mode and transitions between these modes in toroidal devices is attributed to interplay between turbulent inflow plasmas from divertor and outflow plasmas from the edge in ...
Hyeon K. Park
doaj   +1 more source

Strong ExB shear flows in the pedestal region in H-mode plasma

, 2006
We report the first experimental observation of stationary zonal flows in the pedestal region of the H-mode plasma in the H-1 toroidal heliac. Strong peaks in E_r shear mark the top and foot of the density pedestal.
A. M. Balk, H. Punzmann, H. Xia, M. G. Shats, S. M. Hamberger   +4 more
core   +1 more source