Results 51 to 60 of about 63,718 (300)

Characterization of density scanning experiments with NBI and LHW on EAST

AIP Advances, 2021
This paper presents the results of the density scanning experiment on the 2018 EAST campaign to study the effect of gas fueling on energy confinement of the ELMy H-mode.
Fubin Zhong, Tao Zhang, Yao Yang, Fei Wen, Mingfu Wu, Jia Huang, Xuexi Zhang, Xiaohe Wu, Gongshun Li, Kangning Geng, Yukai Liu, Haoming Xiang, Kaixuan Ye, Xiang Han, Xiang Gao   +14 more
doaj   +1 more source

Edge radial electric field structure and its connections to H-mode confinement in Alcator C-Mod plasmas [PDF]

Physics of Plasmas, 2009
High-resolution charge-exchange recombination spectroscopic measurements of B5+ ions have enabled the first spatially resolved calculations of the radial electric field (Er) in the Alcator C-Mod pedestal region [E. S. Marmar, Fusion Sci. Technol. 51, 261 (2006)].
Lipschultz, Bruce, McDermott, R. M., Catto, Peter J., Granetz, Robert S., Greenwald, Martin J., Labombard, Brian, Marr, K., Rice, John E., Alcator C-Mod Team, Reinke, Matthew Logan, Hutchinson, Ian Horner, Hughes Jr, Jerry, Hubbard, Amanda E, Whyte, Dennis G   +13 more
openaire   +2 more sources

Cutaneous Melanoma Drives Metabolic Changes in the Aged Bone Marrow Immune Microenvironment

Aging and Cancer, EarlyView.
Melanoma, the deadliest form of skin cancer, increasingly affects older adults. Our study reveals that melanoma induces changes in iron and lipid levels in the bone marrow, impacting immune cell populations and increasing susceptibility to ferroptosis.
Alexis E. Carey, Murilo Ramos Rocha, Cheyenne Palm, Vania Wang, Denys Balandin, Ethan Black, Kevin Y. Zhang, Fan Huang, Daniel J. Zabransky, Yash Chhabra, Mareike Peters, Gabriel Ghiaur, Ashani Weeraratna   +12 more
wiley   +1 more source

On the origin of the DIII-D L-H power threshold isotope effect

Nuclear Fusion, 2023
The increased low to high confinement mode (L to H-mode) power threshold $P_\mathrm{LH}$ in DIII-D low collisionality hydrogen plasmas (compared to deuterium) is shown to result from lower impurity (carbon) content, consistent with reduced (mass ...
K.J. Callahan, L. Schmitz, T.A. Carter, E.A. Belli, C. Chrystal, S.R. Haskey, B.A. Grierson, K.E. Thome, S.P. Smith, G.R. McKee, G.M. Staebler, C. Holland, A. Ashourvan, Z. Yan   +13 more
doaj   +1 more source

L-H transition dynamics in fluid turbulence simulations with neoclassical force balance [PDF]

, 2013
Spontaneous transport barrier generation at the edge of a magnetically confined plasma is investigated. To this end, a model of electrostatic turbulence in three-dimensional geometry is extended to account for the impact of friction between trapped and ...
C. Bourdelle, G. Fuhr, Helander P., L. Chôné, P. Beyer, S. Benkadda, Y. Sarazin   +6 more
core   +5 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Impact of nitrogen seeding on L–H transitions and their role for detachment in ASDEX Upgrade

Nuclear Fusion
The required heating power, $P_{\mathrm{LH}}$ , to access the high confinement regime (H-mode) in nitrogen seeded deuterium plasmas is investigated at the ASDEX Upgrade tokamak. It is shown that a stepwise increase of the nitrogen seeding level increases
G. Birkenmeier, M. Bernert, D. Brida, P. David, R. Fischer, T. Happel, B. Kurzan, T. Lunt, F. Ryter, E. Wolfrum, the ASDEX Upgrade Team   +10 more
doaj   +1 more source

Edge radiated temperature fluctuations across confinement regime transitions in favorable and unfavorable drift configurations at ASDEX Upgrade

Nuclear Fusion, 2023
The physics behind the difference in heating power threshold for the low to high confinement (L–H) transition between favorable ion $B \times \nabla B$ drift (toward active X -point) and unfavorable ion $B \times \nabla B$ drift (away from active X ...
R. Bielajew, U. Plank, G.D. Conway, A.E. Hubbard, P. Rodriguez-Fernandez, B. Vanovac, C. Yoo, A.E. White, the ASDEX Upgrade Team   +8 more
doaj   +1 more source

Wave mode coupling due to plasma wakes in two-dimensional plasma crystals: In-depth view

, 2011
Experiments with two-dimensional (2D) plasma crystals are usually carried out in rf plasma sheaths, where the interparticle interactions are modified due to the presence of plasma wakes.
Couëdel, L., Ivlev, A. V., Morfill, G. E., Nosenko, V., Thomas, H. M., Zhdanov, S. K.   +5 more
core   +1 more source

Observation of confined current ribbon in JET plasmas [PDF]

, 2009
we report the identification of a localised current structure inside the JET plasma. It is a field aligned closed helical ribbon, carrying current in the same direction as the background current profile (co-current), rotating toroidally with the ion ...
A. Boboc, A. Huber, A. Korotkov, A. Lopez-Fraguas, A. Sirinelli, B. Alper, C. Giroud, C. Walén, C. Walén, D. Harting, D. Howell, D. Zarzoso, E. de la Luna, E. R. Solano, E. Rachlew, F. Rimini, G. Arnoux, G. Kocsis, G. S. Xu, H. Alfvén, H. Thomsen, K. Crombe, Kristian Birkeland, L. Barrera, L. Zabeo, M. Brix, M. F. F. Nave, M. N. A. Beurskens, P. Belo, P. J. Lomas, P. J. Lomas, S. D. Pinches, S. Devaux, S. Gerasimov, S. Saarelma, T. Eich, V. I. Petviashvili, Y. Andrew   +37 more
core   +3 more sources