Results 1 to 10 of about 694,779 (119)

Stochastic Dynamics of Fusion Low-to-High Confinement Mode (L-H) Transition: Correlation and Causal Analyses Using Information Geometry [PDF]

Entropy, 2023
We investigate the stochastic dynamics of the prey–predator model of the Low-to-High confinement mode (L-H) transition in magnetically confined fusion plasmas. By considering stochastic noise in the turbulence and zonal flows as well as constant and time-
Eun-Jin Kim, Abhiram Anand Thiruthummal
doaj   +2 more sources

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

Manganese(II) Bromide Compound with Diprotonated 1-Hydroxy-2-(pyridin-2-yl)-4,5,6,7-tetrahydrobenzimidazole: Dual Emission and the Effect of Proton Transfers

Inorganics, 2022
An organic–inorganic cation–anion manganese(II) tetrabromide compound with diprotonated 1-hydroxy-2-(pyridin-2-yl)-4,5,6,7-tetrahydrobenzimidazole, [H3L][MnBr4][H2O], has been synthesized and investigated.
Alexey S. Berezin, Boris Selivanov, Andrey Danilenko, Aleksandr Sukhikh, Andrey Komarovskikh   +4 more
doaj   +1 more source

Limit-cycle-oscillation induced from the positive feedback amplification of radial electric field in the scrape-off-layer

Nuclear Fusion, 2023
Based on a heuristic model of the scrape-off-layer (SOL) plasma dynamics, a new type of limit-cycle-oscillation (LCO) is shown to be possible in the SOL region.
J.Y. Kim, H.S. Han, L. Jung
doaj   +1 more source

An Empirical Study on the Agglomeration Characteristics of China’s Construction Industry Based on Spatial Autocorrelation and Spatiotemporal Transition

Complexity, 2021
The spatiotemporal agglomeration of industries is the most prominent geographical feature of economic activities. Based on the analysis of the spatiotemporal distribution of China’s construction industry agglomeration, this paper analyzes the ...
Likun Zhao, Junsen Tian, Yanqi Liu, Rui Liu   +3 more
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Effects of postpartum milking strategy on plasma mineral concentrations and colostrum, transition milk, and milk yield and composition in multiparous dairy cows

Journal of Dairy Science, 2022
: The effects of postpartum milking strategy on plasma mineral concentrations, blood β-hydroxybutyrate (BHB) concentration, and colostrum, transition milk, and first monthly test milk yield and composition were evaluated in 90 multiparous Jersey and ...
A. Valldecabres, R.B. Lopes, A. Lago, C. Blanc, N. Silva-del-Río   +4 more
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L-H transition studies on MAST: power threshold and heat flux analysis

Nuclear Fusion, 2023
Spherical tokamaks are known to differ from conventional tokamaks in a number of physics areas, but our understanding is limited by a comparative lack of experimental data.
Lena Howlett, István Cziegler, Simon Freethy, Hendrik Meyer, the MAST team   +4 more
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Generalization of the Heuristic Drift SOL model for finite collisionality and effect on flow shearing rate vs. interchange growth rate

Nuclear Materials and Energy, 2021
We generalize the low-gas-puff Heuristic Drift (HD) model of the power scrape-off layer width to take into account both the enhanced parallel confinement time in the SOL at high collisionality, due to enhanced thermal resistivity, and the increase of the
A.O. Brown, R.J. Goldston
doaj   +1 more source

Time-dependent probability density functions and information geometry of the low-to-high confinement transition in fusion plasma

Physical Review Research, 2020
We report a study of time-dependent probability density functions (PDFs) in the low-to-high confinement mode (L-H) transition by extending the previous prey-predator-type model [E. Kim and P. H. Diamond, Phys. Rev. Lett.
Eun-jin Kim, Rainer Hollerbach
doaj   +1 more source

STUDY OF L–H TRANSITION AND PEDESTAL WIDTH BASED ON TWO-FIELD BIFURCATION AND FIXED POINT CONCEPTS

Acta Polytechnica, 2015
The L–H transition in magnetic confinement plasmas is investigated on the basis of concepts of two-field bifurcation and fixed-point stability. A set of heat and particle transport equations with both neoclassical and anomalous effects included is used ...
Boonyarit Chatthong, Thawatchai Onjun
doaj   +1 more source