Results 11 to 20 of about 4,141,636 (301)

L-H transition in tokamaks and stellarators [PDF]

open access: yesPlasma Physics and Controlled Fusion, 1994
H-mode theory is extended to include realistic effects such as charge-exchange momentum loss associated with neutral particles, and the magnetic stresses induced by the magnetic islands. Local critical plasma parameters for the on-set of the bifurcation are obtained and can be compared quantatively with experimental measurements.
Shaing, K. C.   +2 more
openaire   +1 more source

Simulation of transition dynamics to high confinement in fusion plasmas [PDF]

open access: yes, 2014
The transition dynamics from the low (L) to the high (H) confinement mode in magnetically confined plasmas is investigated using a first-principles four-field fluid model.
Madsen, J.   +5 more
core   +2 more sources

Generalization of the Heuristic Drift SOL model for finite collisionality and effect on flow shearing rate vs. interchange growth rate

open access: yesNuclear 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

Dyson Hierarchical Long-Ranged Quantum Spin-Glass via real-space renormalization [PDF]

open access: yes, 2015
We consider the Dyson hierarchical version of the quantum Spin-Glass with random Gaussian couplings characterized by the power-law decaying variance $\overline{J^2(r)} \propto r^{-2\sigma}$ and a uniform transverse field $h$.
Monthus, Cecile
core   +3 more sources

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

open access: yesPhysical 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

I-mode studies at ASDEX Upgrade: L-I and I-H transitions, pedestal and confinement properties [PDF]

open access: yes, 2016
The I-mode is a plasma regime obtained when the usual L-H power threshold is high, e.g. with unfavourable ion B ∇ direction. It is characterised by the development of a temperature pedestal while the density remains roughly as in the L-mode ...
Barrera Orte, L.   +15 more
core   +1 more source

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

open access: yesActa 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

Discovery of Four High Proper Motion L Dwarfs, Including a 10 pc L Dwarf at the L/T Transition [PDF]

open access: yes, 2013
We discover four high proper motion L dwarfs by comparing the Wide-field Infrared Survey Explorer (WISE) to the Two Micron All Sky Survey (2MASS). WISE J140533.32+835030.5 is an L dwarf at the L/T transition with a proper motion of 0.85+/-0.02" yr^-1 ...
Castro, Philip J.   +7 more
core   +2 more sources

Transverse and lateral confinement effects on the oscillations of a free cylinder in a viscous flow [PDF]

open access: yes, 2013
The different types of instabilities of free cylinders (diameter $D$, length $L$) have been studied in a viscous flow (velocity $U$) between parallel vertical walls of horizontal width $W$ at a distance $H$: the influence of the confinement parameters $D/
Auradou, Harold   +4 more
core   +4 more sources

Origin and pathogenesis of nodular lymphocyte–predominant Hodgkin lymphoma as revealed by global gene expression analysis [PDF]

open access: yes, 2008
The pathogenesis of nodular lymphocyte–predominant Hodgkin lymphoma (NLPHL) and its relationship to other lymphomas are largely unknown. This is partly because of the technical challenge of analyzing its rare neoplastic lymphocytic and histiocytic (L&H ...
Brune, Verena   +12 more
core   +1 more source

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