Results 11 to 20 of about 1,103,850 (332)

Evidence and modeling of turbulence bifurcation in L-mode confinement transitions on Alcator C-Mod [PDF]

, 2020
© 2020 Author(s). Analysis and modeling of rotation reversal hysteresis experiments show that a single turbulent bifurcation is responsible for the Linear to Saturated Ohmic Confinement (LOC/SOC) transition and concomitant intrinsic rotation reversal on ...
Cao, NM, Chilenski, MA, Diamond, PH, Ennever, PC, Hughes, JW, Irby, J, Reinke, ML, Rice, JE, Rodriguez-Fernandez, P, Team, Alcator C-Mod, White, AE   +10 more
core   +2 more sources

SOLPS-ITER validation with TCV L-mode discharges

Physics of Plasmas, 2021
This work presents a quantitative test of SOLPS-ITER simulations against tokamak à configuration variable (TCV) L-mode experiments. These simulations account for drifts, currents, kinetic neutrals, and carbon impurities providing the most complete edge transport simulations for TCV to date.
Wensing, M., Reimerdes, H., Février, O., Colandrea, C., Martinelli, L., Verhaegh, K., Bagnato, F., Blanchard, P., Vincent, B., Perek, A., Gorno, S., de Oliveira, H., Theiler, C., Duval, B.P., Tsui, C.K., Baquero-Ruiz, M., Wischmeier, M., TCV team,, Team, MST1   +18 more
openaire   +1 more source

SOLPS-ITER modeling of ASDEX Upgrade L-mode detachment states

Plasma Physics and Controlled Fusion, 2021
Abstract SOLPS-ITER is used to model ASDEX Upgrade L-mode detachment states including the onset of detachment, the fluctuating detachment, and the complete detachment states, considering drifts and mimicking filamentary convective transport with a radial outward velocity in the low field side.
H Wu, F Subba, M Wischmeier, M Cavedon, R Zanino   +4 more
openaire   +4 more sources

Separatrix parameters and core performances across the WEST L-mode database

Nuclear Fusion, 2023
Abstract WEST database analysis shows a correlation of the recycled neutral source around the separatrix with core performances. This observation questions the causality chain between particle source and turbulent transport up to the core in L-mode, high recycling plasmas, an unavoidable phase of all scenarios. The best core performances
C. Bourdelle, J. Morales, J.F. Artaud, O. Grover, T. Radenac, J. Bucalossi, Y. Camenen, G. Ciraolo, F. Clairet, R. Dumont, N. Fedorczak, J. Gaspar, C. Gil, M. Goniche, C. Guillemaut, J. Gunn, P. Maget, P. Manas, V. Ostuni, B. Pégourié, Y. Peysson, P. Tamain, L. Vermare, D. Vézinet, the WEST Team   +24 more
openaire   +3 more sources

Scattering of guided waves propagating through pipe bends based on normal mode expansion

Scientific Reports, 2022
The scattering of guided waves propagating through pipe bends is studied by means of normal mode expansion. First, the bi-orthogonality relationship for normal modes in pipe bends is derived, based on which the displacement and stress fields at the ...
Wenjun Wu, Hao Dong, Shangyu Zhang
doaj   +1 more source

Theory of pseudoclassical confinement and transition to L mode [PDF]

Theory of pseudoclassical confinement and transition to L mode
"A theory of the self-sustained turbulence is developed for resistive plasma in toroidal devices. Pseudoclassical confinement is obtained in the low-temperature limit. As temperature increases, the current diffusivity prevails upon resistivity, and the turbulence nature changes so as to recover the L-mode transport.
A. Fukuyama, K. Itoh, M. Azumi, M. Yagi, S.-I. Itoh   +4 more
openaire   +1 more source

Electron heat transport in shaped TCV L-mode plasmas [PDF]

Plasma Physics and Controlled Fusion, 2005
Electron heat transport experiments are performed in L-mode discharges at various plasma triangularities, using radially localized electron cyclotron heating to vary independently both the electron temperature T-e and the normalized electron temperature gradient R/L-Te over a large range.
Camenen, Y., Pochelon, A., Bottino, A., Coda, S., Ryter, F., Sauter, O., Behn, R., Goodman, T. P., Henderson, M. A., Karpushov, A., Porte, L., Zhuang, G.   +11 more
openaire   +5 more sources

Entropy in Black Hole Pair Production [PDF]

, 1993
Pair production of Reissner-Nordstrom black holes in a magnetic field can be described by a euclidean instanton. It is shown that the instanton amplitude contains an explicit factor of $e^{A/4}$, where $A$ is the area of the event horizon.
Andrew Strominger, D. Brill, D. Garfinkle, David Garfinkle, F. J. Ernst, G. W. Gibbons, G. W. Gibbons, I. K. Affleck, I. K. Affleck, J. A. Harvey, J. D. Bekenstein, J. D. Bekenstein, K. Lee, K. Lee, M. A. Melvin, M. Srednicki, R. M. Wald, S. B. Giddings, S. B. Giddings, S. B. Giddings, S. B. Giddings, S. W. Hawking, Steven B. Giddings, T. Banks, T. Banks   +24 more
core   +2 more sources

Designing a VH-mode core/L-mode edge discharge [PDF]

Plasma Physics and Controlled Fusion, 1996
An operating mode with a very high confinement core like the VH-mode but a very low power flow to the divertor plates and low edge particle confinement like an L-mode would be beneficial. For a large tokamak like the proposed ITER, the power density at the separatrix is not that far above the scaled H-mode power threshold so not much of the power can ...
G M Staebler, F L Hinton, J C Wiley
openaire   +3 more sources

Mode Conversion Behavior of Guided Wave in a Pipe Inspection System Based on a Long Waveguide

Sensors, 2016
To make clear the mode conversion behavior of S0-mode lamb wave and SH0-plate wave converting to the longitudinal mode guided wave and torsional mode guided wave in a pipe, respectively, the experiments were performed based on a previous built pipe ...
Feiran Sun, Zhenguo Sun, Qiang Chen, Riichi Murayama, Hideo Nishino   +4 more
doaj   +1 more source