Results 41 to 50 of about 8,079 (237)

Dynamics of recurrent modulational instability near its separatrix in nonlinear fiber optics

open access: yesResults in Physics, 2021
Separatrix crossing stands for the continuation of the modulation instability into the strong depleted regime and is responsible for the symmetry breaking nature of the recurrence phenomenon.
Xinlin Wang   +2 more
doaj   +1 more source

Type III Solar Radio Burst Source Region Splitting due to a Quasi-separatrix Layer [PDF]

open access: yes, 2017
We present low-frequency (80–240 MHz) radio imaging of type III solar radio bursts observed by the Murchison Widefield Array on 2015 September 21.
P. McCauley   +6 more
semanticscholar   +1 more source

Impacts of neon injection position and direction on toroidally asymmetric heat load distribution for EAST tokamak

open access: yesNuclear Materials and Energy, 2023
The impacts of neon injection positions and directions on the toroidally asymmetric heat load distributions on the divertor targets have been investigated for EAST tokamak by means of three-dimensional (3D) edge transport code EMC3-EIRENE. The heat loads
B. Liu   +7 more
doaj   +1 more source

Drift kinetic theory of neoclassical tearing modes in tokamak plasmas: polarisation current and its effect on magnetic island threshold physics

open access: yesNuclear Fusion, 2023
A nonlinear 4-dimensional drift island theory derived in (Imada et al 2019 Nucl. Fusion 59 046016 and references therein) provides qualitative predictions of the plasma response to a stationary neoclassical tearing mode (NTM) magnetic island in a low ...
A.V. Dudkovskaia   +6 more
doaj   +1 more source

Maximal width of the separatrix chaotic layer [PDF]

open access: yesPhysical Review E, 2009
18 pages, 16 figures, submitted to ...
Soskin S. M., MANNELLA, RICCARDO
openaire   +4 more sources

Evolution of flare ribbons, electric currents, and quasi-separatrix layers during an X-class flare [PDF]

open access: yes, 2016
Context. The standard model for eruptive flares has been extended to three dimensions (3D) in the past few years. This model predicts typical J -shaped photospheric footprints of the coronal current layer, forming at similar locations as the quasi ...
Miho Janvier   +8 more
semanticscholar   +1 more source

Engineering separatrix volume as a control technique for dynamical transitions [PDF]

open access: yesPhysical Review E, 2018
Dynamical transitions, such as a change from bound to unbound motion, often occur as post-adiabatic crossings of a time-dependent separatrix. Whether or not any given orbit will include such a crossing transition typically depends sensitively on initial ...
Timo Eichmann   +2 more
semanticscholar   +1 more source

Experimental characterization of recurrences and separatrix crossing in modulational instability.

open access: yesOptics Letters, 2019
We experimentally investigate two cycles of Fermi-Pasta-Ulam-Tsingou recurrence in optical fibers. Using three waves input, we characterize the distance of maximum compression points against the sideband amplitude and relative phase, outlining the ...
C. Naveau   +5 more
semanticscholar   +1 more source

Averaging method for systems with separatrix crossing [PDF]

open access: yes, 2017
The averaging method provides a powerful tool for studying evolution in near-integrable systems. The existence of separatrices in the phase space of the underlying integrable system is an obstacle for the application of standard results that justifies ...
A. Neishtadt
semanticscholar   +1 more source

Analytic equilibrium of “straight tokamak” plasma bounded by a magnetic separatrix

open access: yesPhysics of Plasmas, 2019
Theoretical and experimental considerations suggest that axisymmetric perturbations that are resonant at the X-point(s) of a magnetic divertor separatrix may play a role in the understanding of Edge Localized Modes in tokamak experiments and their active
F. Porcelli, A. Yolbarsop
semanticscholar   +1 more source

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