Results 31 to 40 of about 8,079 (237)
Dynamical tunneling across the separatrix
Physical Review E, 2023 The strong enhancement of tunneling couplings typically observed in tunneling splittings in the quantum map is investigated. We show that the transition from instanton to noninstanton tunneling, which is known to occur in tunneling splittings in the space of the inverse Planck constant, takes place in a parameter space as well.
Yasutaka Hanada +2 more
openaire +3 more sources
Analysis and expansion of the quasi-continuous exhaust (QCE) regime in ASDEX Upgrade
Nuclear Fusion, 2023 The quasi-continuous exhaust (QCE) regime, formerly known as either type-II ELM or small ELM regime is studied in ASDEX Upgrade. The regime is a natural type-I ELM-free H-mode.
M. Faitsch +11 more
doaj +1 more source
Geophysical Research Letters, 2020 We report Magnetospheric Multiscale observations of large amplitude, parallel, electrostatic, proton plasma frequency waves on the magnetospheric side of the reconnecting magnetopause. The waves are often found in the magnetospheric separatrix region and
K. Steinvall +5 more
semanticscholar +1 more source
A NEW APPROACH TO THE TREATMENT OF SEPARATRIX CHAOS [PDF]
Fluctuation and Noise Letters, 2012 We review an approach to separatrix chaos that has allowed us to solve some significant problems by: (i) finding analytically the maximum width of the chaotic layer, a problem that lay unsolved for 40 years, and showing that the maximum may be much larger than had previously been assumed; (ii) describing the drastic facilitation of the onset of global
Soskin S. M. +4 more
openaire +3 more sources
Effect of Initial Conditions on the Behavior of Two-Electrode MEMS with Variable Interelectrode Gap [PDF]
Journal of Applied and Computational MechanicsThe influence of initial conditions on the behavior of two-electrode microelectromechanical systems (MEMS) having parallel-plate and comb structures with variable interelectrode gap is studied and analyzed here within a nonlinear approach.
Valery Dragunov +3 more
doaj +1 more source
On the ion distributions at the separatrices during symmetric magnetic reconnection
Earth and Planetary Physics, 2021 A particle-in-cell simulation of symmetric reconnection with zero guide field is carried out to understand the dynamics of ions along the separatrices. Through the investigation of ion velocity distributions at different moments and locations along the ...
HongTao Huang +4 more
doaj +1 more source
Whistler mode waves and Hall fields detected by MMS during a dayside magnetopause crossing
Geophysical Research Letters, 2016 We present Magnetospheric Multiscale (MMS) mission measurements during a full magnetopause crossing associated with an enhanced southward ion flow. A quasi‐steady magnetospheric whistler mode wave emission propagating toward the reconnection region with ...
O. Le Contel +38 more
doaj +1 more source
Nuclear Materials and Energy, 2023 Experimentally, it has been observed in high-confinement (H-Mode) plasmas with Edge Localised Modes (ELMs) on JET that the pressure pedestal (pe,ped) is degraded by approximately a factor of two when there is a change in electron separatrix density, ne ...
J. Simpson +12 more
doaj +1 more source
On the role of separatrix instabilities in heating the reconnection outflow region [PDF]
Physics of Plasmas, 2018 A study of the role of microinstabilities at the reconnection separatrix can play in heating the electrons during the transition from inflow to outflow is being presented.
M. Hesse +13 more
semanticscholar +1 more source
Nuclear Materials and Energy, 2019 Analytical expressions for the divertor radiation around the onset of detachment based on the divertor neutral pressure and the upstream separatrix density are tested against measurements on strongly nitrogen seeded high confinement mode (H-mode ...
A. Kallenbach +8 more
semanticscholar +1 more source