Results 1 to 10 of about 2,229 (260)

Enhanced sensitivity in nonlinear parity-time symmetric silicon micromechanical resonators [PDF]

Microsystems & Nanoengineering
Silicon resonant sensors are essential to a wide range of applications that involve the detection of pressure, acceleration, and magnetic fields.
Yu-Jue Xie, Li-Feng Wang, Man-Na Zhang, Rui Wang, Qing-An Huang   +4 more
doaj   +2 more sources

LC Resonant-Based Method for Permeability Interference Suppression in Magnetized Pipeline Eddy Current Testing [PDF]

Sensors
In the eddy current testing (ECT) of magnetized ferromagnetic pipelines, permeability perturbations near defects cause magnetic distortion that primarily modulates the imaginary part of the ECT sensor’s impedance, leading to confusion between inner and ...
Lin Su, Yuxuan Li, Tong Cao, Shengping Li, Jie Zhang   +4 more
doaj   +2 more sources

Effect of resonant magnetic perturbations on particle confinement [PDF]

Nuclear Fusion, 2009
The effect of externally applied resonant magnetic perturbations (RMPs) on plasma particle transport is investigated based on two fluid equations. It is found that, depending on the frequency and direction of plasma rotation, the RMP of a moderate amplitude can either increase or decrease the plasma density gradient around the corresponding rational ...
Qingquan Yu
exaly   +4 more sources

Control of Transport-Barrier Relaxations by Resonant Magnetic Perturbations

Physical Review Letters, 2009
Transport-barrier relaxation oscillations in the presence of resonant magnetic perturbations are investigated using three-dimensional global fluid turbulence simulations from first principles at the edge of a tokamak. It is shown that resonant magnetic perturbations have a stabilizing effect on these relaxation oscillations and that this effect is due ...
Xavier Garbet, M Leconte, P Beyer
exaly   +5 more sources

Taming harmful bursts and heat flux in high-confinement tokamak plasmas [PDF]

Nature Communications
A major challenge in tokamak fusion research is first-wall erosion caused by steady heat loads and sudden energy bursts known as edge-localized modes. Divertor detachment reduces steady-state heat flux, while resonant magnetic perturbations can suppress ...
Q. M. Hu, H. Q. Wang, M. Navarro, H. H. Wang, D. Eldon, S. Gu, X. X. Ma, H. Frerichs, F. Scotti, L. Wang, R. S. Wilcox, T. M. Wilks, A. Bortolon, L. Ceelen, F. Effenberg, X. Z. Gong, M. N. Jia, S. K. Kim, C. J. Lasnier, A. W. Leonard, K. D. Li, N. C. Logan, Q. Ma, R. Maingi, L. Y. Meng, A. L. Moser, T. H. Osborne, C. Paz-Soldan, M. W. Shafer, Y. W. Sun, S. M. Yang, C. Ye   +31 more
doaj   +2 more sources

Observation of stationary filaments with resonant magnetic perturbations in NSTX

Nuclear Fusion
The application of resonant magnetic perturbations (RMPs) induces striated heat fluxes on the divertor plate in tokamaks. These striated heat fluxes were previously considered strike point splitting by the intersection between the divertor and predicted ...
K.F. Gan, E.D. Fredrickson, J.W. Berkery, S. Munaretto, A. Kleiner, M. Lampert, J.-K. Park, R. Maingi, A.G. McLean, T.K. Gray, B.D. Wirth   +10 more
doaj   +2 more sources

Pedestal collapse by resonant magnetic perturbations

Nuclear Fusion, 2021
Abstract Pedestal collapse (i.e., the complete loss of the edge transport barrier (ETB)) in DIII-D H-mode plasmas occurs when resonant magnetic perturbations (RMPs) penetrate the steep gradient region at the plasma edge. Normally, RMP driven magnetic islands can occur at the top and bottom of the H-mode pedestal and these islands ...
R. Nazikian, Q. Hu, A. Ashourvan, D. Eldon, T.E. Evans, B.A. Grierson, N.C. Logan, D.M. Orlov, J.-K. Park, C. Paz-Soldan, F.M. Poli, Q. Yu   +11 more
openaire   +3 more sources

Plasma turbulence simulations in a diverted tokamak with applied resonant magnetic perturbations

Nuclear Fusion, 2023
The first results of three-dimensional, flux-driven, electrostatic, global, two-fluid turbulence simulations of a diverted tokamak configuration with applied resonant magnetic perturbations generated by a set of saddle coils are presented.
T. Boinnard, A.J. Coelho, J. Loizu, P. Ricci   +3 more
doaj   +1 more source

Direct effects of the resonant magnetic perturbation on turbulent transport [PDF]

Nuclear Fusion, 2016
Abstract The effects of the resonant magnetic perturbations (RMPs) on the turbulent transport are analyzed in the framework of the test particle approach using a semi-analytical method. The model includes particle collisions. The influence of the RMPs on plasma confinement is determined as function turbulence parameters and of ...
Vlad, Madalina, Spineanu, Florin
openaire   +2 more sources

Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Nuclear Fusion, 2023
The spectrum effects on toroidal rotation braking, induced by n  = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak.
H. Sheng, Y.W. Sun, X.Y. Li, H.H. Li, X.M. Wu, Y.Y. Li, S.F. Mao, Q. Ma, Y.Q. Liu, C. Ye, X.T. Yan, P.C. Xie, Q. Zang, H.H. Wang, M.N. Jia, M.Y. Ye, the EAST Team   +16 more
doaj   +1 more source