Results 11 to 20 of about 266,197 (292)

Edge localized mode control with an edge resonant magnetic perturbation [PDF]

Physics of Plasmas, 2005
A low amplitude (δbr∕BT=1 part in 5000) edge resonant magnetic field perturbation with toroidal mode number n=3 and poloidal mode numbers between 8 and 15 has been used to suppress most large type I edge localized modes (ELMs) without degrading core plasma confinement. ELMs have been suppressed for periods of up to 8.6 energy confinement times when the
Moyer, R. A, Evans, T. E, Osborne, T. H, Thomas, P. R, Becoulet, M., Harris, J., Finken, K.-H, Boedo, J. A, Doyle, E. J, Fenstermacher, M. E, Gohil, P., Groebner, R. J, Groth, M., Jackson, G. L, La Haye, R. J, Lasnier, C. J, Leonard, A. W, McKee, G. R, Reimerdes, H., Rhodes, T. L, Rudakov, D. L, Schaffer, M. J, Snyder, P. B, Wade, M. R, Wang, G., Watkins, J. G, West, W. P, Zeng, L.   +27 more
openaire   +3 more sources

Self-trapping and stable localized modes in nonlinear photonic crystals [PDF]

, 2001
We predict the existence of stable nonlinear localized modes near the band edge of a two-dimensional reduced-symmetry photonic crystal with a Kerr nonlinearity.
A. A. Helmy, A. A. Maradudin, A. De Rossi, A. J. Sievers, A. J. Ward, A. R. McGurn, B. I. Swanson, C. M. Anderson, C. M. Anderson, C. M. de Sterke, D. N. Christodoulides, E. Trias, E. W. Laedke, E. W. Laedke, H. S. Eisenberg, I. V. Barashenkov, J. D. Joannoupoulos, K. Busch, M. Scalora, N. Aközbek, P. Binder, P. L. Christiansen, P. Millar, P. Tran, S. F. Mingaleev, S. Flach, S. Flach, S. John, S. Shoji, Serge F. Mingaleev, U. T. Schwarz, V. K. Mezentsev, V. N. Astratov, W. Chen, Yu. B. Gaididei, Yu. S. Kivshar, Yuri S. Kivshar   +36 more
core   +3 more sources

Access to stable, high pressure tokamak pedestals using local electron cyclotron current drive

Nuclear Fusion, 2023
Experiments on the DIII-D tokamak demonstrate that edge localized mode (ELM) stability can be manipulated using localized electron cyclotron current drive (ECCD) in conjunction with resonant magnetic perturbations (RMPs).
N.C. Logan, B.C. Lyons, M. Knolker, Q. Hu, T. Cote, P. Snyder   +5 more
doaj   +1 more source

Edge Localized Modes in Tokamaks [PDF]

Fusion Science and Technology, 2008
As one increases the heating power in a tokamak beyond a threshold, the confinement undergoes a bifurcation, with a dramatic increase in the confinement time by a factor ˜2.
openaire   +2 more sources

Inter-ELM pedestal localized fluctuations in tokamaks: Summary of multi-machine observations

Nuclear Materials and Energy, 2019
A variety of experimental studies on pedestal localized fluctuations appearing in between crashes of edge localized modes (ELMs) across several tokamaks have been reviewed and summarized.
F.M. Laggner, A. Diallo, M. Cavedon, E. Kolemen   +3 more
doaj   +1 more source

Statistical translation invariance protects a topological insulator from interactions [PDF]

, 2015
We investigate the effect of interactions on the stability of a disordered, two-dimensional topological insulator realized as an array of nanowires or chains of magnetic atoms on a superconducting substrate.
Beenakker, C. W. J., Cobanera, E., Fulga, I. C., Milsted, A., Seabra, L.   +4 more
core   +3 more sources

TEM analysis of recrystallized double forged tungsten after exposure in JUDITH 1 and JUDITH 2

Nuclear Materials and Energy, 2016
Five samples of recrystallized pure tungsten were exposed to transient heat loads using the electron beam of the JUDITH 1 and JUDITH 2 installations of Forschungszentrum Jülich.
W. Van Renterghem, I. Uytdenhouwen, Th. Loewenhoff, M. Wirtz   +3 more
doaj   +1 more source

Wall conditioning and ELM mitigation with boron nitride powder injection in KSTAR

Nuclear Materials and Energy, 2021
Results from KSTAR powder injection experiments, in which tens of milligrams of boron nitride (BN) were dropped into low-power H-mode plasmas, show an improvement in wall conditions in subsequent discharges and, in some cases, a reduction or elimination ...
E.P. Gilson, H.H. Lee, A. Bortolon, W. Choe, A. Diallo, S.H. Hong, H.M. Lee, J. Lee, R. Maingi, D.K. Mansfield, A. Nagy, S.H. Park, I.W. Song, J.I. Song, S.W. Yun, S.W. Yoon, R. Nazikian   +16 more
doaj   +1 more source

Wide edge state supercontinuum in a Floquet–Lieb topological photonic insulator

APL Photonics, 2023
Conventional topological photonic insulators typically have narrow nontrivial band gaps truncated by broad dispersive bulk bands, resulting in limited edge mode transmission bandwidths that can be exploited for potential applications.
Hanfa Song, Tyler J. Zimmerling, Bo Leng, Vien Van   +3 more
doaj   +1 more source

Homogenized description of defect modes in periodic structures with localized defects [PDF]

, 2014
A spatially localized initial condition for an energy-conserving wave equation with periodic coefficients disperses (spatially spreads) and decays in amplitude as time advances. This dispersion is associated with the continuous spectrum of the underlying
Duchêne, Vincent, Vukićević, Iva, Weinstein, Michael I.   +2 more
core   +3 more sources