Results 101 to 110 of about 1,964 (170)

Toroidal Alfvén eigenmodes excited by energetic electrons in EAST low-density ohmic plasmas

Nuclear Fusion
Operation in the quiescent regime with abundant trapped energetic electrons (EEs) has been achieved during the current flattop in EAST low-density Ohmic plasmas.
Xiang Zhu, Zhiyong Qiu, Jian Bao, Tao Zhang, Haiqing Liu, Chenxi Luo, Tian Tang, Tonghui Shi, Dalong Chen, Jinping Qian, Xiaodong Lin, Xiang Gao, Xianzu Gong, Shiyao Lin, Long Zeng   +14 more
doaj   +1 more source

Application of non-axisymmetric magnetic field for control of Alfvén eigenmodes in KSTAR

Nuclear Fusion
We report an experimental examination of non-axisymmetric (3D) magnetic fields for the control of Alfvén eigenmodes (AEs) in KSTAR. Application of the phase-sweeping n  = 1 3D magnetic field identifies the effective 3D field phase and threshold amplitude
Kimin Kim, Jisung Kang, Tongnyeol Rhee, Minho Kim, Junghee Kim   +4 more
doaj   +1 more source

First Results of the Implementation of the Doppler Backscattering Diagnostic for the Investigation of the Transition to H-Mode in the Spherical Tokamak Globus-M2. [PDF]

Sensors (Basel), 2023
Ponomarenko A, Yashin A, Kurskiev G, Minaev V, Petrov A, Petrov Y, Sakharov N, Zhiltsov N.   +7 more
europepmc   +1 more source

Simulations of vertical displacement oscillatory modes and global Alfvén Eigenmodes in JET geometry

Nuclear Fusion
Vertical Displacement Oscillatory Modes (VDOM), with frequency in the Alfvén range, are natural modes of oscillation of magnetically confined laboratory plasmas with elongated cross-section. These axisymmetric modes arise from the interaction between the
T. Barberis, C.C. Kim, F. Porcelli, D. Banerjee, N. Hawkes, Ye O. Kazakov, Y.Q. Liu, H.J.C. Oliver, S.E. Sharapov, A. Yolbarsop, NIMROD Team, JET Contributors   +11 more
doaj   +1 more source

Excitation of ULF, ELF, and VLF Resonator and Waveguide Oscillations in the Earth–Atmosphere–Ionosphere System by Lightning Current Sources Connected with Hunga Tonga Volcano Eruption

Atmosphere
The simulations presented here are based on the observational data of lightning electric currents associated with the eruption of the Hunga Tonga volcano in January 2022.
Yuriy G. Rapoport, Volodymyr V. Grimalsky, Andrzej Krankowski, Asen Grytsai, Sergei S. Petrishchevskii, Leszek Błaszkiewicz, Chieh-Hung Chen   +6 more
doaj   +1 more source

Simulations of cosmic ray propagation. [PDF]

Living Rev Comput Astrophys, 2021
Hanasz M, Strong AW, Girichidis P.
europepmc   +1 more source

Global particle-in-cell simulations of Alfvénic modes [PDF]

, 2008
Alexey Mishchenko, Axel Könies, Helander P., Kolesnichenko Ya. I., Lutsenko V., Rebut P. H., Roman Hatzky   +6 more
core   +2 more sources

Active control of Alfvén eigenmodes by external magnetic perturbations with different spatial spectra

Nuclear Fusion
Alfvén eigenmodes have been suppressed and excited in tokamak plasmas by (just) modifying the poloidal spectra of externally applied static magnetic perturbations.
J. Gonzalez-Martin, M. Garcia-Munoz, J. Galdon-Quiroga, Y. Todo, J. Dominguez-Palacios, M. Dunne, A. Jansen Van Vuuren, Y.Q. Liu, L. Sanchis-Sanchez, D. Spong, W. Suttrop, X. Wang, M. Willensdorfer, the ASDEX Upgrade Team, the MST1 Teams   +14 more
doaj   +1 more source

Transport and losses of energetic particles in tokamaks in the presence of Alfvén activity using the new full orbit TAPaS code coupled to FAR3d

Nuclear Fusion
Recent developments and tools integrated into the TAPaS code are presented, enabling realistic scenario simulations of particle dynamics within experimental tokamak magnetic equilibria.
H. Betar, D. Zarzoso, J. Varela, D. Del-Castillo-Negrete, L. Garcia, X. Du   +5 more
doaj   +1 more source

Magnetopause ripples going against the flow form azimuthally stationary surface waves. [PDF]

Nat Commun, 2021
Archer MO, Hartinger MD, Plaschke F, Southwood DJ, Rastaetter L.   +4 more
europepmc   +1 more source