Results 91 to 100 of about 1,964 (170)

Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges

Nuclear Fusion
A series of high-frequency ( $400\sim1000{\text{ kHz}}$ ) bursting core-localized Alfvén instabilities have been observed during ohmic discharges in EAST tokamak. The instability trigger favours the discharge conditions of low toroidal magnetic field and
P. Su, H. Lan, C. Zhou, J. Bao, A. Liu, X. Zhu, M. Wu, C. Luo, J. Han, J. Wang, H. Liu, T. Zhang, R. Zhou, S. Lin, H. Zhao, Y. Sun, Z. Qiu, N. Chu, T. Tang, Y. Tan, L. Zeng, Z. Gao   +21 more
doaj   +1 more source

Transverse oscillations and an energy source in a strongly magnetized sunspot. [PDF]

Nat Astron, 2023
Yuan D, Fu L, Cao W, Kuźma B, Geeraerts M, Trelles Arjona JC, Murawski K, Van Doorsselaere T, Srivastava AK, Miao Y, Feng S, Feng X, Noda CQ, Cobo BR, Su J.   +14 more
europepmc   +1 more source

Fast Ion-Driven MHD Instabilities and Consequent Fast Ion Losses in the Compact Helical System [PDF]

, 2006
Impacts of fast-ion-driven MHD modes on fast ion transport have been investigated in a medium size helical device CHS having negative magnetic shear over an entire region of plasma.
M. Isobe
core  

Perturbative model for the saturation of energetic-particle-driven modes limited by self-generated zonal modes

Nuclear Fusion
We present a simplified energy-conserving approach to incorporate wave–wave nonlinear effects within the framework commonly used to describe wave–particle nonlinearities.
T. Barberis, V.N. Duarte, E.J. Hartigan-O’Connor, N.N. Gorelenkov   +3 more
doaj   +1 more source

Exact Nonlinear Decomposition of Ideal-MHD Waves Using Eigenenergies. II. Fully Analytical Equations and Pseudoadvective Eigenenergies

The Astrophysical Journal
Physical insight into plasma evolution in the magnetohydrodynamic (MHD) limit can be revealed by decomposing the evolution according to the characteristic modes of the system. In this paper we explore aspects of the eigenenergy decomposition method (EEDM)
Axel Raboonik, David I. Pontin, Lucas A. Tarr   +2 more
doaj   +1 more source

Small-Scale Dynamic Aurora. [PDF]

Space Sci Rev, 2021
Kataoka R, Chaston CC, Knudsen D, Lynch KA, Lysak RL, Song Y, Rankin R, Murase K, Sakanoi T, Semeter J, Watanabe TH, Whiter D.   +11 more
europepmc   +1 more source

β-induced Alfvén eigenmodes and fishbone driven by energetic electrons in EAST electron heating dominant plasmas

Nuclear Fusion
β-induced Alfvén eigenmodes (e-BAE) and fishbone (e-fishbone) driven by the energetic electrons have been identified on the experimental advanced superconducting tokamak in electron cyclotron resonance heating (ECRH), low hybrid wave (LHW) together with ...
Y. Chao, L.Q. Xu, C.W. Mai, M.Q. Wu, Y.M. Duan, S.Y. Lin, K.N Geng, C. Zhou, L.Q. Hu   +8 more
doaj   +1 more source

Dayside Transient Phenomena and Their Impact on the Magnetosphere and Ionosphere. [PDF]

Space Sci Rev, 2022
Zhang H, Zong Q, Connor H, Delamere P, Facskó G, Han D, Hasegawa H, Kallio E, Kis Á, Le G, Lembège B, Lin Y, Liu T, Oksavik K, Omidi N, Otto A, Ren J, Shi Q, Sibeck D, Yao S.   +19 more
europepmc   +1 more source

Measurement of toroidal Alfvén eigenmode-driven fast-ion flows using an imaging neutral particle analyzer at ASDEX Upgrade

Nuclear Fusion
Alfvén Eigenmodes-driven fast-ion flows have been measured for the first time at the ASDEX Upgrade tokamak using an imaging neutral particle analyzer.
J. Rueda-Rueda, M. Garcia-Munoz, E. Viezzer, P.A. Schneider, J. Galdon-Quiroga, J. Garcia-Dominguez, P. Oyola, L. Velarde, J. Hidalgo-Salaverri, X. Du, M.A. Van Zeeland, M. Videla-Trevin, J. Gonzalez-Martin, Ph. Lauber, T. Lunt, A. Herrmann, J. Ayllon-Guerola, the ASDEX Upgrade Team   +17 more
doaj   +1 more source

Recent progress in the interaction between energetic particles and tearing modes. [PDF]

Natl Sci Rev, 2022
Cai H, Li D.
europepmc   +1 more source