title: Bifurcation and hysteresis of plasma edge transport in a flux-driven system.
abstract: Transition dynamics and mean shear flow generation in plasma interchange turbulence are explored in a flux-driven system that resembles the plasma edge region. The nonlinear evolution of the interchange mode shows two confinement regimes with different transport levels. Large amplitude oscillations in the phase space of turbulence intensity and mean flow energy are observed and investigated. Both clockwise and counterclockwise oscillations occur during the transition between the two regimes. The Reynolds stress gradients are shown to play a critical role in the generation of mean sheared flows in the edge region. Both the forward and back transitions are simulated self-consistently and a significant hysteresis is found.
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: B
authors.initials: B
authors.lastname: Li
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: X Y
authors.initials: XY
authors.lastname: Wang
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: C K
authors.initials: CK
authors.lastname: Sun
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: A
authors.initials: A
authors.lastname: Zhou
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: D
authors.initials: D
authors.lastname: Liu
authors.affiliation: Fusion Simulation Center, State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
authors.forename: C H
authors.initials: CH
authors.lastname: Ma
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: X G
authors.initials: XG
authors.lastname: Wang