Results 21 to 30 of about 70,052 (258)

ECRH scenarios with selective heating of trapped/passing electrons in the W7-X Stellarator

EPJ Web of Conferences, 2015
Using specific features of the magnetic equilibrium in the W7-X stellarator, the ECRH scenarios with combined X2 and X3 modes are discussed. The RF beams for operation with X2 and X3 modes need to be launched from low- and, via the remote steering ...
Marushchenko N.B., Beidler C.D., Erckmann V., Geiger J., Helander P., Laqua H.P, Maassberg H., Turkin Y.   +7 more
doaj   +1 more source

Self-consistent nonlinear kinetic simulations of the anomalous Doppler instability of suprathermal electrons in plasmas [PDF]

, 2013
Suprathermal tails in the distributions of electron velocities parallel to the magnetic field are found in many areas of plasma physics, from magnetic confinement fusion to solar system plasmas.
R. O. Dendy, Lai, W. N., Dendy, R. O., S. C. Chapman, W. N. Lai, Chapman, Sandra C.   +5 more
core   +1 more source

Recent Progress in ICRF Experiments on the Experimental Advanced Superconducting Tokamak (EAST) [PDF]

EPJ Web of Conferences
Ion Cyclotron Range of Frequency (ICRF) heating is a major auxiliary heating method used on the Experimental Advanced Superconducting Tokamak (EAST). This paper summarizes recent progress in ICRF experiments on EAST, including the upgrade of ICRF heating
Zhang Wei, Antar Ghassan, Cheng Yan, Deng Xu, Ju Songqing, Kazakov Yevgen, Liu Lunan, Mao Yuzhou, Ongena Jozef, Qin Chengming, Wang Lei, Wang Yongsheng, Wouters Tom, Yang Hua, Yuan Shuai, Zhang Kai, Zhang Xinjun   +16 more
doaj   +1 more source

Experimental Investigations of Magnetohydrodynamic Plasma Jets [PDF]

, 2009
This thesis primarily focuses on understanding the plasma behavior during the helicity injection stage of a pulsed spheromak experiment. Spheromak formation consists of a series of dynamic steps whereby highly localized plasma near the electrodes evolves
Kumar, Deepak
core   +1 more source

Runaway electron diagnostics for the COMPASS tokamak using EC emission [PDF]

EPJ Web of Conferences, 2019
An electron cyclotron emission (ECE) diagnostic of suprathermal electrons was utilised for runaway electron (RE) experiments purposes in the COMPASS tokamak.
Farnik Michal, Urban Jakub, Zajac Jaromir, Bogar Ondrej, Ficker Ondrej, Macusova Eva, Mlynar Jan, Cerovsky Jaroslav, Varavin Mikita, Weinzettl Vladimir, Hron Martin   +10 more
doaj   +1 more source

The role of rectified currents in far-field RF sheaths and in SOL losses of HHFW power on NSTX

Nuclear Materials and Energy, 2017
Radio-frequency (RF) rectification is an important sheath phenomenon for wave heating of plasma in fusion devices and is proposed to be the mechanism responsible for converting high-harmonic fast-wave (HHFW) power in the National Spherical Torus ...
R.J. Perkins, J.C. Hosea, M.A. Jaworski, R.E. Bell, N. Bertelli, G.J. Kramer, L. Roquemore, G. Taylor, J.R. Wilson   +8 more
doaj   +1 more source

First feedback-controlled divertor detachment in W7-X: Experience from TDU operation and prospects for operation with actively cooled divertor

Nuclear Materials and Energy, 2023
In the last experimental campaign (OP1.2b) of the stellarator Wendelstein 7-X (W7-X), boronisation as a mean for first wall conditioning was applied for the first time which led to strongly reduced impurity fluxes from plasma-facing components.
M. Krychowiak, R. König, T. Barbui, S. Brezinsek, J. Brunner, F. Effenberg, M. Endler, Y. Feng, E. Flom, Y. Gao, D. Gradic, P. Hacker, J.H. Harris, M. Hirsch, U. Höfel, M. Jakubowski, P. Kornejew, M. Otte, A. Pandey, T.S. Pedersen, A. Puig, F. Reimold, O. Schmitz, T. Schröder, V. Winters, D. Zhang   +25 more
doaj   +1 more source

Transport properties of disordered 2D complex plasma crystal

, 2018
In this work, we investigate numerically the transport properties of a 2D complex plasma crystal using diffusion of coplanar dust lattice waves. In the limit where the Hamiltonian interactions can be decoupled from the non-Hamiltonian effects, we ...
Busse, Kyle, Guyton, Forrest., Cameron, Adam., Matthews, Lorin Swint., Liaw, Constanze., Cameron, Adam, Busse, Kyle., Kostadinova, Eva Georgieva, 1992-, Hyde, Truell Wayne.   +8 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Designing a tokamak fusion reactor—How does plasma physics fit in?

, 2015
This paper attempts to bridge the gap between tokamak reactor design and plasma physics. The analysis demonstrates that the overall design of a tokamak fusion reactor is determined almost entirely by the constraints imposed by nuclear physics and fusion ...
Mangiarotti, Franco Julio, Minervini, Joseph V, Freidberg, Jeffrey P.   +2 more
core   +1 more source