Results 11 to 20 of about 23,746 (299)

Resistive stability of a plasma with runaway electrons [PDF]

Physics of Plasmas, 2007
In tokamak disruptions the Ohmic current is often replaced by a current of runaway electrons, which is likely to be more peaked in the center of the discharge than the predisruption current. This raises the question of the resistive stability of the postdisruption plasma, where the equilibrium current is entirely carried by the runaway electrons while ...
P. HELANDER, D. GRASSO, R. J. HASTIE, PERONA, ANNA   +3 more
openaire   +4 more sources

Experimental Runaway Electron Current Estimation in COMPASS Tokamak

Atoms, 2019
Runaway electrons present a potential threat to the safe operation of future nuclear fusion large facilities based on the tokamak principle (e.g., ITER).
Milos Vlainic, Ondrej Ficker, Jan Mlynar, Eva Macusova, the COMPASS Tokamak Team   +4 more
doaj   +1 more source

Observation of relativistic runaway electrons with a wide-angle infrared periscope system in HL-2A [PDF]

AIP Advances
To gauge synchrotron radiation from relativistic runaway electrons during plasma disruptions, a novel wide-angle infrared periscope system has been installed and commissioned on the HL-2A tokamak.
Z. K. Wang, J. M. Gao, Q. Y. Tan, Y. B. Dong, Y. Liu, Y. P. Zhang, C. Y. Chen, W. Li, X. Q. Ji   +8 more
doaj   +1 more source

Consistency of a Causal Theory of Radiative Reaction with the Optical Theorem [PDF]

, 2011
The Abraham-Lorentz-Dirac equation for a point electron, while suffering from runaway solutions and an acausal response to external forces, is compatible with the optical theorem.
F. Intravaia, G. W. Ford, J. D. Jackson, L. D. Landau, L. D. Landau, P. W. Milonni, R. Behunin, R. F. O’Connell   +7 more
core   +3 more sources

Runaway electron generation and control [PDF]

Plasma Physics and Controlled Fusion, 2016
We present an overview of FTU experiments on runaway electron (RE) generation and control carried out through a comprehensive set of real-time (RT) diagnostics/control systems and newly installed RE diagnostics. An RE imaging spectrometer system detects visible and infrared synchrotron radiation. A Cherenkov probe measures RE escaping the plasma.
Esposito, B., Boncagni, L., Buratti, P., Carnevale, D., Causa, F., Gospodarczyk, M., Martín Solís, José Ramón, Popovic, Zana, Agostini, M., Apruzzese, G, Bin, W., Cianfarani, C., De Angelis, R., Granucci, G., Grosso, A., Maddaluno, G., Marocco, D., Piergotti, V., Pensa, A., Podda, S., Pucella, G., Ramogida, G., Rocchi, G., Riva, M., Sibio, A., Sozzi, C., Tilia, B., Tudisco, O., Valisa, M., FTU Team   +29 more
openaire   +6 more sources

Underlying mechanisms of transient luminous events: a review [PDF]

Annales Geophysicae, 2012
Transient luminous events (TLEs) occasionally observed above a strong thunderstorm system have been the subject of a great deal of research during recent years. The main goal of this review is to introduce readers to recent theories of electrodynamics
V. V. Surkov, M. Hayakawa
doaj   +1 more source

The Origin of Persistently Nonthermal Solar Wind Electrons: the Steady Electron Runaway Model's Demonstration of Dreicer Bifurcation using Measured and Ion–Electron Coulomb Drag

The Astrophysical Journal, 2023
The Steady Electron Runaway Model (SERM) develops the hypothesis that the solar wind’s observed ubiquitous nonthermal electron velocity distribution functions (eVDFs) are caused by Dreicer's velocity space bifurcation in the strong dimensionless ...
Jack D. Scudder
doaj   +1 more source

Runaway-electron formation and electron slide-away in an ITER post-disruption scenario [PDF]

, 2016
Mitigation of runaway electrons is one of the outstanding issues for a reliable operation of ITER and other large tokamaks, and accurate estimates for the expected runaway- electron energies and current are needed.
Embréus, Ola, Fülöp, Tünde, Landreman, M, Papp, Gergely, Stahl, Adam   +4 more
core   +2 more sources

Long-Lived Banana Orbit Formation of Suprathermal Electrons During MHD Spikes in Runaway Tokamak Discharges

East European Journal of Physics, 2019
The secondary runaway electrons generation is the process in which already existing high energy runaway electrons knock out thermal plasma electrons directly into the runaway region by close Coulomb collisions.
Igor Pankratov, Volodymyr Bochko
doaj   +1 more source

Runaway electrons and their interaction with tungsten wall: a comprehensive study of effects

Scientific Reports, 2023
Runaway electrons are a notable phenomenon occurring during the operation of a tokamak. Proper material selection for the tokamak's first wall structure and plasma facing components, particularly in large sizes tokamaks like ITER and DEMO, is crucial due
Laleh Ataeiseresht, Mohammad Reza Abdi, Banafsheh Pourshahab, Chapar Rasouli   +3 more
doaj   +1 more source