Results 31 to 40 of about 2,917 (170)

Properties of a new quasi-axisymmetric configuration [PDF]

, 2018
A novel, compact, quasi-axisymmetric configuration is presented which exhibits low fast-particle losses and is stable to ideal MHD instabilities. The design has fast-particle loss rates below 8\% for flux surfaces within the half-radius, and is shown to ...
Beidler, C. D., Drevlak, M., Helander, P., Henneberg, S. A., Loizu, J., Nührenberg, C., Turkin, Y.   +6 more
core   +2 more sources

Stellar systems in theory [PDF]

Nature, 1988
Galactic Dynamics. By James Binney and Scott Tremaine. Princeton University Press: 1988. Pp. 733. Hbk $75, £42.10; pbk $25, £14.
openaire   +1 more source

The Riddle of Ball Lightning: A Review

The Scientific World Journal, Volume 6, Issue 1, Page 254-278, 2006., 2006
One of the most intriguing and enduring scientific challenges is to find an explanation for ball lightning, the shining fireballs that sometimes appear near lightning strokes. Although many theoretical ideas have been proposed and much experimental work has been performed, there is not yet an accepted explanation of their amazing properties.
José Donoso, José Luis Trueba, Antonio F. Rañada, Manuel Elices   +3 more
wiley   +1 more source

On neoclassical impurity transport in stellarator geometry

, 2013
The impurity dynamics in stellarators has become an issue of moderate concern due to the inherent tendency of the impurities to accumulate in the core when the neoclassical ambipolar radial electric field points radially inwards (ion root regime).
Beidler C D, Beidler C D Maaßberg H, C D Beidler, Dobrott D R, H Maaßberg, Helander P, Hirsch M, J M García-Regaña, Kauffmann K, Kornilov V, Maaßberg H, Nakamura Y, P Helander, R Kleiber, Y Turkin   +14 more
core   +1 more source

Rotating shallow water modeling of planetary,astrophysical and plasma vortical structures (plasma transport across a magnetic field,model of the jupiter′s GRS, prediction of existence of giant vortices in spiral galaxies)

Discrete Dynamics in Nature and Society, Volume 3, Issue 4, Page 251-266, 1999., 1999
Three kinds of results have been described in this paper. Firstly, an experimental study of the Rossby vortex meridional drift on the rotating shallow water has been carried out. Owing to the stringent physical analogy between the Rossby vortices and drift vortices in the magnetized plasma, the results obtained have allowed one to make a conclusion ...
M. V. Nezlin, A. Yu Rylov, E. N. Snezhkin, K. B. Titishov, G. P. Chernikov   +4 more
wiley   +1 more source

Impurities in a non-axisymmetric plasma: transport and effect on bootstrap current [PDF]

, 2015
Impurities cause radiation losses and plasma dilution, and in stellarator plasmas the neoclassical ambipolar radial electric field is often unfavorable for avoiding strong impurity peaking.
Braun, Stefanie, Helander, Per, Landreman, Matt, Mollén, Albert, Smith, Håkan M.   +4 more
core   +2 more sources

Global magnetofluidostatic fields (an unsolved PDE problem)

International Journal of Mathematics and Mathematical Sciences, Volume 9, Issue 1, Page 123-130, 1986., 1986
A satisfactory theory of the Global MagnetoFluidoStatic (GMFS) Fields, where symmetric and non‐symmetric configurations can be dealt with on the same footing, has not yet been developed. However the formulation of the Nowhere‐Force‐Free, Local‐Global MFS problem about a given smooth isobaric toroidal surface 𝒮0 (actually, a degenerate initial‐value ...
C. Lo Surdo
wiley   +1 more source

Modelling the measured local time evolution of strongly nonlinear heat pulses in the Large Helical Device [PDF]

, 2013
In some magnetically confined plasmas, an applied pulse of rapid edge cooling can trigger either a positive or negative excursion in the core electron temperature from its steady state value.
Chapman, Sandra C., Dendy, R. O., Inagaki, S.   +2 more
core   +1 more source

Methods for Color Center Preserving Hydrogen‐Termination of Diamond

Advanced Materials Interfaces, Volume 11, Issue 24, August 23, 2024.
Hydrogen‐termination of diamond by three methods. Hydrogen plasma exposure with stage heating above 700 °C yields maximal coverage but causes irr loss of shallow nitrogen‐vacancy fluorescence. Plasma exposure without heating preserves nitrogen‐vacancies at the expense of increased oxygen coverage.
Daniel J. McCloskey, Daniel Roberts, Lila V. H. Rodgers, Yuri Barsukov, Igor D. Kaganovich, David A. Simpson, Nathalie P. de Leon, Alastair Stacey, Nikolai Dontschuk   +8 more
wiley   +1 more source

Impact of multifold magnetic structure on spectroscopy analysis in Heliotron J based on EMC3‐EIRENE simulation

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract The distribution pattern of the connection length in the divertor region of Heliotron J was calculated by the field line tracing method. A multifold layer structure, characterized by the range of connection length, was revealed to interpret the response of the transport of the lower‐charged impurity ions to the divertor structure.
F. Cai, S. Kado, G. Kawamura, C. Feng, R. Matoike, A. Miyashita, S. Ohshima, T. Minami, S. Inagaki, F. Kin, S. Kobayashi, A. Ishizawa, Y. Nakamura, H. Okada, S. Konoshima, T. Mizuuchi, Y. Feng, H. Frerichs, K. Nagasaki   +18 more
wiley   +1 more source