Results 131 to 140 of about 6,414 (234)

First experiments on RF plasma production at relatively low magnetic fields in the LHD

Nuclear Fusion
The results of the first experimental series to produce a plasma using the radio frequency discharge (RF) above the ion cyclotron frequency at relatively low magnetic fields (0.5–0.6 T) in the Large Helical Device (LHD) are presented 1.43 MW of RF power ...
Yu.V. Kovtun, S. Kamio, V.E. Moiseenko, H. Kasahara, T. Seki, K. Saito, R. Seki, S. Masuzaki, S. Brezinsek, A. Dinklage   +9 more
doaj   +1 more source

Impurity leakage mechanisms in the Wendelstein 7-X island divertor under friction-dominated conditions

Nuclear Fusion
The EMC3-Eirene code was used to study the main impurity leakage mechanism for the island divertor in the standard magnetic field configuration. It was found that under experimentally accessible plasma scenarios in the last experimental campaign, the ...
V.R. Winters, F. Reimold, Y. Feng, V. Perseo, M. Beurskens, S. Bozhenkov, K.J. Brunner, G. Fuchert, R. Koenig, J. Knauer, M. Krychowiak, E. Pasch, E. Scott, D. Zhang, the W7-X Team   +14 more
doaj   +1 more source

Numerical simulation of neutral gas dynamics in the W7-X sub-divertor

Nuclear Fusion
The present work presents a 2D and 3D modeling of the neutral gas flow in the sub-divertor region of the W7-X. The investigations have been done using the DIVGAS code. The complex 2D and 3D geometries of the divertor components in the sub-divertor region
S. Varoutis, C. Tantos, H. Strobel, C. Day, C.P. Dhard, V. Haak, Y. Igitkhanov, D. Naujoks, the W7-X Team   +8 more
doaj   +1 more source

Stellar Velocities and Stellar Physics [PDF]

Nature, 1930
openaire   +1 more source

Stellarator approach to fusion plasma confinement [PDF]

, 1985
The stellarator is a toroidal fusion plasma confinement device with nested magnetic flux surfaces. The required twist of the field lines is produced by external helical coils rather than by plasma current, as in a tokamak.
Harris, J. H.
core  

Proof-of-principle of parametric stellarator neutronics modeling using Serpent2

Nuclear Fusion
This contribution presents neutron transport studies for the 5-period helical-axis advanced stellarator stellarator using the Serpent2 code. These studies utilize a parametric geometry model, enabling scans in neutronics modeling by varying the thickness
T. Lyytinen, A. Snicker, J. Virtanen, I. Palermo, J. Alguacil, Timo Bogaarts, F. Warmer   +6 more
doaj   +1 more source

Conceptual design studies of the Modular Stellarator Reactor (MSR)

, 1981
A preliminary conceptual study has been made of the Modular Stellarator Reactor (MSR) as a steady-state, ignited, DT-fueled, magnetic fusion reactor. The MSR concept combines the physics of classic stellarator confinment with an innovative, modular-coil ...
Miller, R. J., Krakowski, R. A.
core  

Stellar evolution and stellar populations

, 2019
I will overview how the theory of stellar evolution and stellar populations evolved to explain the rich features observed in large surveys of the Magellanic Clouds -- going from subtle features in colour-magnitude diagrams to striking sequences in period-magnitude diagrams.
openaire   +2 more sources

Innovative approaches towards an economic fusion reactor. [PDF]

Natl Sci Rev, 2020
Guo H, Thio FYC, Binderbauer MW, Buttery RJ, Jarboe TR, Maingi R, Sarff JS, Stangeby PC, Sutherland DA, Wade MR, Zarnstorff MC.   +10 more
europepmc   +1 more source

Hydrogen isotope effect on self-organized electron internal transport barrier criticality and role of radial electric field in toroidal plasmas. [PDF]

Sci Rep, 2022
Kobayashi T, Shimizu A, Nishiura M, Ido T, Satake S, Tokuzawa T, Ii Tsujimura T, Nagaoka K, Ida K.   +8 more
europepmc   +1 more source