Results 101 to 110 of about 4,926 (209)

Core plasma fueling by fast inward particle transport after hydrogen pellet injection in Wendelstein 7-X

Nuclear Fusion
A large database of more than 1000 individual cryogenic hydrogen pellets injected into Wendelstein 7-X for plasma fueling was analyzed to improve the understanding of the three phases of the process: the ablation, deposition and transport of the pellet ...
H. Damm, J. Baldzuhn, R.C. Wolf, T.S. Petersen, J. Schilling, N. Panadero, S.A. Bozhenkov, C. Brandt, K.J. Brunner, G. Fuchert, J. Knauer, A. Langenberg, S. Kwak, N.A. Pablant, E. Pasch, H. Thomsen, the W7-X Team   +16 more
doaj   +1 more source

Demonstration of reduced neoclassical energy transport in Wendelstein 7-X. [PDF]

Nature, 2021
Beidler CD, Smith HM, Alonso A, Andreeva T, Baldzuhn J, Beurskens MNA, Borchardt M, Bozhenkov SA, Brunner KJ, Damm H, Drevlak M, Ford OP, Fuchert G, Geiger J, Helander P, Hergenhahn U, Hirsch M, Höfel U, Kazakov YO, Kleiber R, Krychowiak M, Kwak S, Langenberg A, Laqua HP, Neuner U, Pablant NA, Pasch E, Pavone A, Pedersen TS, Rahbarnia K, Schilling J, Scott ER, Stange T, Svensson J, Thomsen H, Turkin Y, Warmer F, Wolf RC, Zhang D, W7-X Team.   +39 more
europepmc   +1 more source

Quasi-Isodynamic Stellarators with Low Turbulence as Fusion Reactor Candidates

PRX Energy
The stellarator is a type of fusion energy device that—if properly designed—could provide clean, safe, and abundant energy to the grid. To generate this energy, a stellarator must keep a hot mixture of charged particles (known as a plasma) sufficiently ...
Alan G. Goodman, Pavlos Xanthopoulos, Gabriel G. Plunk, Håkan Smith, Carolin Nührenberg, Craig D. Beidler, Sophia A. Henneberg, Gareth Roberg-Clark, Michael Drevlak, Per Helander   +9 more
doaj   +1 more source

Investigating the role of divertor geometry on density build-up in the island divertor

Nuclear Materials and Energy
The island divertor has been proposed for power and particle exhaust in stellarators. It is investigated in the Wendelstein 7-X (W7-X) experiment. The divertor capabilities such as particle exhaust or radiative power dissipation scale with the divertor ...
N. Maaziz, F. Reimold, V.R. Winters, D. Bold, Y. Feng, V. Perseo   +5 more
doaj   +1 more source

Piecewise Omnigenous Stellarators

Physical Review Letters
In omnigenous magnetic fields, charged particles are perfectly confined in the absence of collisions and turbulence. For this reason, the magnetic configuration is optimized to be close to omnigenity in any candidate for a stellarator fusion reactor.
J. L. Velasco, I. Calvo, F. J. Escoto, E. Sánchez, H. Thienpondt, F. I. Parra   +5 more
openaire   +3 more sources

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

Atomic Physics and Spectroscopy During the First 50 Years of JPCRD. [PDF]

J Phys Chem Ref Data, 2022
Ralchenko Y.
europepmc   +1 more source

Basin Entropy and Shearless Barrier Breakup in Open Non-Twist Hamiltonian Systems. [PDF]

Entropy (Basel), 2023
Souza LC, Mathias AC, Haerter P, Viana RL.   +3 more
europepmc   +1 more source

Physical origin of ultra-high neutral pressures in the Large Helical Device

Nuclear Fusion
Efficient particle exhaust remains a key challenge in magnetic confinement fusion, particularly in stellarators, where divertor neutral pressures are typically low. Recently, exceptionally high neutral pressures-up to 2.4 Pa-were measured in the divertor
U. Wenzel, G. Motojima, S. Masuzaki, M. Kobayashi, M. Goto, B. Peterson, M. Shoji   +6 more
doaj   +1 more source

A simplified model to estimate nonlinear turbulent transport by linear dynamics in plasma turbulence. [PDF]

Sci Rep, 2023
Nakayama T, Nakata M, Honda M, Narita E, Nunami M, Matsuoka S.   +5 more
europepmc   +1 more source