Results 11 to 20 of about 183,265 (263)
Interactions of fast ions with graphene [PDF]
Hemijska Industrija, 2009 In this work, we study the interactions of fast ions with graphene describing the excitations of the electron gas in graphene by a two-dimensional (2D) hydrodynamic model (one-fluid and two-fluid model).
Radović Ivan S. +3 more
doaj +3 more sources
Shuttling of Rydberg Ions for Fast Entangling Operations [PDF]
Physical Review Letters, 2019 8 pages, 4 ...
Weibin Li +2 more
exaly +4 more sources
Nonlinear Stabilization of Tokamak Microturbulence by Fast Ions [PDF]
Physical Review Letters, 2013 Nonlinear electromagnetic stabilization by suprathermal pressure gradients found in specific regimes is shown to be a key factor in reducing tokamak microturbulence, augmenting significantly the thermal pressure electromagnetic stabilization. Based on nonlinear gyrokinetic simulations investigating a set of ion heat transport experiments on the JET ...
Paola Mantica +2 more
exaly +5 more sources
Controlling Fast Transport of Cold Trapped Ions [PDF]
Physical Review Letters, 2012 We realize fast transport of ions in a segmented micro-structured Paul trap. The ion is shuttled over a distance of more than 10^4 times its groundstate wavefunction size during only 5 motional cycles of the trap (280 micro meter in 3.6 micro seconds). Starting from a ground-state-cooled ion, we find an optimized transport such that the energy increase
Ulrich Poschinger +1 more
exaly +4 more sources
Energetic particle optimization of quasi-axisymmetric stellarator equilibria
Nuclear Fusion, 2022 An important goal of stellarator optimization is to achieve good confinement of energetic particles such as, in the case of a reactor, alphas created by deuterium–tritium fusion. In this work, a fixed-boundary stellarator equilibrium was re-optimized for
Alexandra LeViness +6 more
doaj +1 more source
Neutral Beams for Neutron Generation in Fusion Neutron Sources
Atoms, 2022 Neutral beam injection is supposed to be the main source of high-energy particles, driving non-inductive current and generating primary neutrons in fusion neutron sources design based on tokamaks.
Eugenia Dlougach +2 more
doaj +1 more source
Gyrokinetic turbulence modeling of a high performance scenario in JT-60SA
Nuclear Fusion, 2023 Local gyrokinetic simulations are used to model turbulent transport for the first time in a representative high-performance plasma discharge projected for the new JT-60SA tokamak. The discharge features a double-null separatrix, 41 MW of combined neutral
A. Iantchenko +3 more
doaj +1 more source
A linear parameters study of ion cyclotron emission using drift ring beam distribution
Nuclear Fusion, 2023 Ion Cyclotron Emission (ICE) holds great potential as a diagnostic tool for fast ions in fusion devices. The theory of Magnetoacoustic Cyclotron Instability (MCI), as an emission mechanism for ICE, states that MCI is driven by a velocity distribution of ...
Haozhe Kong, Huasheng Xie, Jizhong Sun
doaj +1 more source
Fast-ion Dα measurements of the fast-ion distribution (invited) [PDF]
Review of Scientific Instruments, 2010 The fast-ion Dα (FIDA) diagnostic is an application of charge-exchange recombination spectroscopy. Fast ions that neutralize in an injected neutral beam emit Balmer-α light with a large Doppler shift. The spectral shift is exploited to distinguish the FIDA emission from other bright sources of Dα light.
openaire +4 more sources
Fast ion losses in the W7-AS stellarator [PDF]
Review of Scientific Instruments, 2001 A new probe for the detection of fast escaping ions has been installed and operated at the W7-AS stellarator. Fast ions generated from neutral beam injection or ion cyclotron heating were used to study the fast ion confinement properties of the partially drift-optimized magnetic field structure as well as losses induced by magnetohydrodynamic ...
Werner, A., Weller, A., Darrow, D.
openaire +3 more sources