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2017-07-25
13:27
[FZJ-2017-05162] Journal Article
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Can aluminium or magnesium be a surrogate for beryllium: A critical investigation of their chemistry
ddc:620
The use of beryllium is still an existing question according to the studies concerning the plasma–wall interactions which are expected to occur in ITER. Prediction of erosion and co-deposition processes for ITER is necessary for the design and the material choice of the first wall. [...]
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2017-07-25
13:19
OpenAccess [FZJ-2017-05158] Journal Article
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Conceptual study of ferromagnetic pebbles for heat exhaust in fusion reactors with short power decay length
ddc:333.7
Ferromagnetic pebbles are investigated as high heat flux (q∥) plasma facing components in fusion devices with short power decay length (λq) on a conceptual level. The ability of a pebble concept to cope with high heat fluxes is retained and extended by the acceleration of ferromagnetic pebbles in magnetic fields. [...]
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2017-07-25
13:10
OpenAccess [FZJ-2017-05157] Journal Article/Contribution to a conference proceedings
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Hadron Structure from the Feynman–Hellmann Theorem
34th annual International Symposium on Lattice Field Theory, LATTICE2016, Meeting locationSouthampton, UK, 24 Jul 2016 - 30 Jul 20162016-07-242016-07-30
Proceedings of Science LATTICE2016, 168 (2017)
ddc:530
The determination of hadronic form factors at large momentum transfers has been a challenging problem in lattice QCD simulations. Here we show how the Feynman–Hellmann method may be extended to non-forward matrix elements to calculate hadronic form factors in lattice QCD at much higher momenta than previously accessible. [...]
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2017-07-25
13:03
OpenAccess [FZJ-2017-05154] Journal Article/Contribution to a conference proceedings
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Towards a determination of the ratio of the kaon to pion decay constants
34th annual International Symposium on Lattice Field Theory, LATTICE2016, Meeting locationSouthampton, UK, 24 Jul 2016 - 30 Jul 20162016-07-242016-07-30
Proceedings of Science LATTICE2016, 284 (2017)
ddc:530
The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio of kaon to pion decay constants in QCD. [...]
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2017-07-25
12:47
OpenAccess [FZJ-2017-05146] Journal Article/Contribution to a conference proceedings
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Viscosity of the pure SU(3) gauge theory revisited
34th International Symposium on Lattice Field Theory, LATTICE2016, Meeting locationSouthampton, UK, 24 Jul 2016 - 30 Jul 20162016-07-242016-07-30
Proceedings of Science LATTICE2016, 073 (2017)
ddc:530
We compute the Euclidean correlators of the energy-momentum tensor in Yang-Mills theory at finite temperature at zero and finite spatial momenta with lattice simulations. We perform continuum extrapolations of these quantities using Nt = 10;12;16 lattices. [...]
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2017-07-25
12:42
[FZJ-2017-05143] Journal Article
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Nitrogen retention mechanisms in tokamaks with beryllium and tungsten plasma-facing surfaces
ddc:530
Global gas balance experiments at ASDEX Upgrade (AUG) and JET have shown that a considerable fraction of nitrogen injected for radiative cooling is not recovered as N2 upon regeneration of the liquid helium cryo pump. The most probable loss channels are ion implantation into plasma-facing materials, co-deposition and ammonia formation. [...]
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2017-07-25
11:58
OpenAccess [FZJ-2017-05126] Journal Article/Contribution to a conference proceedings
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Disconnected hadronic contribution to the muon magnetic moment at the physical point
34th International Symposium on Lattice Field Theory, Meeting locationSouthampton, UK, 24 Jul 2016 - 30 Jul 20162016-07-242016-07-30
Proceedings of Science LATTICE 2016, 171 (2017)
ddc:530
We compute the slope and curvature, at vanishing four-momentum transfer squared, of the disconnected contribution of the leading order hadron vacuum polarization function, using lattice QCD. Calculations are performed with 2 + 1 + 1 flavors of staggered fermions directly at the physical values of the quark masses and in volumes of linear extent larger than 6 fm. [...]
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2017-07-25
11:30
OpenAccess [FZJ-2017-05122] Journal Article
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Effect of PFC Recycling Conditions on JET Pedestal Density
ddc:570
There is experimental evidence that the pedestal dynamics in type-I ELMy H-mode discharges is significantly affected by a change in the recycling conditions at the tungsten plasma-facing components (W-PFCs) after an ELM event. The integrated code JINTRAC has been employed to assess the impact of recycling conditions during type-I ELMs in JET ITER-like wall H-mode discharges. [...]
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2017-07-25
11:20
[FZJ-2017-05118] Journal Article
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Molecular physiology of anion channels: dual function proteins and new structural motifs - a special issue
ddc:610
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2017-07-25
11:19
OpenAccess [FZJ-2017-05117] Journal Article
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Modelling of the JET DT Experiments in Carbon and ITER-like Wall Configurations
ddc:570
In this paper numerical simulations with the self-consistent COREDIV code of the planned JET DT experiments have been performed. First, record shot from the 1997 experiments was simulated and good agreement with experimental data has been found. [...]
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