Impact of vibrationally resolved H2 on particle balance in Eirene simulations
Contributions to Plasma Physics, Volume 62, Issue 5-6, June‐July 2022., 2022 Abstract To evaluate the impact of transport of metastable, vibrationally excited states of the hydrogen molecule in dense and cold plasmas each vibrational state must be simulated as an individual species. Eirene neutral gas simulations of a one‐dimensional flux‐tube using a metastable‐resolved model indicate a 30–50% decrease in the effective ...
Andreas Holm +3 more
wiley +1 more source
3D simulations of gas puff effects on edge plasma and ICRF coupling in JET [PDF]
, 2017 Recent JET (ITER-Like Wall) experiments have shown that the fueling gas puffed from different locations of the vessel can result in different scrape-off layer (SOL) density profiles and therefore different radio frequency (RF) coupling.
Bilato, R. +14 more
core +4 more sources
Plasma response impact on RMP divertor footprint modeling for KSTAR
Nuclear Materials and Energy, 2023 The striation pattern of heat loads on the divertor targets is determined by the plasma response to external resonant magnetic perturbations (RMPs) applied for suppression of edge localized modes (ELMs).
H. Frerichs +6 more
doaj +1 more source
Integration of kinetic ions in a three‐dimensional Monte‐Carlo neutral transport code
Contributions to Plasma Physics, Volume 60, Issue 5-6, June-July 2020., 2020 Abstract Charged particles of species different from the major constituents of a plasma might not reach local thermodynamic equilibrium during their lifespan. Such low collisional ions render the often‐used fluid description, assuming Maxwellian velocity distribution, as insufficient. Hence, kinetic treatment of such minorities becomes inevitable.
Friedrich Schluck
wiley +1 more source
Experimental observations and modelling of radiation asymmetries during N2 seeding in LHD
Nuclear Materials and Energy, 2021 N2 gas has been seeded in the Large Helical Device (LHD) to reduce the divertor heat load through enhanced radiation. Radiation is observed by two imaging bolometers, viewing the same poloidal cross-section from top and bottom ports, at a location which ...
B.J. Peterson +16 more
doaj +1 more source
3D simulations of gas puff effects on edge density and ICRF coupling in ASDEX Upgrade [PDF]
, 2016 In recent experiments, a local gas puff was found to be an effective way to tailor the scrape-off layer (SOL) density and improve the ion cyclotron range of frequency (ICRF) power coupling in tokamaks.
Bilato, R. +10 more
core +2 more sources
Synthetic plasma edge diagnostics for EMC3-EIRENE, highlighted for Wendelstein 7-X [PDF]
Review of Scientific Instruments, 2016 Interpretation of spectroscopic measurements in the edge region of high-temperature plasmas can be a challenge since line of sight integration effects make direct interpretation in terms of quantitative, local emission strengths often impossible. The EMC3-EIRENE code—a 3D fluid edge plasma and kinetic neutral gas transport code—is a suitable tool for ...
H. Frerichs +12 more
openaire +3 more sources
Modelling of the ICRF induced E x B convection in the scrape-off-layer of ASDEX Upgrade [PDF]
, 2016 In magnetic controlled fusion devices, plasma heating with radio-frequency (RF) waves in the ion cyclotron (IC) range of frequency relies on the electric field of the fast wave to heat the plasma.
A Křivská +14 more
core +1 more source
Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade [PDF]
, 2017 The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significantly improved by
Ana Kostic +33 more
core +2 more sources