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AmeriFlux FLUXNET-1F US-KS3 Kennedy Space Center (salt marsh)

This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site US-KS3 Kennedy Space Center (salt marsh). This is the FLUXNET version of the carbon flux data for the site US-KS3 Kennedy Space Center (salt marsh) produced by applying the standard ONEFlux (1F) software. Site Description - Salt marsh dominated by Distichlis and being encroached by Mangrove

Bracho, Rosvel↗

Materials Data on KS3 by Materials Project

S2KS crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine S+0.33- atoms. There are a spread of K–S bond distances ranging from 3.22–3.81 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight S+0.33- atoms. There are a spread of K–S bond distances ranging from 3.24–3.80 Å. There are six inequivalent S+0.33- sites. In the first S+0.33- site, S+0.33- is bonded to four K1+ and one S+0.33- atom to form distorted SK4S square pyramids that share corners with two equivalent SK4S square pyramids, corners with four equivalent SK2S2 tetrahedra, corners with two equivalent SK4S trigonal bipyramids, edges with two equivalent SK4S square pyramids, and edges with two equivalent SK4S trigonal bipyramids. The S–S bond length is 2.06 Å. In the second S+0.33- site, S+0.33- is bonded in a 5-coordinate geometry to three K1+ and two S+0.33- atoms. The S–S bond length is 2.05 Å. In the third S+0.33- site, S+0.33- is bonded in a 4-coordinate geometry to two K1+ and two S+0.33- atoms. The S–S bond length is 2.19 Å. In the fourth S+0.33- site, S+0.33- is bonded in a 4-coordinate geometry to two K1+ and two S+0.33- atoms. The S–S bond length is 2.04 Å. In the fifth S+0.33- site, S+0.33- is bonded to two K1+ and two S+0.33- atoms to form distorted corner-sharing SK2S2 tetrahedra. The S–S bond length is 2.06 Å. In the sixth S+0.33- site, S+0.33- is bonded to four K1+ and one S+0.33- atom to form distorted SK4S trigonal bipyramids that share corners with two equivalent SK4S square pyramids, corners with four equivalent SK2S2 tetrahedra, corners with two equivalent SK4S trigonal bipyramids, edges with two equivalent SK4S square pyramids, and edges with two equivalent SK4S trigonal bipyramids.

36 MATERIALS SCIENCE↗

Validation of SOLPS-ITER simulations with kinetic, fluid, and hybrid neutral models for JET-ILW low-confinement mode plasmas

For JET L-mode plasmas in low-recycling conditions (electron temperature at the outer strike point, T e,ot ≳ 30 eV ), SOLPS-ITER simulations agree within the error bars for the experimental profiles at the low-field side (LFS) divertor target. The peak Balmer-α (Dα ) emission in the LFS divertor agrees within the error bars of the KS3 filterscope diagnostic, but is approximately 30% lower than the peak value of the KT1 spectrometer. Simulations have been performed with fluid, kinetic, and hybrid models for the neutrals. The large fluid-kinetic discrepancies of more than a factor 2 are successfully corrected by using a hybrid fluid-kinetic approach, for which kinetic atoms are transferred to the fluid population when the local Knudsen number of the atom becomes smaller than a user-defined transition Knudsen number Kn t . The hybrid-kinetic discrepancies are limited to a few % for Kn t ≤ 100 . When increasing the upstream density to high-recycling conditions, at the onset of detachment ( T e,ot ≈ 5 eV ), the simulations predict more than a factor 2 lower peak ion saturation current to the LFS divertor than the experiments. Also the Dα emission is underpredicted with approximately a factor 2. For these high-recycling conditions, the fluid-kinetic discrepancies are limited to maximum 50%, which are again corrected by using the hybrid approach.

70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗