A Contactless Density Profile Measurement Device
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry and Technology of Fuels and Oils"
DOI: 10.1007/s10553-019-01004-w
Abstract: A device is proposed for contactless measurement of density profile in oil refining, chemical, and mining industries. The device consists of a γ-radiation source, a shield, and a proportional counter with xenon accumulation and counting… read more here.
Keywords: contactless density; density profile; density; measurement ... See more keywords
Density profile evolution on EAST tokamak by the polarimeter/interferometer system
Sign Up to like & getrecommendations! Published in 2018 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2018.04.036
Abstract: Abstract An 11-channel POlarimeter/INTerferometer (POINT) system with high time resolution (1 μs) was built in 2015 to measure the accurate line-integrated electron density and Faraday rotation angle on the EAST tokamak. An improved density profile reconstruction… read more here.
Keywords: system; density profile; density; east tokamak ... See more keywords
Impact of wall materials and seeding gases on the pedestal and on core plasma performance
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear materials and energy"
DOI: 10.1016/j.nme.2017.01.002
Abstract: Plasmas in machines with all metal plasma facing components have a lower Zeff, less radiation cooling in the scrape-off layer and divertor regions and are prone to impurity accumulation in the core. Higher gas puff… read more here.
Keywords: plasma; confinement; edge; density profile ... See more keywords
A statistical study of the inferred transverse density profile of coronal loop threads observed with SDO/AIA
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731023
Abstract: Aims. We carry out a statistical study of the inferred coronal loop cross-sectional density profiles using extreme ultraviolet (EUV) imaging data from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). Methods.… read more here.
Keywords: evidence; density profile; density; model ... See more keywords
Role of ion magnetization in formation of radial density profile in magnetically expanding plasma produced by helicon antenna
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5028576
Abstract: Experimentally, the density profile in the magnetic nozzle of a helicon antenna based plasma device is seen to be modified from being centrally peaked to that of hollow nature as the external magnetic field is… read more here.
Keywords: chamber; plasma; field; density ... See more keywords
Impact of the radial density profile on the Z-pinch stability at a microsecond rise time of the driving current
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Plasmas"
DOI: 10.1063/5.0132064
Abstract: This paper considers the instabilities of imploding aluminum metal-puff Z-pinches with an outer plasma shell. An experiment was performed on the GIT-12 generator (3.2–3.6 MA, ∼1 μs implosion times, and ∼15 cm initial Z-pinch radius). It… read more here.
Keywords: density; profile pinch; density profile; instability ... See more keywords
Simulation-based inference of high-field side scrape-off layer filament characteristics using density profile reflectometry
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Plasmas"
DOI: 10.1063/5.0298509
Abstract: Simulation-based inference (SBI) is applied to high-field side (HFS) scrape-off layer (SOL) density profile reflectometry measurements on DIII-D, resulting in the inference of filament characteristics and fluctuation magnitudes. The predicted density fluctuation levels are found… read more here.
Keywords: profile reflectometry; filament; density; field side ... See more keywords
Suppression of equilibrium magnetic islands by density profile effect in quasi-axisymmetric stellarator plasmas
Sign Up to like & getrecommendations! Published in 2024 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ad441b
Abstract: In a quasi-axisymmetric stellarator, a significant bootstrap current will result in the generation of low-order rational surfaces and three-dimensional (3D) magnetic islands. In this paper, the influence of plasma density profiles on the equilibrium magnetic… read more here.
Keywords: magnetic islands; quasi axisymmetric; axisymmetric stellarator; density ... See more keywords
Development of real-time density profile inversion with deep neural network model for multi-bands X-mode polarization reflectometer on EAST
Sign Up to like & getrecommendations! Published in 2025 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/adc830
Abstract: Microwave reflectometry will serve as the primary diagnostic tool for measuring plasma density in ITER. The real-time inversion of high spatiotemporal resolution density profiles is a critical research focus for plasma fueling and control in… read more here.
Keywords: real time; time; profile inversion; density ... See more keywords
Effects of midplane density gradient in the propagation of high-harmonic fast waves considering high temperature anisotropy in the scrape-off layer of NSTX-U
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/ae08fc
Abstract: High-Harmonic Fast Wave (HHFW) heating experiments in NSTX have shown that up to 60% of the injected power can be lost in the Scrape-Off Layer (SOL) when the density is above the fast wave cutoff… read more here.
Keywords: temperature; propagation; sol; profile ... See more keywords
The effect of transient density profile shaping on transport in large stellarators and heliotrons
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa6775
Abstract: Transport studies of pellet fuelling experiments on LHD are reported. Spatio-temporal evolutions after pellet injection into LHD discharges show cases where central density increases on the time scale of particle transport processes. Both the temperature… read more here.
Keywords: transport; effect transient; density profile; density ... See more keywords