Theoretical explanation of I-mode impurity removal and energy confinement
Sign Up to like & getrecommendations! Published in 2018 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aad0c9
Abstract: Improved (I) mode operation maintains the beneficial improved energy confinement of high (H) mode operation while also providing natural fueling to compensate for impurity removal. We show that outward collisional radial impurity flux occurs for… read more here.
Keywords: energy confinement; impurity removal; mode; impurity ... See more keywords
Physics-based integrated modeling of the energy confinement time scaling laws for the H- and L-modes in the KSTAR-type tokamak model
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa623b
Abstract: In an effort to clarify the physics origin of the energy confinement time scaling law in H-mode plasmas, a new analysis method is first proposed where the stored energy is separated into two parts—one coming… read more here.
Keywords: energy; physics; confinement time; energy confinement ... See more keywords
Plasma composition control by mixture pellets at ASDEX Upgrade
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aaf294
Abstract: Experiments were performed that aimed to control the plasma isotopic mixture by delivering supplemental components into the plasma via pellet injection. Pellets, mm sized solid bodies of frozen fuel, are either formed from a mixture… read more here.
Keywords: plasma; control; energy confinement; composition ... See more keywords
On the very high energy confinement observed in super H-mode DIII-D experiments
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DOI: 10.1088/1741-4326/ab66db
Abstract: Analysis of recent super H-mode experiments on DIII-D shows that high rotation, not high pedestal, plays the essential role in achieving very high confinement . Very high confinement is reached early on in the H-mode… read more here.
Keywords: mode; confinement; diii; rotation ... See more keywords
Increasing the density in Wendelstein 7-X: benefits and limitations
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DOI: 10.1088/1741-4326/ab6d40
Abstract: In stellarators, increasing the density is beneficial for the energy confinement. While there is no single reason for this observation, it is still very robust across different devices and this is reflected in the empirical… read more here.
Keywords: energy; time; density; energy confinement ... See more keywords
Strong Isotope Effect in Energy Confinement at the FT-2 Tokamak
Sign Up to like & getrecommendations! Published in 2019 at "Plasma Physics Reports"
DOI: 10.1134/s1063780x19120043
Abstract: The effect of the isotope content of plasma (hydrogen/deuterium) on energy confinement time was studied at the FT-2 tokamak. A strong isotope effect is discovered, which is manifested in the deuterium plasma in high-density regimes.… read more here.
Keywords: effect; energy confinement; isotope effect; strong isotope ... See more keywords