. "Effects of orbit squeezing on neoclassical toroidal plasma viscosity in tokamaks"@en . . "Dopady stla\u010Den\u00ED orbit\u016F na neoklasickou toroid\u00E1ln\u00ED viskozitu plazmatu v tokamac\u00EDch"@cs . "5"^^ . . . "365410" . "000259448900043" . "The effects of orbit squeezing are important to neoclassical and anomalous transport fluxes in the region where plasma confinement is improved. This occurs in the edge region after the transition from L-mode to H-mode or in the vicinity of low-order rational surfaces. Neoclassical toroidal viscosity in tokamaks induced by the broken toroidal symmetry is calculated to include orbit squeezing effects. It is found that in the 1/\u03BD regime, the magnitude of the neoclassical toroidal viscosity is enhanced by a factor of |S|3/2, where \u03BD is the collision frequency and S is the orbit squeezing factor; while in the \u03BD regime, it is reduced by a factor of |S|1/2. A boundary layer analysis is performed to remove the singularity in the vicinity of the trapped-circulating boundary in the \u03BD regime. As a result, the well-known \u0192\u00CB regime is recovered. Orbit squeezing has little effect in the \u0192\u00CB regime. The implications on the physics of H-mode confinement are also discussed." . "15" . . "Dopady stla\u010Den\u00ED orbit\u016F na neoklasickou toroid\u00E1ln\u00ED viskozitu plazmatu v tokamac\u00EDch"@cs . . "plasma boundary layers; plasma instability; plasma magnetohydrodynamics; plasma toroidal confinement; plasma transport processes; Tokamak devices"@en . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Cahyna, Pavel" . . "1070-664X" . "RIV/61389021:_____/08:00318187!RIV09-AV0-61389021" . "The effects of orbit squeezing are important to neoclassical and anomalous transport fluxes in the region where plasma confinement is improved. This occurs in the edge region after the transition from L-mode to H-mode or in the vicinity of low-order rational surfaces. Neoclassical toroidal viscosity in tokamaks induced by the broken toroidal symmetry is calculated to include orbit squeezing effects. It is found that in the 1/\u03BD regime, the magnitude of the neoclassical toroidal viscosity is enhanced by a factor of |S|3/2, where \u03BD is the collision frequency and S is the orbit squeezing factor; while in the \u03BD regime, it is reduced by a factor of |S|1/2. A boundary layer analysis is performed to remove the singularity in the vicinity of the trapped-circulating boundary in the \u03BD regime. As a result, the well-known \u0192\u00CB regime is recovered. Orbit squeezing has little effect in the \u0192\u00CB regime. The implications on the physics of H-mode confinement are also discussed."@en . . . "159"^^ . "Effects of orbit squeezing on neoclassical toroidal plasma viscosity in tokamaks" . "Physics of Plasmas" . "Effects of orbit squeezing on neoclassical toroidal plasma viscosity in tokamaks"@en . . . "RIV/61389021:_____/08:00318187" . "Shaing, K. C." . "Sabbagh, S. A." . . "Z(AV0Z20430508)" . "B\u00E9coulet, M." . . "8" . . "Stla\u010Den\u00ED orbit\u016F je v\u00FDznamn\u00E9 pro neoklasick\u00E9 a anom\u00E1ln\u00ED transportn\u00ED toky v oblasti se zlep\u0161en\u00FDm udr\u017Een\u00EDm plazmatu. K tomu doch\u00E1z\u00ED v okrajov\u00E9 oblasti po p\u0159echodu do H-modu nebo v bl\u00EDzkosti racion\u00E1ln\u00EDch ploch n\u00EDzk\u00E9ho \u0159\u00E1du. Neoklasick\u00E1 toroid\u00E1ln\u00ED viskozita v tokamac\u00EDch indukovan\u00E1 naru\u0161enou toroid\u00E1ln\u00ED symetri\u00ED je spo\u010Dtena se zahrnut\u00EDm efekt\u016F stla\u010Den\u00ED orbit\u016F. Bylo nalezeno \u017Ee v 1/\u03BD re\u017Eimu je velikost neoklasick\u00E9 toroid\u00E1ln\u00ED viskozity zv\u011Bt\u0161ena faktorem |S|3/2, kde \u03BD je sr\u00E1\u017Ekov\u00E1 frekvence a S je faktor stla\u010Den\u00ED orbit\u016F, zat\u00EDmco v \u03BD re\u017Eimu je zmen\u0161ena faktorem |S|1/2. Anal\u00FDza hrani\u010Dn\u00ED vrstvy je provedena za \u00FA\u010Delem odstran\u011Bn\u00ED singularity v bl\u00EDzkosti hranice mezi zachycen\u00FDmi a ob\u00EDhaj\u00EDc\u00EDmi orbitami v \u03BD re\u017Eimu. V\u00FDsledkem je nalezen\u00ED dob\u0159e zn\u00E1m\u00E9ho \u0192\u00CB re\u017Eimu. Stla\u010Den\u00ED orbit m\u00E1 mal\u00FD dopad v \u0192\u00CB re\u017Eimu. Tak\u00E9 jsou diskutov\u00E1ny d\u016Fsledky pro fyziku udr\u017Een\u00ED v H-modu."@cs . . "Effects of orbit squeezing on neoclassical toroidal plasma viscosity in tokamaks" . . "1"^^ . "[59C09D0C4580]" . "Chu, M. S." . . .