Transport of Impurities in Tokamak Edge Turbulence

0371574 - ÚFP 2012 IT eng A - Abstrakt
Seidl, Jakub - Papřok, Richard - Krlín, Ladislav
Transport of Impurities in Tokamak Edge Turbulence.
Book of Abstracts of the 14th European Fusion Theory Conference. Vol. P212. Roma: ENEA-Fusione, 2011. s. 88-88.
[European Fusion Theory Conference(EFTC)/14./. 26.09.2011-29.09.2011, Frascati]
Grant CEP: GA ČR GAP205/10/2055
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: plasma turbulence * plasma impurities * impurity transport * drift waves
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://www.fusione.enea.it/EVENTS/EFTC14/upload/abstractsgiulia/JakubSeidl.pdf

In our contribution we analyze transport of particles with higher mass/charge ratio in Hasegawa-Wakatani model of edge turbulence. Assuming density of impurities low enough not to enter into quasineutrality equation, we trace impurity particles as test particles. Dynamics with full Larmor orbits is determined by 2D Hamiltonian equations of motion and the results are subsequently compared with those obtained using advection by drift velocities. We discuss influence of retaining full Larmor orbits on effects caused by compressibility of polarization drift, i.e. on clustering of impurities preferentially in vortexes with one sign of vorticity and on scaling of mass/charge ratio dependent radial pinch. To analyze statistical properties of the transport we compute probability of particle displacement after given time and discuss its properties in connection with mechanism of particle trapping in potential structures and other properties of the structures like their living time or velocity.
Trvalý link: http://hdl.handle.net/11104/0006834