000124910 001__ 124910
000124910 005__ 20181203021243.0
000124910 02470 $$2DAR$$a12479
000124910 02470 $$2ISI$$a000255456700014
000124910 037__ $$aARTICLE
000124910 245__ $$aThe role of the density gradient on intermittent cross-field transport events in a simple magnetized toroidal plasma
000124910 269__ $$a2008
000124910 260__ $$c2008
000124910 336__ $$aJournal Articles
000124910 520__ $$aIntermittent cross-field particle transport events (ITEs) are studied in the basic toroidal device TORPEX [TORoidal Plasma EXperiment, A. Fasoli et al., Phys. Plasmas 13, 055902 (2006)], with focus on the role of the density gradient. ITEs are due to the intermittent radial elongation of an interchange mode. The elongating positive wave crests can break apart and form blobs. This is not necessary, however, for plasma particles to be convected a considerable distance across the magnetic field lines. Conditionally sampled data reveal two different scenarios leading to ITEs. In the first case, the interchange mode grows radially from a slab-like density profile and leads to the ITE. A novel analysis technique reveals a monotonic dependence between the vertically averaged inverse radial density scale length and the probability for a subsequent ITE. In the second case, the mode is already observed before the start of the ITE. It does not elongate radially in a first stage, but at a later time. It is shown that this elongation is preceded by a steepening of the density profile as well. ©2008 American Institute of Physics
000124910 6531_ $$aspc_edge
000124910 700__ $$0240123$$aTheiler, C.$$g176719
000124910 700__ $$0240125$$aDiallo, A.$$g171560
000124910 700__ $$0240112$$aFasoli, A.$$g105078
000124910 700__ $$0240068$$aFurno, I.$$g111055
000124910 700__ $$0240067$$aLabit, B.$$g157100
000124910 700__ $$0240069$$aPodesta, M.$$g150065
000124910 700__ $$0240121$$aPoli, F.M.$$g151730
000124910 700__ $$0240122$$aRicci, P$$g176621
000124910 773__ $$j15$$k042303$$tPhys. Plasmas
000124910 8564_ $$uhttp://link.aip.org/link/?PHPAEN/15/042303/1$$zURL
000124910 8564_ $$s4457578$$uhttps://infoscience.epfl.ch/record/124910/files/Theiler_PhysPlasmas_15_042303_2008.pdf$$zn/a
000124910 909C0 $$0252028$$pSPC
000124910 909CO $$ooai:infoscience.tind.io:124910$$pSB$$particle
000124910 917Z8 $$x176719
000124910 937__ $$aCRPP-ARTICLE-2008-007
000124910 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000124910 980__ $$aARTICLE