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Description
| - Prezentujeme výsledky ze sondového měření na vnější středorovině okrajového plazmatu tokamaku TCV během experimentů s měnícím proudem plazmatu. Demonstrujeme, že zvyšováním proudu, a tedy zároveň zkracováním paralelní magnetických siločar, se radiální profil hustoty plazmatu rozšiřuje a úroveň fluktuací a turbulentní radiální transport se zvyšuje. Toto jasně osvětluje fakt, že radiální transport se zvyšuje se srážkovostí. Tato závislost na srážkovosti je v souladu s nedávnou teorií pohybu plazmatických kapek (blobů), elektricky oddělené od divertorových desek za vysoké srážkovosti. To zvyšuje radiální konvektivní transport and souvisí pravděpodobně s hustotním limitem. (cs)
- Results are presented from probe measurements at the outboard midplane scrape-off layer region of TCV current scan experiments. It is shown that with decreasing plasma current, or increasing magnetic connection length, the radial particle density profile becomes broader and the fluctuation levels and turbulence driven radial transport increases. This strongly indicates that plasma fluctuations and radial transport increases with plasma collisionality. Such collisionality dependence is consistent with a recent theory for radial blob motion, which suggests that filamentary structures become electrically disconnected from the target sheaths at large collisionality and thus experience less sheath dissipation. This increases the radial convective transport and is likely linked to the discharge density limit.
- Results are presented from probe measurements at the outboard midplane scrape-off layer region of TCV current scan experiments. It is shown that with decreasing plasma current, or increasing magnetic connection length, the radial particle density profile becomes broader and the fluctuation levels and turbulence driven radial transport increases. This strongly indicates that plasma fluctuations and radial transport increases with plasma collisionality. Such collisionality dependence is consistent with a recent theory for radial blob motion, which suggests that filamentary structures become electrically disconnected from the target sheaths at large collisionality and thus experience less sheath dissipation. This increases the radial convective transport and is likely linked to the discharge density limit. (en)
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Title
| - Collisionality dependent transport in TCV SOL plasmas
- Collisionality dependent transport in TCV SOL plasmas (en)
- Radiální transport v závislosti na srážkovosti v okrajovém plazmatu tokamaku TCV (cs)
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skos:prefLabel
| - Collisionality dependent transport in TCV SOL plasmas
- Collisionality dependent transport in TCV SOL plasmas (en)
- Radiální transport v závislosti na srážkovosti v okrajovém plazmatu tokamaku TCV (cs)
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skos:notation
| - RIV/61389021:_____/07:00094134!RIV08-AV0-61389021
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61389021:_____/07:00094134
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - tokamak; plasma; scrape-off layer; turbulence; interchange instability (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...v/mistoKonaniAkce
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http://linked.open...i/riv/mistoVydani
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http://linked.open...i/riv/nazevZdroje
| - EPS Europhysics Conference Abstracts – Contributed papers
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
| - Horáček, Jan
- Naulin, V.
- Nielsen, A. H.
- Pitts, R. A.
- Rasmussen, J. J.
- Garcia, E. O.
- Madsen, J.
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http://linked.open...vavai/riv/typAkce
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http://linked.open.../riv/zahajeniAkce
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http://linked.open...n/vavai/riv/zamer
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number of pages
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http://purl.org/ne...btex#hasPublisher
| - European Physical Society
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https://schema.org/isbn
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