D III-D divertor target heat flux measurements during ohmic and neutral beam heating

Autor:	M. Ali Mahdavi, L.L. Lao, W. Howl, T.W. Petrie, D. N. Hill
Rok vydání:	1988
Předmět:	Core (optical fiber) Nuclear and High Energy Physics Millisecond Materials science Nuclear magnetic resonance Heat flux Divertor Plasma Atomic physics Condensed Matter Physics Ohmic contact Neutral beam injection Beam (structure)
Zdroj:	Nuclear Fusion. 28:902-907
ISSN:	1741-4326 0029-5515
DOI:	10.1088/0029-5515/28/5/015
Popis:	Time resolved power deposition profiles on the D III-D divertor target plates have been measured for Ohmic and neutral beam injection heated plasmas using fast response infrared thermography (τ ≤ 150 μs). Giant Edge Localized Modes have been observed which punctuate quiescent periods of good H-mode confinement and deposit more than 5% of the stored energy of the core plasma on the divertor armour tiles on millisecond timescales. The heat pulse associated with these events arrives approximately 0.5 ms earlier on the outer leg of the divertor relative to the inner leg. The measured power deposition profiles are displaced relative to the separatrix intercepts on the target plates, and the peak heat fluxes are a function of core plasma density.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ea9e77d8f5d5c3ac0a624a971c9649e https://doi.org/10.1088/0029-5515/28/5/015 Zobrazit plný text záznamu