Evidence of inhomogeneous thermal transport in RTP

Autor:	R.W. Polman, Giuseppe Gorini, G. M. D. Hogeweij, F. De Luca, M. Peters, Jr. D.F. Da Cruz, C. C. Chu, F. J. Pijper, A.A.M. Oomens, N.J. Lopes Cardozo, A. Jacchia, P. Mantica
Jazyk:	angličtina
Rok vydání:	1996
Předmět:	Nuclear and High Energy Physics Materials science Tokamak business.industry Thomson scattering Sawtooth wave Plasma Electron Condensed Matter Physics Thermal diffusivity law.invention Optics Physics::Plasma Physics law Plasma diagnostics Atomic physics business Current density
Zdroj:	ResearcherID Nuclear Fusion, 36, 535-544
DOI:	10.1088/0029-5515/36/5/i01
Popis:	There are strong indications that the radial electron thermal diffusivity is not a smooth function of the radius, but shows strong local variations. To investigate this irregularity systematically, a number of dedicated experiments have been carried out in the RTP tokamak: intense central heating, pellet ablation experiments, perturbative transport studies and steady state off-axis heating. The crucial diagnostic in these experiments is the Thomson scattering system, with a radial resolution of 1% of the minor radius. In sawtoothing plasmas a transport barrier has been identified near the sawtooth inversion radius. With steady state off-axis heating, hollow current density profiles have been sustained, and the region of reversed magnetic shear is characterized by very low thermal transport.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5507a6ee2898b08db5f0a923ff65af9 https://doi.org/10.1088/0029-5515/36/5/i01 Zobrazit plný text záznamu