Ion cyclotron range of frequencies mode conversion electron heating in deuterium–hydrogen plasmas in the Alcator C-Mod tokamak

Autor:	D. A. Mossessian, Miklos Porkolab, S.J. Wukitch, G. Schilling, Earl Marmar, Yu-Ming Lin, E. Nelson-Melby, P. E. Phillips, P.T. Bonoli, John Wright, S.M. Wolfe
Rok vydání:	2003
Předmět:	Tokamak Materials science Cyclotron Magnetic confinement fusion Electron Condensed Matter Physics law.invention Ion Nuclear Energy and Engineering Alcator C-Mod Physics::Plasma Physics law Electron temperature Atomic physics Ion cyclotron resonance
Zdroj:	Plasma Physics and Controlled Fusion. 45:1013-1026
ISSN:	1361-6587 0741-3335
Popis:	Localized direct electron heating (EH) by mode-converted (MC) ion cyclotron range of frequencies (ICRF) waves in D(H) tokamak plasmas has been clearly observed for the first time in Alcator C-Mod. Both on- and off-axis (high field side) mode conversion EH (MCEH) have been observed. The MCEH profile was obtained from a break-in-slope analysis of electron temperature signals in the presence of radio frequency shut-off. The temperature was measured by a 32-channel high spatial resolution (less than or equal to7 mm) 2nd harmonic heterodyne electron cyclotron emission system. The experimental profiles were compared with the predictions from a toroidal full-wave ICRF code TORIC. Using the hydrogen concentration measured by a high-resolution optical spectrometer, TORIC predictions were shown qualitatively in agreement with the experimental results for both on- and off-axis MC cases. From the simulations, the EH from MC ion cyclotron wave and ion Bernstein wave is examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38df64bef85f7fd748f9ed0c5168585a https://doi.org/10.1088/0741-3335/45/6/313 Zobrazit plný text záznamu