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On the statistics of edge fluctuations: comparative study between various fusion devices
- Source :
- Plasma physics and controlled fusion, 51 (2009): 055013. doi:10.1088, info:cnr-pdr/source/autori:Sattin F.; Agostini M.; Scarin P.; Vianello N.; Cavazzana R.; Marrelli L.; Serianni G.; Zweben S.J.; Maqueda R.J.; Yagi Y.; Sakakita H.; Koguchi H.; Kiyama S.; Hirano Y.; Terry J.L./titolo:On the statistics of edge fluctuations: comparative study between various fusion devices/doi:10.1088/rivista:Plasma physics and controlled fusion (Print)/anno:2009/pagina_da:055013/pagina_a:/intervallo_pagine:055013/volume:51
- Publication Year :
- 2009
- Publisher :
- Institute of Physics, Bristol , Regno Unito, 2009.
-
Abstract
- In this paper we present a statistical study of edge fluctuations taken with the Gas Puffing Imaging (GPI) diagnostics. We carry out a comparison of GPI signal from an extensive database including four devices (two Tokamaks and two Reversed Field Pinches). The data are analyzed in terms of their statistical moments Skewness and Kurtosis, as done in [B. Labit, et al, Phys. Rev. Lett. \textbf{98}, 255002 (2007)]. The data align along parabolic curves, although different from machine to machine, with some spread around the best-fitting curve. A discussion about the meaning of the parabolic trend as well as the departure of real data from it is provided. A phenomenological model is finally provided, attempting to accomodate experimental evidence.<br />To appear in Plasma Physics and Controlled Fusion
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Plasma physics and controlled fusion, 51 (2009): 055013. doi:10.1088, info:cnr-pdr/source/autori:Sattin F.; Agostini M.; Scarin P.; Vianello N.; Cavazzana R.; Marrelli L.; Serianni G.; Zweben S.J.; Maqueda R.J.; Yagi Y.; Sakakita H.; Koguchi H.; Kiyama S.; Hirano Y.; Terry J.L./titolo:On the statistics of edge fluctuations: comparative study between various fusion devices/doi:10.1088/rivista:Plasma physics and controlled fusion (Print)/anno:2009/pagina_da:055013/pagina_a:/intervallo_pagine:055013/volume:51
- Accession number :
- edsair.doi.dedup.....d988c09706f22bf72ea83680c996cedf