JET EFDA Contributors (Including: Calderon, F. A., Dendy, R. O., Chapman, Sandra C., Webster, A. J., Alper, B. and Nicol, R. M.). (2013) Identifying low-dimensional dynamics in type-I edge-localised-mode processes in JET plasmas. Physics of Plasmas, Volume 20 (Number 4). Article number 042306. doi:10.1063/1.4802793 ISSN 1070-664X.

Research output not available from this repository.

Request-a-Copy directly from author or use local Library Get it For Me service.

Request Changes to record.

Abstract

Edge localised mode (ELM) measurements from reproducibly similar plasmas in the Joint European Torus (JET) tokamak, which differ only in their gas puffing rate, are analysed in terms of the pattern in the sequence of inter-ELM time intervals. It is found that the category of ELM defined empirically as type I—typically more regular, less frequent, and having larger amplitude than other ELM types—embraces substantially different ELMing processes. By quantifying the structure in the sequence of inter-ELM time intervals using delay time plots, we reveal transitions between distinct phase space dynamics, implying transitions between distinct underlying physical processes. The control parameter for these transitions between these different ELMing processes is the gas puffing rate.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physics of Plasmas
Publisher:	American Institute of Physics
ISSN:	1070-664X
Official Date:	2013
Dates:	Date Event 2013 Published
Volume:	Volume 20
Number:	Number 4
Page Range:	Article number 042306
DOI:	10.1063/1.4802793
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

Request changes or add full text files to a record

Repository staff actions (login required)

View Item