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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

Publication de 4  numéros par an

ISSN Imprimer: 1093-3611

ISSN En ligne: 1940-4360

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00005 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

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CHARACTERIZATION OF COMPLEX DYNAMICAL REGIMES, UP TO SPATIO-TEMPORAL CHAOS, IN PLASMAS

Volume 2, Numéro 1, 1998, pp. 103-115
DOI: 10.1615/HighTempMatProc.v2.i1.80
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RÉSUMÉ

Characterizing space-time fluctuations is of first importance to understand the non linear phenomena involved in unstable or turbulent fluid or plasma flows.
Along with the great development observed during the last years in non linear dynamics, new methods in data processing have been proposed.
Among these methods the biorthogonal decomposition (BD), enabling to reduce space-time data with the maximum efficiency to a finite set of separate modes is a particularly convenient tool. The eigenmodes come out from the numerical analysis and are not imposed from outside as in the Fourier decomposition.
Making a partial reconstruction from the weighted sum of spatial and temporal eigenfunctions obtained gives a mean to separate coherent structures from background stochastic fluctuations.
After a short description of the BD we present two illustrative examples. Both of them are devoted to the characterization of transitions from regular to spatio-temporal chaos or turbulence in laboratory plasmas.

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