| Registration of Alfvén resonances in TCABR tokamak by the scanning reflectometer at sideband frequencies. | |
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MedLine Citation:
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PMID: 21361592 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A frequency scanning O-mode reflectometer was used for studies of plasma density oscillations during local Alfvén wave (LAW) excitation in the Tokamak Chauffage Alfvén Brésilien (TCABR) at the frequency f(A) = 5 MHz. It was found that the spectrum of the reflectometer output signal, which consists mainly of the "beat" frequency f(B), is modified by the LAW excitation, and two additional frequency peaks appear, which are symmetrical in relation to the LAW excitation frequency f = f(A) ± f(B). This result opens the possibility to improve the efficiency of studying the LAW induced density oscillations. The symmetry of these frequency peaks yields the possibility of finding the microwave frequency at which the reflectometer cutoff layer coincides with radial position of the LAW resonance zone in the TCABR tokamak. |
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Authors:
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L F Ruchko; A G Elfimov; C M Teixeira; J I Elizondo; E Sanada; R M O Galvão; M E Manso; A Silva |
Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: The Review of scientific instruments Volume: 82 ISSN: 1089-7623 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-3-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0405571 Medline TA: Rev Sci Instrum Country: - |
Other Details:
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Languages: ENG Pagination: 023504 Citation Subset: - |
Affiliation:
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Instituto de Física, Universidade de São Paulo, São Paulo, BrazilCBPF, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, BrazilAssociação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear - Laboratório Associado, Instituto Superior Técnico, Lisboa, Portugal. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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