{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:56:32Z","timestamp":1753872992801,"version":"3.41.2"},"reference-count":8,"publisher":"AIP Publishing","issue":"2","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2011,2,1]]},"abstract":"<jats:p>A frequency scanning O-mode reflectometer was used for studies of plasma density oscillations during local Alfv\u00e9n wave (LAW) excitation in the Tokamak Chauffage Alfv\u00e9n Br\u00e9silien (TCABR) at the frequency fA = 5 MHz. It was found that the spectrum of the reflectometer output signal, which consists mainly of the \u201cbeat\u201d frequency fB, is modified by the LAW excitation, and two additional frequency peaks appear, which are symmetrical in relation to the LAW excitation frequency f = fA \u00b1 fB. 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.<\/jats:p>","DOI":"10.1063\/1.3541756","type":"journal-article","created":{"date-parts":[[2011,2,22]],"date-time":"2011-02-22T23:27:33Z","timestamp":1298417253000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Registration of Alfv\u00e9n resonances in TCABR tokamak by the scanning reflectometer at sideband frequencies"],"prefix":"10.1063","volume":"82","author":[{"given":"L. F.","family":"Ruchko","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo 1 Instituto de F\u00edsica, , S\u00e3o Paulo, Brazil"}]},{"given":"A. G.","family":"Elfimov","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo 1 Instituto de F\u00edsica, , S\u00e3o Paulo, Brazil"}]},{"given":"C. M.","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo 1 Instituto de F\u00edsica, , S\u00e3o Paulo, Brazil"}]},{"given":"J. I.","family":"Elizondo","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo 1 Instituto de F\u00edsica, , S\u00e3o Paulo, Brazil"}]},{"given":"E.","family":"Sanada","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo 1 Instituto de F\u00edsica, , S\u00e3o Paulo, Brazil"}]},{"given":"R. M. O.","family":"Galv\u00e3o","sequence":"additional","affiliation":[{"name":"CBPF 2 , Centro Brasileiro de Pesquisas F\u00edsicas, Rio de Janeiro, Brazil"}]},{"given":"M. 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