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1.4891102.pdf | 1.77 MB | Adobe PDF | 見る/開く |
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dc.contributor.author | Ohshima, S. | en |
dc.contributor.author | Kobayashi, S. | en |
dc.contributor.author | Yamamoto, S. | en |
dc.contributor.author | Nagasaki, K. | en |
dc.contributor.author | Mizuuchi, T. | en |
dc.contributor.author | Kado, S. | en |
dc.contributor.author | Okada, H. | en |
dc.contributor.author | Minami, T. | en |
dc.contributor.author | Lee, H. Y. | en |
dc.contributor.author | Zang, L. | en |
dc.contributor.author | Kenmochi, N. | en |
dc.contributor.author | Kasajima, K. | en |
dc.contributor.author | Ohtani, Y. | en |
dc.contributor.author | Shi, N. | en |
dc.contributor.author | Nagae, Y. | en |
dc.contributor.author | Konoshima, S. | en |
dc.contributor.author | Sano, F. | en |
dc.contributor.alternative | 大島, 慎介 | ja |
dc.date.accessioned | 2014-09-03T05:11:31Z | - |
dc.date.available | 2014-09-03T05:11:31Z | - |
dc.date.issued | 2014-11 | - |
dc.identifier.issn | 0034-6748 | - |
dc.identifier.uri | http://hdl.handle.net/2433/189550 | - |
dc.description.abstract | A fluctuation analysis technique using analytic signals is proposed. Analytic signals are suitable to characterize a single mode with time-dependent amplitude and frequency, such as an MHD mode observed in fusion plasmas since the technique can evaluate amplitude and frequency at a specific moment without limitations of temporal and frequency resolutions, which is problematic in Fourier-based analyses. Moreover, a concept of instantaneous phase difference is newly introduced, and error of the evaluated phase difference and its error reduction techniques using conditional/ensemble averaging are discussed. These techniques are applied to experimental data of the beam emission spectroscopic measurement in the Heliotron J device, which demonstrates that the technique can describe nonlinear evolution of MHD instabilities. This technique is widely applicable to other diagnostics having necessity to evaluate phase difference. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | AIP Publishing | en |
dc.rights | © 2014 AIP Publishing LLC | en |
dc.title | Highly time-resolved evaluation technique of instantaneous amplitude and phase difference using analytic signals for multi-channel diagnosticsa) | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA00817730 | - |
dc.identifier.jtitle | Review of Scientific Instruments | en |
dc.identifier.volume | 85 | - |
dc.identifier.issue | 11 | - |
dc.relation.doi | 10.1063/1.4891102 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 11E814 | - |
dc.identifier.pmid | 25430379 | - |
dcterms.accessRights | open access | - |
dc.identifier.pissn | 0034-6748 | - |
dc.identifier.eissn | 1089-7623 | - |
出現コレクション: | 学術雑誌掲載論文等 |
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