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TJ-II:Reflectometry: Difference between revisions
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Since February 2009, the frequency hopping system is in operation in oblique incidence (''Doppler'' reflectometry, [[TJ-II:Sectors|sector]] C6) | Since February 2009, the frequency hopping system is in operation in oblique incidence (''Doppler'' reflectometry, [[TJ-II:Sectors|sector]] C6) | ||
<ref>[http://link.aip.org/link/?RSINAK/80/073502/1 T. Happel, T. Estrada, E. Blanco, V. Tribaldos, A. Cappa, and A. Bustos, Rev. Sci. Instrum. '''80''' (2009) 073502]</ref> | <ref>[http://link.aip.org/link/?RSINAK/80/073502/1 T. Happel, T. Estrada, E. Blanco, V. Tribaldos, A. Cappa, and A. Bustos, Rev. Sci. Instrum. '''80''' (2009) 073502]</ref> | ||
, measuring plasma density fluctuation velocities and their wave number spectra. The system is able to measure in a radial range of about ρ = 0.6 - 0.9 (ρ = r/a is the [[effective plasma radius]]) and the perpendicular wavenumber can be selected between 3 and 15 cm<sup>-1</sup>. | , measuring plasma density fluctuation velocities and their wave number spectra. The system is able to measure in a radial range of about ρ = 0.6 - 0.9 (ρ = r/a is the [[effective plasma radius]]) and the perpendicular wavenumber can be selected between ''k''<sub>⊥</sub> = 3 and 15 cm<sup>-1</sup>. | ||
The system consists of a circular choked-corrugated antenna | The system consists of a circular choked-corrugated antenna | ||