TJ-II:Spectroscopy: Difference between revisions
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== Toroidal rotation measurement == | == Toroidal rotation measurement == | ||
[[File:TJ-II McPherson.jpg|300px|thumb|right| | [[File:TJ-II McPherson.jpg|300px|thumb|right|The VUV spectrometer on TJ-II]] | ||
A method for measuring absolutely calibrated toroidal rotation velocities consists of simultaneously recording the emission lines from the plasma and from a calibration lamp by means of a double fiber-fiber guide. | A method for measuring absolutely calibrated toroidal rotation velocities consists of simultaneously recording the emission lines from the plasma and from a calibration lamp by means of a double fiber-fiber guide. | ||
<ref>[http://link.aip.org/link/?RSINAK/77/033506/1 D. Rapisarda et al, ''Novel passive spectroscopy system for absolutely referenced plasma rotation measurements in clean plasmas'', Rev. Sci. Instrum. '''77''' (2006) 033506]</ref> | <ref>[http://link.aip.org/link/?RSINAK/77/033506/1 D. Rapisarda et al, ''Novel passive spectroscopy system for absolutely referenced plasma rotation measurements in clean plasmas'', Rev. Sci. Instrum. '''77''' (2006) 033506]</ref> | ||