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TJ-II:Spectroscopy: Difference between revisions
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== VUV spectroscopy == | == VUV spectroscopy == | ||
A vacuum ultraviolet spectrometer has been operated on TJ-II since 1999. It is an f/10.4 1 m normal-incidence vacuum spectrometer equipped with interchangeable 1200 and 3600 lines mm<sup>-1</sup> gratings and a back-illuminated CCD camera with 400 | A vacuum ultraviolet spectrometer has been operated on TJ-II since 1999. It is an f/10.4 1 m normal-incidence vacuum spectrometer equipped with interchangeable 1200 and 3600 lines mm<sup>-1</sup> gratings and a back-illuminated CCD camera with 400 × 1340 pixels (20 × 20 μm<sup>2</sup>). The instrument covers the wavelength range from ~20 to ~300 nm. It has been used to perform spectral surveys (identify and follow the evolution of plasma impurities), to obtain impurity ion temperatures, and to perform specialized studies (e.g. study fast oxygen ions present in plasmas during the neutral beam injection heating phase). | ||
<ref>[http://dx.doi.org/10.1209/epl/i2003-00476-x K.J. McCarthy, B. Zurro, R. Balbín, A. Baciero, J. Herranz, and I. Pastor, Europhys. Lett. '''63''' (2003) 49]</ref> | <ref>[http://dx.doi.org/10.1209/epl/i2003-00476-x K.J. McCarthy, B. Zurro, R. Balbín, A. Baciero, J. Herranz, and I. Pastor, ''Results of an experiment relating apparent Doppler ion temperatures with non-thermal velocities in hot-fusion plasmas'', Europhys. Lett. '''63''' (2003) 49]</ref> | ||
<ref>[http://www.new.ans.org/store/j_548 K.J. McCarthy, M. A. Ochando, F. Medina, B. Zurro, C. Hidalgo, M. A. Pedrosa, I. Pastor, J. Herranz and A. Baciero, Fusion Sci. & Tech. '''46''', 129-134 (2004)]</ref> | <ref>[http://www.new.ans.org/store/j_548 K.J. McCarthy, M. A. Ochando, F. Medina, B. Zurro, C. Hidalgo, M. A. Pedrosa, I. Pastor, J. Herranz and A. Baciero, ''A First Study of Impurity Behavior During Externally Induced Radial Electric Fields in the TJ-II Stellarator'', Fusion Sci. & Tech. '''46''', 129-134 (2004)]</ref> | ||
<ref>[http://dx.doi.org/10.1088/0953-4075/43/14/144020 K.J. McCarthy, V. Tribaldos, J. Arévalo, and M. Liniers, J. Physics B: Atomic, Molecular and Optical Physics '''43''' (2010) 144020]</ref> | <ref>[http://dx.doi.org/10.1088/0953-4075/43/14/144020 K.J. McCarthy, V. Tribaldos, J. Arévalo, and M. Liniers, ''The detection of fast oxygen ions in neutral beam-heated plasmas of the TJ-II stellarator using spectroscopy methods'', J. Physics B: Atomic, Molecular and Optical Physics '''43''' (2010) 144020]</ref> | ||
== Charge exchange recombination spectroscopy == | == Charge exchange recombination spectroscopy == | ||