[formula omitted] spatial profiles from Bremsstrahlung emission in the near infrared spectral region

F. Orsitto, M.R. Belforte, A. Brusadin, E. Giovannozzi, D. Pacella, M.J. May

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Abstract

Measurements of plasma radiation in the infrared (IR) BREM_IR range [formula omitted] [formula omitted] at 16 horizontal lines of sight intersecting the central vertical chord of the [Frascati Tokamak Upgrade (FTU) [formula omitted] [formula omitted] [formula omitted]], from [formula omitted] below, to [formula omitted] above the equatorial plane, are performed using the detection system of the Thomson scattering apparatus [F. Orsitto et al., Appl. Opt. 34, 2712 (1995)] (TS). The measured BREM_IR intensity is equal [formula omitted] where 〈〉 means line average. For determining the [formula omitted] the Gaunt factor (G) is needed, and the Born–Elwert formula is used. The [formula omitted] spatial profiles are determined using the plasma temperature [formula omitted] and density [formula omitted] measured by the TS, DCN interferometer, and Abel inverted intensity profiles. [formula omitted] versus time behavior in FTU discharges is presented for krypton injection experiments aimed to investigate the particle confinement behavior during strong injection of impurities. © 1999, American Institute of Physics. All rights reserved.
Original languageEnglish
Pages (from-to)925 - 927
Number of pages3
JournalReview of Scientific Instruments
Volume70
Issue number1
DOIs
Publication statusPublished - 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Orsitto, F., Belforte, M. R., Brusadin, A., Giovannozzi, E., Pacella, D., & May, M. J. (1999). [formula omitted] spatial profiles from Bremsstrahlung emission in the near infrared spectral region. Review of Scientific Instruments, 70(1), 925 - 927. https://doi.org/10.1063/1.1149462