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  • 2000-2004  (2)
  • 2001  (2)
  • PACS. 07.05.Tp Computer modeling and simulation – 02.60.Cb Numerical simulation; solution of equations – 52.70.Kz Optical (ultraviolet, visible, infrared) measurements  (2)
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  • 2000-2004  (2)
Year
  • 2001  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Design study of 3-D tomography diagnostics for spherical tokamaks (2001)
    Springer
    The European physical journal 14 (2001), S. 97-103 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 07.05.Tp Computer modeling and simulation – 02.60.Cb Numerical simulation; solution of equations – 52.70.Kz Optical (ultraviolet, visible, infrared) measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: A novel three-dimensional (3-D) tomography software has been developed for spherical tokamak (ST) plasmas with thin central coils. It enables us to measure whole 3-D annular profiles of ST plasma emissivity (line spectrum etc.) using limited number of detectors located on a sphere outside of its separatrix. The numbers and positions of detectors have been optimized for STs that contain low-n toroidal modes from n = 1 to 5. Mathematical method allowing for the removal of the thin central coil from the region of reconstruction and to reconstruct STs with single and double axes are also discussed. The shadow effect of center coil region was found to limit the reconstruction accuracy, indicating that the low-aspect ratio torus (ST) is essential to this new 3-D tomography diagnostics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170240
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Tomographic determination of plasma velocity with the use of ion Doppler spectroscopy (2001)
    Springer
    The European physical journal 17 (2001), S. 337-344 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 07.05.Tp Computer modeling and simulation – 02.60.Cb Numerical simulation; solution of equations – 52.70.Kz Optical (ultraviolet, visible, infrared) measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: An inversion method for ion Doppler shift of spectrum lines was developed for plasma velocity measurements. By reducing the problem to the vectorial Radon transform, the characteristics of plasma ion velocity distribution such as vector potential/vorticity and velocity components were computed in two-dimensional space. Computer simulation of the reconstruction of different vector potential (vector field) models gives evidence that the reconstruction errors are acceptable, and the method can surely be used for real experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170008
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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