• Xu Wei

      Articles written in Journal of Astrophysics and Astronomy

    • Measurement of Plasma Ion Temperature and Flow Velocity from Chord-Averaged Emission Line Profile

      Xu Wei

      More Details Abstract Fulltext PDF

      The distinction between Doppler broadening and Doppler shift has been analysed, the differences between Gaussian fitting and the distribution of chord-integral line shape have also been discussed. Local ion temperature and flow velocity have been derived from the chord-averaged emission line profile by a chosen-point Gaussian fitting technique.

    • Analysis of 𝐻𝛼(𝐷𝛼) Line Shape

      Xu Wei Li Yan

      More Details Abstract Fulltext PDF

      The particles energy distribution is derived directly from the 𝐻𝛼(𝐷𝛼) line shape, which is measured by two sets of OMA. The dissociative excitation of molecular is dominating when the local electron temperature is > 10 eV. The 𝐷𝛼 line shape is also simulated by the Monte–Carlo method, the molecular dissociation contributes to 57% neutral atoms and 53% emission intensity in front of the limiter, and 85% neutral atoms and 82% emission intensity in front of the wall. The processes of atoms and molecules influence on the energy balance is discussed in SOL, the power loss from molecular dissociation is 6 × 104 kW at SOL.

  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

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