【摘要】：理論上提出了平頂正弦相位板星冕儀,該星冕儀可作為正弦相位板星冕儀和六平臺相位板星冕儀的推廣形式。平頂正弦相位板具有角向的雙周期結構,每個周期中都包含兩個平頂?shù)陌胝覅^(qū)域和一個平坦區(qū)域。解析地推導了該相位板的寬帶工作條件。在這個寬帶工作條件的一端,這個相位板可以退化為正弦相位板;在另一端,這個相位板可以退化為六平臺相位板。數(shù)值計算結果表明,平頂正弦相位板星冕儀與這兩種特例情況一樣,具有良好的消色差能力。
[Abstract]:In this paper, a flat-top sinusoidal phase plate coronation instrument is proposed, which can be used as an extension of the sine phase plate coronation instrument and the six-platform phase plate coronation instrument. The flat top sinusoidal phase plate has a biperiodic structure with an angular direction. Each period consists of two half-sinusoidal regions with flat top and a flat region. The broadband working conditions of the phase plate are derived analytically. At one end of the broadband working condition, the phase plate can degenerate into a sinusoidal phase plate, and at the other end, the phase plate can degenerate into a six-platform phase plate. The numerical results show that the flat-top sinusoidal phase plate coronation instrument has good achromatic ability as in these two special cases.
【作者單位】： 上海大學理學院物理系;
【分類號】：P111.4
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本文編號：2357621