• Infrared and Laser Engineering
  • Vol. 32, Issue 5, 539 (2003)
[in Chinese]1、*, [in Chinese]2, [in Chinese]1, and [in Chinese]2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: Cite this Article
    [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Numerical calculation for the 3D electrostatic field distribution of tube[J]. Infrared and Laser Engineering, 2003, 32(5): 539 Copy Citation Text show less


    Multi-grid method is used to solve the 3D electrostatic field distribution problem. The results to calculate concentric spherical system and len of bi-cylinder-cathode indicate that computational accuracy is 10-3~10-4. Comparing the two results in view of computational efficiency and computational accuracy , it appears that MGM is superior to FDM in solving electrostatic field distribution for the electron optics problem and it can greatly improve the computational efficiency of field distribution. A firm ground is provided for the design of non-rotation symmetry tube.