A New Method of Astigmatic Compensation
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概要
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A new astigmatic compensator is employed in permanent magnetic excited objective (Hitachi HS - 5). The compensator is a nickel plated copper cylinder with the slitted bead. The strength of the asymmetric magnetic field in the compensator is controlled by the thickness of plated nickel.<BR>To find quickly the compensating condition, the vector representation of the astigmatism is used. The compensating condition is. practically unchangeable even when the variaton of accelerating voltage is ±6 % at 50kV.
- 公益社団法人 日本顕微鏡学会の論文
公益社団法人 日本顕微鏡学会 | 論文
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