The Effect of Air Gap Width (S) and the Ratio (P1/D2) on .Minimum Projector Focal Length (Fp)min for the Double Pole-Piece Lens- at Costant Excitation (NI)
The spherical double pole-piece electron lens i§ depend on some fact0rs : the- minimum va}ue-of projector fo·cal length (Fp)i:J,Iill • the maximum value of magnetic flux density (Bm) , the total hal[ width ,(W) o'f asyriunetrical clln'e of magnetic field dis...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2017-09-01
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| Series: | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| Online Access: | https://jih.uobaghdad.edu.iq/index.php/j/article/view/1412 |