Considerations on Fringing Fields of Quadrupole Lenses
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概要
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The fringing potential distributions of electrostatic quadrupole lenses are investigated in great detail. The lenses are quadrupole singlet and doublet consisting of circular-concave electrodes with the gap between each electrode, 2γ (= π/3). The distributions are calculated numerically in cylindrical coordinate (R, ,Z). It is found that the rectangular hyperbolic equipotential is formed in the useful aperture region, the -component anyγ have negligible influences on the distributions, the R-component only has small influence on them, and the effective lens length hardly changes.
- Elsevier Scienceの論文
- 1974-04-00
Elsevier Science | 論文
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