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dc.titleGeneral condition for moving objective lens (MOL) with combined electrostatic and magnetic fields
dc.contributor.authorZhao, Y.
dc.contributor.authorKhursheed, A.
dc.identifier.citationZhao, Y.,Khursheed, A. (1999). General condition for moving objective lens (MOL) with combined electrostatic and magnetic fields. Optik (Jena) 110 (12) : 563-568. ScholarBank@NUS Repository.
dc.description.abstractThis paper presents a theoretical study on the Moving Objective Lens (MOL) for general focusing and deflection system with combined electrostatic and magnetic fields. A general MOL condition is derived from the paraxial ray equation instead of from conventional field expansions. Conditions are predicated for hybrid-field MOLs in which the focusing and deflection fields are of different type. A test system consisting of a magnetic with bell-shaped axial field distribution and in-lens electrostatic deflectors is used to analyze the characteristics of the hybrid-field MOL. Third order geometrical and first order chromatic aberrations are also studied in comparison with its pure-field counterpart. Based upon these results, some applications of the hybrid-field MOL concept are recommended.
dc.contributor.departmentELECTRICAL ENGINEERING
dc.description.sourcetitleOptik (Jena)
Appears in Collections:Staff Publications

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