Method and device for the deflection of a beam

Details Method and device for the deflection of a beam Method and device for the deflection of a beam

1990-09-04

1991-08-06

Berman, Jack I.

Radiant energy

With charged particle beam deflection or focussing

Magnetic lens

250346R, 250398, 2504923, B23K 1500, H01J 328

Patent

active

050380443

ABSTRACT:
In order to utilize a magnet arrangement having a magnetic flux density field for beam guidance in the deflection of a beam of monopolar charged particles, regions of the field having curved field lines, are modified to significantly linearize the field lines in the area of the beam. An additional flux density field is superimposed on the primary flux density field so that the field lines interact in an harmonic synthesis and so that the field lines of the resulting field in the region of interest, extend linearly. In this way, the deflection force on the beam is essentially independent of the beam position in the field direction and in the linearized region.

REFERENCES:
patent: 3420977 (1969-01-01), Hanks et al.
patent: 4064352 (1977-12-01), Mann
patent: 4464573 (1984-08-01), Dalgolish
patent: 4804852 (1989-02-01), Rose et al.

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