Low energy ion trap

Details Low energy ion trap Low energy ion trap

1990-05-16

1991-07-02

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313432, 328233, H01J 2984

Patent

active

050288377

ABSTRACT:
An ion trap for an electron beam generator consists of at least two electrically conductive elements which are in the form of a sector of a cylinder the elements being spaced apart from each other and together form a cylindrical form. Each element has end plates and a number of fins extending inwardly to the center of the cylindrical form. A recess in the form of a sector of a circle is located in each end plate and each fin adjacent to the center of the cylindrical form. These recesses form a central bore through which an electron beam from an electron gun travels, the electron beam and central bore being essentially of the same diameter. Each elements is attached to an outer envelope by an insulating element and a conductive lead is electrically connected to each element to maintain that element at a predetermined potential which deflects positive ions travelling along the beam path.

REFERENCES:
patent: 3586901 (1971-06-01), Findeisen
patent: 3886399 (1975-05-01), Symons
patent: 4625150 (1986-11-01), Rand
patent: 4720832 (1988-01-01), Deki
patent: 4743794 (1988-05-01), Van Den Broek et al.

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