Ionization chamber dosimeter

Details Ionization chamber dosimeter Ionization chamber dosimeter

1990-04-16

1991-10-29

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

427 97, 427241, H01J 4704

Patent

active

050612166

ABSTRACT:
A method for fabricating an ion chamber dosimeter collecting array of the type utilizing plural discrete elements formed on a uniform collecting surface which includes forming a thin insulating layer over an aperture in a frame having surfaces, forming a predetermined pattern of through holes in the layer, plating both surfaces of the layer and simultaneously tilting and rotating the frame for uniform plate-through of the holes between surfaces. Aligned masking and patterned etching of the surfaces provides interconnects between the through holes and copper leads provided to external circuitry.

REFERENCES:
patent: 3359132 (1967-12-01), Wittmann
patent: 3661638 (1972-05-01), Lemecha
patent: 4124411 (1978-11-01), Meuleman et al.
patent: 4532152 (1985-07-01), Elarde
patent: 4613313 (1986-09-01), Steele
patent: 4682964 (1987-07-01), Steele et al.
patent: 4715917 (1987-12-01), Tirell et al.

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