Photomultiplier tube having a metal-made sidewall

Details Photomultiplier tube having a metal-made sidewall Photomultiplier tube having a metal-made sidewall

1993-03-09

1996-04-02

O'Shea, Sandra L.

Electric lamp and discharge devices

With temperature modifier

For filament or heated cathode

313103CM, 313532, 313544, H01J 4014

Patent

active

055043860

ABSTRACT:
A photomultiplier tube which obtains a large decrease in manufacture time, prevents generation of gas within the envelope, prevents deterioration of electron multiplier assembly (dynodes), and greatly reduces noise. The envelope includes an all-metal cylindrical sidewall, at one end of which is an annular, flange-shaped, metal sealing area. The stem of the photomultiplier tube has another annular flange-shaped, metal sealing area. These two sealing areas are welded together. Also a metal exhaust tube is connected to the stem by resistance welding. The metal exhaust tube is severed using pinch-off seal at the final stage of the photomultiplier tube production.

REFERENCES:
patent: 3567948 (1969-04-01), Oke et al.
patent: 3757151 (1973-09-01), Ace
patent: 3868524 (1975-02-01), Stahl
patent: 4376246 (1983-03-01), Butterwick
patent: 4431943 (1984-02-01), Faulkner et al.
patent: 4554481 (1985-11-01), Faulkner et al.
patent: 4998037 (1991-03-01), Kerkhof et al.
patent: 5077504 (1991-12-01), Helvy
patent: 5120949 (1992-06-01), Tomasetti

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