Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2008-01-22
2008-01-22
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S256000, C250S253000, C250S581000, C250S301000
Reexamination Certificate
active
11312841
ABSTRACT:
A radiation detector operating at high temperatures is shown comprising a LuAP scintillating material for producing light when excited by incident radiation, a photocathode, and an electron multiplier. The photocathode is deposited directly onto the surface of the scintillating material that is oriented toward the electron multiplier. In a preferred embodiment, a metal flange is hermetically sealed to the scintillating material and this is fusion welded to the electron multiplier to create a vacuum envelope. This invention is particularly useful in high temperature noisy environments such as downhole operations to detect radiation within a well hole.
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Groves Joel L.
Liberman Art
Simonetti John
Stoller Christian
Ziegler Wolfgang
Castano Jaime
Gaudier Dale
Green Yara B
Porta David
Singh Karan
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