Wire-free, dual-mode calibration instrument for high energy...

Details Wire-free, dual-mode calibration instrument for high energy... Wire-free, dual-mode calibration instrument for high energy...

2007-01-26

2008-12-30

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

C250S385100

Reexamination Certificate

active

07470912

ABSTRACT:
An instrument for checking quality of therapeutic x-ray and electron radiation provides modes optimized for both electrons and for photons obtained by physically flipping the unit to interpose the necessary build-up material between the radiation beam and contained detectors. The invention provides an improved method of constructing ionization detectors for improved energy discrimination using such detectors and wire-free operation.

REFERENCES:
patent: 3703638 (1972-11-01), Allemand et al.
patent: 4479059 (1984-10-01), Morris et al.
patent: 5952646 (1999-09-01), Spartiotis et al.
patent: 2005/0167583 (2005-08-01), Miller et al.
patent: 2005/0173629 (2005-08-01), Miller et al.

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