High speed materials sorting using X-ray fluorescence

Details High speed materials sorting using X-ray fluorescence High speed materials sorting using X-ray fluorescence

2011-07-12

2011-07-12

Kiknadze, Irakli (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Fluorescence

C378S044000, C378S057000

Reexamination Certificate

active

07978814

ABSTRACT:
A system and process for classifying a piece of material of unknown composition at high speeds, where the system connected to a power supply. The piece is irradiated with first x-rays from an x-ray source, causing the piece to fluoresce x-rays. The fluoresced x-rays are detected with an x-ray detector, and the piece of material is classified from the detected fluoresced x-rays. Detecting and classifying may be cumulatively performed in less than one second. An x-ray fluorescence spectrum of the piece of material may be determined from the detected fluoresced x-rays, and the detection of the fluoresced x-rays may be conditioned such that accurate determination of the x-ray fluorescence spectrum is not significantly compromised, slowed or complicated by extraneous x-rays. The piece of material may be classified by recognizing the spectral pattern of the determined x-ray fluorescence spectrum. The piece of material may be flattened prior to irradiation and detection. The x-ray source may irradiate the first x-rays at a high intensity, and the x-ray source may be an x-ray tube.

REFERENCES:
patent: 5314072 (1994-05-01), Frankel et al.
patent: 5339962 (1994-08-01), Sommer et al.

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