X-ray fluorescence detector

Details X-ray fluorescence detector X-ray fluorescence detector

1993-07-23

1995-03-07

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Fluorescence

378 44, 378 50, G01N 23223

Patent

active

053965299

ABSTRACT:
A new type of x-ray fluorescence detector is disclosed that utilizes the measured intensities of fluorescent L.sub..alpha. and L.sub..beta. x-rays, or K.sub..alpha. and K.sub..beta. x-rays of a target element, to determine the absolute concentration of the target element, independent of either the thickness or the nature of covering layers over the target element. The detector uses a source of initiating photons whose energy is in a specific range, a detector of the characteristic lead L or K x-rays with sufficient energy resolution to measure the intensities of the L.sub..alpha. and L.sub..beta. rays separately, or K.sub..alpha. and K.sub..beta. x-ray separately, a signal processor, and an appropriate read-out. The detector will improve the rapidity and accuracy of measurements, especially that of lead in paint and in bone, in a very cost-effective manner.

REFERENCES:
patent: 4845729 (1989-07-01), Rosen et al.
patent: 5274688 (1993-12-01), Grodzins

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