X-ray fluorescence detector

Details X-ray fluorescence detector X-ray fluorescence detector

1993-10-25

1995-10-24

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Fluorescence

378 44, 378 50, G01N 23223

Patent

active

054616549

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 absorption of the covering layer over the target element, without a priori knowledge of the concentration of 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. The detector will, in a rapid, non-destructive manner, provide information as to the depth that the lead paint is beneath the surface. This information is of use to those who mitigate a lead-paint infested area.

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

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