Parallel-beam X-ray optics for measuring asbestos

Details Parallel-beam X-ray optics for measuring asbestos Parallel-beam X-ray optics for measuring asbestos

1975-09-05

1976-11-02

Church, Craig E.

Radiant energy

Coded record and readers; invisible radiant energy type

250273, G01N 2320

Patent

active

039899446

ABSTRACT:
A system for identifying chrysotile asbestos as well as other asbestiform bers in air pollution samples which comprises a collimated x-ray beam which is incident on parallel aligned asbestos fibers. Diffracted x-rays are detected by a proportional counter set at the diffraction line position for the (002) plane. Background intensity may be detected by a second counter set above the axis, or the sample may be rotated 90.degree. and the one detector used to detect diffracted and background x-rays.

REFERENCES:
patent: 2750512 (1956-06-01), Meloy
patent: 3100261 (1963-08-01), Bigelow
patent: 3309518 (1967-03-01), Weiss
patent: 3596092 (1971-07-01), Marjoram
patent: 3855470 (1974-12-01), Sahores

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