Method and apparatus for providing height variation compensation

Details Method and apparatus for providing height variation compensation Method and apparatus for providing height variation compensation

1975-01-09

1976-09-21

Dixon, Harold A.

Radiant energy

Geological testing or irradiation

250272, 250358R, 250366, 250492R, G01V 500

Patent

active

039821250

ABSTRACT:
A method and apparatus for compensating for height variations in certain lear gauging applications, particularly nuclear mine detection, are disclosed. A source of monoenergetic photons and a pair of detectors are provided. One of the two detectors includes a K-edge filter, whereas the second detector does not. After processing, the outputs of the two detectors are applied to a suitable readout device. The combination of the filtered detector and unfiltered detector provide a means to compensate for any height variation of the source-detector assembly above the medium under study; thereby permitting any change in the average atomic number of that medium to be discerned.

REFERENCES:
patent: 2897371 (1959-07-01), Hasler
patent: 2997586 (1961-08-01), Scherbatskoy
patent: 3100261 (1963-08-01), Bigelow
patent: 3114832 (1963-12-01), Alvarez
patent: 3435220 (1969-03-01), Hanken
patent: 3505520 (1970-04-01), Stewart

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