Method and apparatus for measuring radon in the ground

Details Method and apparatus for measuring radon in the ground Method and apparatus for measuring radon in the ground

1981-09-30

1984-01-17

Howell, Janice A.

Radiant energy

Geological testing or irradiation

2504741, G01V 500, G01N 500

Patent

active

044265751

ABSTRACT:
The invention relates to a method of measuring the concentration of radon and radon daughters in the ground, particularly at great depth and/or below the ground-water level. In accordance with the invention a detector is freely suspended from a wire and placed in a container intended for collecting gas rising up from the ground. The container is buried at a desired depth beneath the surface of the ground and the detector is exposed to the gas in the container over a given period of time. Subsequent to this exposure period, the detector is drawn up by means of the wire, together with a sleeve, protecting the detector from contact with surrounding ground, through the roof of the container and up through the ground, to a location so selected that the registered contents of radon and radon daughters can then be determined on the basis of the data registered on the detector. The invention also relates to preferred apparatus for carrying out the method.

REFERENCES:
patent: 3665194 (1972-05-01), Alter et al.
patent: 4179614 (1979-12-01), Felice et al.
patent: 4186303 (1980-01-01), Smith et al.
patent: 4297574 (1981-10-01), Card et al.

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