Radiometric methods and means

Details Radiometric methods and means Radiometric methods and means

1980-11-28

1984-02-28

Howell, Janice A.

Radiant energy

Geological testing or irradiation

With sampling

2503591, 2505151, G01V 500, G01N 2300, G21C 1100

Patent

active

044343655

ABSTRACT:
A method of and apparatus for measuring radio-active emissions from moving radio-active material.
Use is made of a radiation detector, a first radiation shield of a first material which shields the detector, and a second radiation shield which is located between at least a portion of the first shield and the detector.
The material of the second shield is inherently less contaminated and emits secondary excitation radiation of lower energy than the first material.

REFERENCES:
patent: 3996471 (1976-12-01), Fletcher et al.
patent: 4029961 (1977-06-01), Lohr et al.
patent: 4081689 (1978-03-01), Reiss
patent: 4224517 (1980-09-01), Lubecki et al.
patent: 4275298 (1981-06-01), Wykes et al.
patent: 4293767 (1981-10-01), Fischer et al.
patent: 4300043 (1981-11-01), Robbins

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