Method and apparatus for measuring the distribution of radioacti

Details Method and apparatus for measuring the distribution of radioacti Method and apparatus for measuring the distribution of radioacti

1986-03-05

1988-10-11

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

2503581, 2503601, 250393, 250394, 250395, G01T 2308

Patent

active

047773677

ABSTRACT:
A .gamma. ray emitted from a reference radioactive ray source is radiated from outside to a solid radioactive waste. The radioactive intensity of the .gamma. ray emitted from the solid radioactive waste is measured during the radiation of the .gamma. ray. The radioactive intensity to be measured is discriminated into the first radiation intensity based on the reference radioactive ray source and the second radiation intensity based on the radioactive nuclide of the solid radioactive waste. A radiation absorption coefficient of the solid radioactive waste is determined based on the first radiation intensity. The distribution of radioactivity of the solid radioactive waste is determined based on the radiation absorption coefficient and the second radiation intensity.

REFERENCES:
patent: 3581090 (1971-05-01), Brown
patent: 4371977 (1983-02-01), Jenkins, III et al.
patent: 4591720 (1986-05-01), Fuji et al.
L. V. East, E. R. Martin, T. L. Atwell, R. H. Augustson and H. O. Manlove, "Automated Nondestructive Assay Instrumentation for Nuclear Materials Safeguards" IEEE Transactions on Nuclear Science, vol. NS-22 (Feb. 1975) pp. 739-743.

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