Method for direct measurement of beta-ray absorbed dose rate and

Details Method for direct measurement of beta-ray absorbed dose rate and Method for direct measurement of beta-ray absorbed dose rate and

1976-10-06

1978-07-18

Dixon, Harold A.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250328, 250336, G01T 120

Patent

active

041017692

ABSTRACT:
A method and an instrument are, herein, disclosed for measuring the absorbed dose rate of beta-ray in sites of the human body. The instrument of this invention consists of a thin scintillator, a linear amplifier, a pulse selector having disposed in parallel therein a plurality of pulse height selection mechanisms for selectively setting the lower and upper limits of pulse height discrimination according to an epidermal thickness of human tissue, and a dose rate indicator. The method and the apparatus of this invention are characterized by making the relationship between the counting rate per fluence rate and the maximum energy of beta-ray equal to the relationship between the absorbed dose rate per fluence rate and the maximum energy of beta-ray, and therefore, the absorbed dose rate can be measured independent of the energy of beta-ray.

REFERENCES:
patent: 2943199 (1960-06-01), Konneker
patent: 3089032 (1963-05-01), Gouplil et al.
patent: 3610928 (1971-10-01), Thomas
patent: 3646347 (1972-02-01), Farmer et al.

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