Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1988-11-07
1990-04-24
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250361R, G01T 120
Patent
active
049202693
ABSTRACT:
A solution which increases the efficiency of radon extraction from either dry or moist charcoal samples is disclosed. The addition of low molecular weight organic solvents such as methanol or ethanol to liquid scintillation counting solution increases radon extraction from 20-500% over known counting solutions. The increased efficiency appears to occur from increased penetration of the charcoal by the low molecular weight solvent which dissolves the radon gas and the subsequent diffusion of the low molecular weight solvent out of the charcoal and into the liquid scintillation counting solution.
REFERENCES:
patent: 4812648 (1989-03-01), Perlman
A new Method for the Determination of Radon in Soil Air by the "Open Vial" and Integral Counting with a Liquid Scintillation Counter, Horjuchi and Murakami, Journal or Radio Analytical Chemistry, vol. 80 Nos. 1-2 (1983).
Desorbtion of Radon From Activated Carbon into a Liquid Scintillator, Prichard & Malien, Analytical Chemistry, 1983 pp. 155-157.
Brandeis University
Eisenberg J.
Hannaher Constantine
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