Radiant energy – Geological testing or irradiation – With sampling
Patent
1991-05-01
1992-07-07
Howell, Janice A.
Radiant energy
Geological testing or irradiation
With sampling
250253, G01T 100
Patent
active
051285401
ABSTRACT:
A gamma radiation compensated radon measurement system includes a housing and cooperating tube assembly that define a first, larger sensing volume and second, smaller sensing volume, each of which includes an electrically charged electret. When in its operative configuration, the first and second volumes are in communication with one another so that both volumes are exposed to the same radon concentration as well as the same gamma radiation. A partition separates the two sensing volumes so that ions formed in one sensing volume do not enter the other sensing volume. The two electrets are exposed to their respective sensing volumes to accumulate ions at different rates determined by the design characteristics of the two sensing volumes. The response characteristic of each electret/sensing volume combination is mathematically modelled and the radon and/or gamma concentration is be determined by simultaneously solving the characteristic equations for each electret/sensing volume combination.
REFERENCES:
patent: 4800272 (1989-01-01), Harley et al.
patent: 4853536 (1989-08-01), Dempsey et al.
patent: 4926053 (1990-05-01), Dempsey et al.
patent: 4992658 (1991-02-01), Ramsey, Jr.
patent: 5008540 (1991-04-01), Dempsey
Guggenheim, S. F., et al., "A Time-Integrating Environmental Radon Daughter Monitor", Health Phys., vol. 36, pp. 452-455, Pergamon Press Ltd., 1979, Great Britian.
Kotrappa et al., "A Practical E-PERM.TM. (Electret Passive Environmental Radon Monitor) System for Indoor .sup.222 Rn Measurement", Health Physics, Apr., 1990, pp. 461-467.
Kotrappa et al., "An Electret Passive Environmental .sup.222 Rn Monitor Based on Ionization Measurement", Health Physics, Jan. 1988, pp. 47-56.
Hanig Richard
Howell Janice A.
Rad Elec Inc.
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