Radon daughter dosemeter
AssigneeAtomic Energy Corporation of South Africa Limited
InventorRainer Rolle
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Abstract
The invention provides a radon daughter dosemeter made up of a cyclone, a filter in a filter holder and a radiation detector spaced from the filter. The filter is arranged to filter dust and aerosol particles from air issuing from the air outlet of the cyclone, and the detector is arranged to detect radiation from dust and aerosol particles on the filter. The invention also provides a method of monitoring radiation exposure of persons; and an electrochemical etching cell for the etching of detectors used in the dosemeter.
Claims10
A radon daughter dosemeter which comprises:
- a cyclone having an air inlet, a solids outlet and an air outlet, for separating non-respirable dust and aerosol particles from air;
- a filter mounted on the cyclone for filtering respirable dust and aerosol particles from air passing through the cyclone from the air inlet to the air outlet;
- and
- a detector mounted on the cyclone for detecting radiation emitted by radon daughters attached to dust and aerosol particles on the filter.
A method of monitoring the degree of exposure to which a person is subjected by radiation from radon daughters, which method comprises the steps of passing air in the person's environment through a cyclone to separate nonrespirable dust and aerosol particles from the air, passing the air issuing from said cyclone through a filter to filter respirable dust and aerosols from the air passing through the cyclone, and detecting radiation emitted by radon daughters attached to dust and aerosol particles filtered from the air by the filter.
Dependencies are inferred from the claim text.