Abstract
A dosimeter for radon progeny has been proposed consisting of a single sampler with one 400-mesh wire screen and one filter, which is considered as a model for a portable bronchial dosimeter. During the sampling, air is drawn through the screen and the filter at a face velocity of 12.0 cm s(-1). After sampling, measurements of the screen and the filter are made at the same time through gross alpha counting. The annual effective dose (E, in mSv y(-1)) is calculated employing the exposure to radon progenies in the tracheobronchial (T-B) region. The dosimeter can be used in conjunction with an activated charcoal canister for the measurement of the radon gas concentration to yield the effective dose conversion factor (DCF, in mSv y(-1) per Bq m(-3)). These have laid the foundation to the design of a portable bronchial dosimeter. The validity of the dosimeter has been tested through measurements of annual effective dose and the effective dose conversion factor in different environments.
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