Abstract :
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Radon is an invisible, odourless, heaviest (9 times
heavier than air) and radioactive gas. Radon, which is topic of
public health concern, has been found to be a ubiquitous air
pollutant in homes and in the environment of work stations. Risk
projections imply that radon is the second leading cause of lung
cancer after smoking. Measurement of radon, thoron and their
progeny is important because the radiation dose to human
population due to inhalation of radon and its progeny contribute
more than 50% of the dose from all sources of the radiation. LR-
115, type-II, plastic track detectors (SSNTDs) use to measure
radon concentration.
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