The influence of the size of material surfaces on radon daughters plate-out

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 313; no. 1-2; pp. 290 - 294
• Main Authors: N. Hadler, J.C., Iunes, P.J., A. Osorio, A.M., Paulo, S.R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.1992
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/0168-9002(92)90108-G

This work concerns with the methodology of indoor radon and radon daughters monitoring. Some characteristics of the radon daughters (RD) plate-out on material surfaces were studied by using bare CR-39 detectors. In expositions performed in closed environments, bare detectors were placed free from the influence of other surfaces (except that of the detectors themselves). We observed that track density increased as detector's area decreased. These experimental results were explained at least qualitatively by means of diffusion theory. This analysis is a step forward a better understanding about the relationship between the track density presented by the bare CR-39 and radon and RD α-activity in the air.