A new passive radon-thoron discriminative measurement system has been developed for monitoring radon and thoron individually. It consists of a 'couple' of passive integrating devices with a CR39 nuclear track detector (NTD). The experimental prototype is based on the application of a new concept of NTD instrument developed at ENEA, named Alpha-PREM, acronym of piston radon exposure meter, which allows controlling the detector exposure with a patented sampling technique (Int. Eu. Pat. and US Pat.). The 'twin diffusion chambers system' was based on two A-PREM devices consisting of the standard device, named NTD-Rn, and a modified version, named NTD-Rn/Tn, which was set up to improve thoron sampling efficiency of the diffusion chamber, without changing the geometry and the start/stop function of the NTD-Rn device. Coupling devices fitted on each device allowed getting a system, which works as a double-chamber structure when deployed at the monitoring position. In this paper both technical and physical aspects are considered. © The Author 2010. Published by Oxford University Press. All rights reserved.
All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
- Radiological and Ultrasound Technology
- Public Health, Environmental and Occupational Health
Sciocchetti, G., Sciocchetti, A., Giovannoli, P., DeFelice, P., Cardellini, F., Cotellessa, G., & Pagliari, M. (2010). A new passive radon-thoron discriminative measurement system. Radiation Protection Dosimetry, 141(4), 462 - 467. [ncq241]. https://doi.org/10.1093/rpd/ncq241