A new passive radon-thoron discriminative measurement system |
| |
Authors: | Sciocchetti G Sciocchetti A Giovannoli P DeFelice P Cardellini F Cotellessa G Pagliari M |
| |
Affiliation: | Technoradon S.r.l., Via Pereira 205, Rome, Italy. g.sciocchetti@technoradon.it |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|