An autonomous Radon sensor with wireless connectivity has been developed, using a BJT detector on high-resistivity silicon as alpha-particle detector. Charged Radon daughters are collected on the detector surface electrostatically. Thanks to the BJT internal amplification, real-time alpha particle detection is made possible using a very simple readout electronics which records alpha-particle arrival time and charge. Functional tests at known Radon concentrations demonstrated a sensitivity up to 4.9 cph/(100 Bq/m^3), which translates into the capability of detecting a Radon concentration of 200±20 Bq/m^3 and 500±50 Bq/m^3 after 10 and 4 h, respectively. The count rate at nominally-zero Radon concentration was 0.05 cph.
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Titolo: | Performance of a Radon Sensor Based on a BJT Detector on High-Resistivity Silicon |
Autori: | |
Data di pubblicazione: | 2012 |
Abstract: | An autonomous Radon sensor with wireless connectivity has been developed, using a BJT detector on high-resistivity silicon as alpha-particle detector. Charged Radon daughters are collected on the detector surface electrostatically. Thanks to the BJT internal amplification, real-time alpha particle detection is made possible using a very simple readout electronics which records alpha-particle arrival time and charge. Functional tests at known Radon concentrations demonstrated a sensitivity up to 4.9 cph/(100 Bq/m^3), which translates into the capability of detecting a Radon concentration of 200±20 Bq/m^3 and 500±50 Bq/m^3 after 10 and 4 h, respectively. The count rate at nominally-zero Radon concentration was 0.05 cph. |
Handle: | http://hdl.handle.net/11582/135801 |
ISBN: | 9781467320283 9781467320290 9781467320306 |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |