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Integrating high voltage electric field detector for 220Rn progeny.
J. Tsinghua Univ. 53, 1380-1384 (2013)
The importance of 220Rn (thoron) progeny for human exposure has been widely recognized for many years. Detectors are needed for long-term measurements that directly sample and detect thoron progeny. This study presents an integrating detector based on a high voltage electric field and solid-state nuclear track detector (SSNTD). The high-voltage electric field of 7.7×10-4 V·m-1 has precipitation velocities of the 220Rn progeny of (6.5×10-4±7.7×10-5) m·s-1. The detector efficiency is measured to be 0.042 ± 0.005 4.For a one month measurement time, if the detection limit is set to 0.12-54.00 Bq·m-3, the relative uncertainty of the detector can be controlled to less than 50%. Tests show that the detector can continue to work for around 6 weeks without an external power supply.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter 220rn Progeny ; High-voltage Electric Field ; Long-term Measurement ; Solid State Nuclear Track Detector (ssntd)
ISSN (print) / ISBN 1000-0054
Zeitschrift Qinghua Daxue Xuebao - Journal of Tsinghua University
Quellenangaben Band: 53, Heft: 10, Seiten: 1380-1384 Artikelnummer: , Supplement: ,
Verlag Tsinghua University
Begutachtungsstatus peer-reviewed