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Irlinger, J. ; Wielunski, M. ; Rühm, W.

Thoron detection with an active Radon exposure meter - first results.

Rev. Sci. Instruments 85:022106 (2014)
Verlagsversion Volltext DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
For state-of-the-art discrimination of Radon and Thoron several measurement techniques can be used, such as active sampling, electrostatic collection, delayed coincidence method, and alpha-particle-spectroscopy. However, most of the devices available are bulky and show high power consumption, rendering them unfeasible for personal exposition monitoring. Based on a Radon exposure meter previously realized at the Helmholtz Center Munich (HMGU), a new electronic prototype for Radon/Thoron monitoring is currently being developed, which features small size and weight. Operating with pin-diode detectors, the low-power passive-sampling device can be used for continuous concentration measurements, employing alpha-particle-spectroscopy and coincidence event registration to distinguish decays originating either from Radon or Thoron isotopes and their decay products. In open geometry, preliminary calibration measurements suggest that one count per hour is produced by a 11 Bq m(-3) Radon atmosphere or by a 15 Bq m(-3) Thoron atmosphere. Future efforts will concentrate on measurements in mixed Radon/Thoron atmospheres.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Lung-cancer; Issue; Risk
ISSN (print) / ISBN 0034-6748
e-ISSN 1089-7623
Zeitschrift Review of Scientific Instruments
Quellenangaben Band: 85, Heft: 2, Seiten: , Artikelnummer: 022106 Supplement: ,
Verlag American Institute of Physics (AIP)
Verlagsort Melville
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Radiation Protection (ISS)