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Online measurement of unattached and total radon and thoron decay products.
Appl. Radiat. Isot. 67, 843-848 (2009)
Radon and thoron decay products appear in two size modes: unattached and attached to aerosol particles. They deposit at different regions of the human respiratory tract causing different inhalation doses. A separate measurement of the concentration of both modes is realized by a new device based on a working level monitor and screen sampling. In addition, a new operation and evaluation procedure of the working level monitor is described to identify the thoron decay products (212)Pb and (212)Bi separately. First measurements reveal consistent results. The developments in measurement technique will enhance radon and thoron dose assessment.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Radon decay products; Thoron decay products; Working level monitor; Pb-212; Bi-212; indoor; air; fraction
ISSN (print) / ISBN
0969-8043
e-ISSN
1872-9800
Zeitschrift
Applied Radiation and Isotopes
Quellenangaben
Band: 67,
Heft: 5,
Seiten: 843-848
Verlag
Elsevier
Verlagsort
Oxford
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Radiation Protection (ISS)