Show simple item record

dc.contributor.authorTomas, Jasper M
dc.contributor.authorPeereboom, Valesca
dc.contributor.authorKloosterman, Astrid
dc.contributor.authorvan Dijk, Arjan
dc.date.accessioned2021-07-12T08:17:48Z
dc.date.available2021-07-12T08:17:48Z
dc.date.issued2021-05-24
dc.identifier.pmid34044288
dc.identifier.doi10.1016/j.jenvrad.2021.106643
dc.identifier.urihttp://hdl.handle.net/10029/625031
dc.description.abstractThe detection of radioactivity of unknown origin necessitates the use of models that can quantify unknown corresponding source term parameters. In this work, a method for solving this inverse problem is described. The main goal of the method is that it can be used in emergency response. Therefore, the full modelling chain dealing with the collection and pre-processing of measurement data, source term estimation, (forward) dispersion modelling, and consequence assessment are discussed. Firstly, to verify this inverse model SHERLOC, the part of the modelling chain concerning the source term estimation based on measurement data, is applied to the first episode of the European Tracer Experiment (ETEX). Secondly, the complete model chain is applied to a release that is still unaccounted for; the 106Ru measured in the atmosphere of Europe in September and October of 2017. It is estimated that during the night of the 25th to the 26th of September 2017 approximately 1.33 PBq (1.33×1015 Bq) of 106Ru was emitted at a location in the region of the Southern Urals in the Russian Federation. Statistical indicators show that the modelled levels of concentration are in good agreement with the measurements. The radiological consequences of the release are estimated to be minor at distances farther than 22 km from the estimated source. However, in the vicinity of the emission the maximum committed dose received by the public may have exceeded 100 mSv. Since the presented approach can be executed within few hours after the collection of measurement data it can be used in the emergency response following the detection of radioactivity of unknown origin.en_US
dc.language.isoenen_US
dc.rightsCopyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.
dc.subjectAtmospheric transporten_US
dc.subjectEmergency responseen_US
dc.subjectInverse modellingen_US
dc.subjectNuclear/radiation accidenten_US
dc.subjectProtective actionsen_US
dc.subjectRuthenium-106en_US
dc.titleDetection of radioactivity of unknown origin: Protective actions based on inverse modelling.en_US
dc.typeArticleen_US
dc.identifier.eissn1879-1700
dc.identifier.journalJ Environ Radioact 2021; 235-236:106643en_US
dc.source.journaltitleJournal of environmental radioactivity
dc.source.volume235-236
dc.source.beginpage106643
dc.source.endpage
dc.source.countryEngland


Files in this item

Thumbnail
Name:
Publisher version

This item appears in the following Collection(s)

Show simple item record