An autonomous in situ detection system for radioactivity measurements in the marine environment

Tsabaris, C; Bagatelas, C; Dakladas, Th; Papadopoulos, CT; Vlastou, R; Chronis, GT

dc.contributor.author	Tsabaris, C	en
dc.contributor.author	Bagatelas, C	en
dc.contributor.author	Dakladas, Th	en
dc.contributor.author	Papadopoulos, CT	en
dc.contributor.author	Vlastou, R	en
dc.contributor.author	Chronis, GT	en
dc.date.accessioned	2014-03-01T01:27:53Z
dc.date.available	2014-03-01T01:27:53Z
dc.date.issued	2008	en
dc.identifier.issn	0969-8043	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18619
dc.subject	Autonomous underwater detectors	en
dc.subject	Marine radioactivity	en
dc.subject	Scintillation spectrometry	en
dc.subject.classification	Chemistry, Inorganic & Nuclear	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	Nuclear physics	en
dc.subject.other	Radiation	en
dc.subject.other	Radioactivity	en
dc.subject.other	Radioactivity measurement	en
dc.subject.other	Radioisotopes	en
dc.subject.other	Signal detection	en
dc.subject.other	Autonomous underwater detectors	en
dc.subject.other	Detection systems	en
dc.subject.other	In-situ	en
dc.subject.other	Marine environments	en
dc.subject.other	Marine radioactivity	en
dc.subject.other	Maximum depth	en
dc.subject.other	Scintillation spectrometry	en
dc.subject.other	Sensors	en
dc.subject.other	bismuth	en
dc.subject.other	bismuth 214	en
dc.subject.other	cesium 137	en
dc.subject.other	lead	en
dc.subject.other	lead 214	en
dc.subject.other	potassium 40	en
dc.subject.other	sodium iodide	en
dc.subject.other	technetium 99m	en
dc.subject.other	article	en
dc.subject.other	calibration	en
dc.subject.other	crystal	en
dc.subject.other	dilution	en
dc.subject.other	environmental monitoring	en
dc.subject.other	marine environment	en
dc.subject.other	priority journal	en
dc.subject.other	radioactivity	en
dc.subject.other	scintillation spectrometry	en
dc.subject.other	system analysis	en
dc.subject.other	Equipment Design	en
dc.subject.other	Equipment Failure Analysis	en
dc.subject.other	Marine Biology	en
dc.subject.other	Oceans and Seas	en
dc.subject.other	Radiation Dosage	en
dc.subject.other	Radiation Monitoring	en
dc.subject.other	Radioisotopes	en
dc.subject.other	Robotics	en
dc.subject.other	Scintillation Counting	en
dc.subject.other	Spectrum Analysis	en
dc.subject.other	Water	en
dc.subject.other	Water Pollutants, Radioactive	en
dc.title	An autonomous in situ detection system for radioactivity measurements in the marine environment	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apradiso.2008.02.064	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apradiso.2008.02.064	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	A new detection system named "KATERINA" is developed and applied for measuring marine radioactivity using NaI(Tl) as a crystal. This apparatus is designed for qualitative and quantitative radionuclide detection in the marine environment with maximum depth of deployment 400m. A detailed study for the enclosure of the system and for the electronics development is performed. The system offers volumetric activities in Bq/m(3) using the marine efficiency calibration, which is measured by dilution of three reference sources ((TC)-T-99m, Cs-137, and K-40) in a special tank. The calibration procedures for energy, energy resolution and efficiency were analyzed with particular attention to the factors that affect the calibration parameters. The underwater detector is tested in the field for acquiring radon daughters (Pb-214 and Bi-214) in a region where submarine groundwater discharge exists in the coastal zone. (c) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Applied Radiation and Isotopes	en
dc.identifier.doi	10.1016/j.apradiso.2008.02.064	en
dc.identifier.isi	ISI:000259385000025	en
dc.identifier.volume	66	en
dc.identifier.issue	10	en
dc.identifier.spage	1419	en
dc.identifier.epage	1426	en