Set up and application of an underwater gamma-ray spectrometer for radioactivity measurements

Tsabaris, C; Vlachos, DS; Papadopoulos, CT; Vlastou, R; Kalfas, CA

dc.contributor.author	Tsabaris, C	en
dc.contributor.author	Vlachos, DS	en
dc.contributor.author	Papadopoulos, CT	en
dc.contributor.author	Vlastou, R	en
dc.contributor.author	Kalfas, CA	en
dc.date.accessioned	2014-03-01T01:54:47Z
dc.date.available	2014-03-01T01:54:47Z
dc.date.issued	2005	en
dc.identifier.issn	1108-393X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27462
dc.subject	Underwater sensors	en
dc.subject	Continuous monitoring	en
dc.subject	Radioactivity	en
dc.title	Set up and application of an underwater gamma-ray spectrometer for radioactivity measurements	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The set up and control of an underwater measuring instrument for radioactivity pollution in the marine environment is described. The detection system is based on a NaI scintillator (RADAM III) with modifications for use in the marine environment with on-line measurements. The system is simple, has low power consumption and is stable for long-term monitoring (10 months). Before its deployment, the sensor was calibrated in the laboratory in a tankful! of water to reproduce the marine environment. The calibrations were performed, by detecting the 661keV and 1461 keV gamma rays of known activity liquid sources Cs-137 and K-40, respectively. The measured spectra in the laboratory were compared with spectra from a similar detector as acquired in the field. The analysis of the parallel measurement gave satisfactory agreement for the concentration of the potassium (K-40), as calculated from the salinity in the seawater, thus enabling the system for quantitative measurement of the seawater radioactivity.	en
heal.publisher	NATL CENTRE MARINE RESEARCH	en
heal.journalName	MEDITERRANEAN MARINE SCIENCE	en
dc.identifier.isi	ISI:000207959400003	en
dc.identifier.volume	6	en
dc.identifier.issue	1	en
dc.identifier.spage	35	en
dc.identifier.epage	40	en