Gamma-spectrometric analysis of high salinity fluids - how to analyze radionuclides of the thorium decay chain far from radioactive equilibrium?
Creators
- 1. Verein fuer Kernverfahrenstechnik und Analytik Rossendorf e.V., P.O. Box 510119, D-01314 Dresden (Germany)
Description
Highly saline brines from a geothermal plant in Neustadt-Glewe, Germany, were investigated with respect to their radionuclide concentrations. The natural decay series in these fluids are far from radioactive equilibrium with main activity contributions from the radium isotopes 226Ra, 228Ra and 224Ra. A general mathematical formulation for the coupled radionuclide activities within one decay chain is applied on the system 228Ra...212Pb and tested on real samples in order to evaluate several radionuclide concentrations at the moment of sampling. - Highlights: → Highly saline brines of geothermal plants are far from radioactive equilibrium. → General mathematical formulation for the coupled radionuclide activities within one decay series was established. → Model was applied to the system Ra-228-Pb-212 and tested on real fluid samples from Neustadt-Glewe, Germany. → Method allows the calculation of radionuclide concentrations at the moment of sampling in systems with radioactive disequilibria.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.apradiso.2011.04.016Additional details
Identifiers
- DOI
- 10.1016/j.apradiso.2011.04.016;
- PII
- S0969-8043(11)00250-8;
Publishing Information
- Journal Title
- Applied Radiation and Isotopes
- Journal Volume
- 69
- Journal Issue
- 11
- Journal Page Range
- p. 1613-1617
- ISSN
- 0969-8043
- CODEN
- ARISEF
Conference
- Title
- 6. workshop on radiochemical analysis for use and decommissioning of nuclear facilities, the declaration of waste and radiation protection; SAAGAS: 23. seminar on activation analysis and gamma spectrometry
- Acronym
- RCA2010
- Dates
- 6-9 Sep 2011
- Place
- Dresden (Germany)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43064032
- Subject category
- S07: ISOTOPES AND RADIATION SOURCES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- EQUILIBRIUM; FLUIDS; GAMMA SPECTROSCOPY; LEAD 212; NUCLEAR DECAY; RADIOACTIVITY; RADIUM 224; RADIUM 226; RADIUM 228; SALINITY; THORIUM
- Descriptors DEC
- ACTINIDES; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DECAY; ELEMENTS; EVEN-EVEN NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INTERNAL CONVERSION RADIOISOTOPES; ISOTOPES; LEAD ISOTOPES; METALS; NUCLEI; RADIOISOTOPES; RADIUM ISOTOPES; SPECTROSCOPY; YEARS LIVING RADIOISOTOPES
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.