Non invasive measurement of fused solar salts level by gamma-ray spectrometry of potassium natural radioactivity

R. Scafè, F. Pisacane, R. Grena, F. Fabrizi, D. Mazzei, T. Crescenzi, M. Salmi

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A feasibility test, concerning a non invasive method for measuring the level of fused solar salts in a storage vessel, is described. The method is based on the spectrometry of gamma-rays emitted by the salts performed by a scintillation detector positioned outside the vessel insulation. Measurements concerned the fused solar salts (a binary mixture of NaNO3 and KNO3, 60%m and 40%m, respectively) contained in the Casaccia PCS experimental solar facility and working at 408oC. Preliminary results demonstrated the method's feasibility by using the information from the 1.46 MeV40K gamma-ray line (11% branching ratio). Two deterministic models, as well as Monte Carlo simulations, were implemented for predicting the responses along the tank and specific algorithms, based on 1 or 3 detectors, were developed for the estimation of salt level. © 2008 IOP Publishing Ltd and SISSA.
Original languageEnglish
Article numberP04005
Pages (from-to)-
JournalJournal of Instrumentation
Issue number4
Publication statusPublished - 2008


All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics

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