Time-resolved prompt gamma emission from epithermal neutrons for isotopic analysis at ISIS neutron source.
Arcidiacono L., Festa G., Andreani C., Senesi R.
VI - Fisica applicata, acceleratori e beni culturali
Aula 29C-2 - Giovedì 20 h 09:00 - 13:00
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This work presents a technique for isotope identification which takes advantage of the time structure of spallation neutron sources for time-resolved spectroscopy. Time resolved Prompt Gamma Activation Analysis (T-PGAA) consists in the measurement of gamma energy spectrum induced by the radioactive capture as a function of incident neutron Time Of Flight, directly related with the energy of incident neutrons. The potential of the proposed concept was explored on INES at ISIS spallation neutron source (U.K.). Through this new technique we show an increase in the sensitivity to specific elements of archaeometric relevance. Results on a standard bronze sample are presented.