Fast neutron activation analysis - FNAA using d(13 MeV)+Be reaction for archaeometrical research at Bucharest Cyclotron

In the last ten years the Bucharest U-120 classical variable-energy Cyclotr on was employed as an intense source of fast neutrons produced by 13.5 MeV deuterons on a thick beryllium target [1], mainly for radio-biological and archaeometrical studies. To characterize this fast neutrons field, energy s pectra, yields and average energy were determined using the time-of-flight (TOF) and multiple foils (activation detectors and fission chambers) method s. The potential for elemental analysis using FNAA (Fast Neutron Activation Analysis), especially for archaeological objects, is presented and illustr ated with some results on coloured Byzantine glass bracelets found in Roman ia (receipts of pigments related to various glass elemental composition).