Device and software used to carry out Cyclic Neutron Activation Analysis

This paper discusses the device and software used to carry out Cyclic Neutron Activation Analysis (CNAA). The aim of this investigation is defining through this device the fluorite content present on different samples from fluorspar concentration plant through the DGNAA (Delayed Gamma Neutron Activation Analysis) method. This device is made of americium-beryllium neutron source, NaI (2^×2⁾ and BGO (2^×2⁾ gamma rays detectors, multichannel and an automatic mechanism which moves the samples from activation and reading position. This mechanism is controlled by a software which allows moving the samples precisely and in a safe way (∼ms), which it is very useful when the radioactive isotopes have to be detected with a half time less than 8s