Further developments of Neutron Activation Analysis (NAA) have recently been conducted in the Dalat research reactor (DRR) of Vietnam. Besides the single irradiation on the research reactor it is to be the cyclic irradiation mode; Besides the use of total neutron spectrum it is to be the epithermal neutrons; The measurement of prompt gamma-rays (PGNAA) is to be used besides the delay gamma-rays. Moreover, applications of NAA to be not only for environmental, geological and biological specimens but also extended for archaeological and forensics science studies. Particularly, the successful introduction of a modern (so-called k0-standardization method which – combined with a home-made software package namely “k0-DALAT” – made NAA at the DRR as a regionally appreciated laboratory. Brief of recent advances of NAA in DRR: (a) Development of the cyclic and pseudo-cyclic NAA; (b) Development of the epithermal NAA; (c) Application of the k0-standardized method for PGNAA; (d) Extension of NAA applications to archaeology and forensics science, will be talked in the presentation.
Keywords: Neutron Activation Analysis, k0-standardization method, Cyclic activation, Epithermal neutron NAA