NAA is based on the principle of neutron irradiation, where a sample is exposed to a flux of neutrons within a nuclear reactor. This irradiation causes the stable isotopes of elements within the sample to become radioactive, emitting characteristic gamma rays as they decay. The energy and intensity of these gamma rays are unique to each element, allowing scientists to identify and quantify the elements present in the sample with exceptional accuracy. The e-learning course covers crucial aspects of the technique, from meticulous sample preparation and controlled irradiation procedures to precise gamma ray spectrometry and sophisticated data analysis. It also emphasises quality control and assurance, ensuring reliable and reproducible results.
By offering this training online, the IAEA is democratising access to NAA, overcoming geographical limitations and resource constraints that often hinder scientific development. This initiative strengthens scientific capabilities in diverse fields, including environmental monitoring (e.g., analyzing pollutants), materials science (e.g., determining the composition of alloys), archaeology (e.g., dating and sourcing artifacts), and even forensics. By enabling researchers worldwide to proficiently utilise NAA, the IAEA is fostering scientific advancement and contributing to a deeper understanding of our world.