**2. Procedures**

The elements in a sample to be analyzed are made radioactive by irradiation with neutrons, and the induced radioactive samples can be identified and measured. The amount of a given neutron activation product that formed during neutron irradiation is proportional to the amount of its parent isotope and thus the concentration of the corresponding element [2].

> © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
