Extending k₀-NAA beyond (n,γ): quantification of titanium and nickel using (n,p) reactions in advanced alloy
Year: 2025
Type: article
Abstract: Estimating Titanium (Ti) and Nickel (Ni) in D9 and T91 alloys using Neutron Activation Analysis (NAA) via the (n,γ) reaction presents significant challenges due to the short half-lives of their activation products and the intense Compton background arising from the high-yield gamma emissions of 56 Mn. This study explores k ₀-NAA extension to (n,p) reactions for the estimation of Ti and Ni in advanced alloy. The gamma energy of 159.4 keV from 47 Ti(n,p) 47 Sc and 810.8 keV from 58 Ni(n,p) 58 Co was employed for their quantification. The important k f -factors were determined using the established fast spectrum of the Pneumatic Fast Transfer System (PFTS), KAMINI reactor. Additional parameters, such as the fast-to-epithermal neutron flux ratio, were evaluated using the reference gamma energy of 58 Ni(n,p) 58 Co, along with the h-factor, which accounts for deviations specific to a reaction and irradiation facility. Standardized h-factors were measured, based on standardized k f -factors and a fast flux ratio measured using Ni-58, for Ti-46, Ti-47, Ti-48 and Fe-54. These h-factors allow direct comparison with previously reported literature data for 4 different reactors and many channels with other newly measured values for different reactors and channels.
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,790
OpenAlex ID: W4415732677