New insight on the simultaneous H₂ and HNO₂ production in concentrated HNO₃ aqueous solutions under alpha radiation.

ABSTRACT: Knowledge of hydrogen and nitrous acid yields (G(H₂) and G(HNO₂)) from α radiolysis of nitric acid solutions is of critical importance for the technological aspects of reprocessing of spent nuclear fuel (SNF). This study provides critical information on the G values for external alpha irradiation of concentrated HNO₃ solutions. An investigation-specifically developed experimental setup allows performing this investigation without encountering issues related to extreme high local doses. In situ monitoring of the UV-visible induced absorption in irradiated HNO₃ solutions permitted quantification of HNO₂ production, and mass spectrometry was used to quantify H₂. The influence of the dose rate and HNO

SUBMITTER: Musat RM 

PROVIDER: S-EPMC8696651 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature