On Specific Quenching of Tb<sup>3+</sup> Ions Radioluminescence in Aqueous Solutions by Hydrogen Atom

The influence of acceptors of the water radiolysis primary products of the H atom and ea–q on the spectra and intensity of the Tb3+ ion radioluminescence and photoluminescence in aqueous solutions of TbCl3 and Tb(NO3)3 is considered. The activation effect of Tb3+ radioluminescence in the presence of H acceptors was revealed, indicating the presence of a specific quenching reaction (Tb3+)* by this radiolysis product, inhibited by its acceptors. An increase in activation was found in the joint presence of H and hydrated electron acceptors in the solution; for acceptors of the latter, a similar activation effect of Tb3+ radioluminescence was established earlier.