Fluorescence of aqueous sodium salicylate. Solutions under excitation by ionizing radiations

Abstract

The equations derived in the expanding sphere model¹ are applied to the experimental results on the fluorescence from aqueous salicylate solutions under X-irradiation. The results fit the theory well over a wide concentration range and their deviation from the behaviour of the same system under u.-v. irradiation agrees quantitatively with a mechanism involving the non-homogeneous quenching by radiation-induced radicals of solute molecules excited by the same ionizing radiations.