ON-LINE LUMINESCENT DOSIMETRY OF PRODUCT PROCESSING MODE AT AN ELECTRON LINAC

Radiation-technological processes on the basis of electron accelerators, in particular, sterilization of medical de-vices, are regulated by international standards. The distribution of the electron flux density and absorbed dose are the main parameters of such processes, that require constant monitoring. In this work, we investigated the possibil-ity to determine in real time the absorbed dose profile on the surface of an object processed using the effect of ca-thodoluminescence, that occurs when the electron flux acts on technical materials (mainly amorphous dielectrics). The results of calibration of the cathodoluminescent radiators of different composition against the absorbed dose measured by a calorimetric method are presented. The study of the novel technique at an LU-10 electron Linac of NSC KIPT made it possible to identify the sources of uncertainty and evaluate their contribution to the dose meas-urement.

Accelerator Production of Scandium Radioisotopes: Sc-43, Sc-44, and Sc- 47

Scandium radioisotopes are increasingly considered viable radiolabels for targeted molecular imaging (Sc-43, Sc-44) and therapy (Sc-47). Significant technological advances have increased the quantity and quality of available radioscandium in the past decade, motivated in part by the chemical similarity of scandium to therapeutic radionuclides like Lu-177. The production and radiochemical isolation techniques applied to scandium radioisotopes are reviewed, focusing on charged particle and electron linac initiated reactions and using calcium and titanium starting materials.