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    STUDIA PHYSICA - Ediţia nr.2 din 2005  
         
  Articol:   GAMMA AND BETA SPECTROMETRY STUDY ON NEUTRON ACTIVATED VITREOUS BIOACTIVE SYSTEMS CONTAINING YTTRIUM.

Autori:  D. CACAINA, D. BARBOS, H. YLANEN, S. SIMON. 		 
       
         
  Rezumat:  Radioactive and bioactive microspheres incorporating 90Y radioisotope were investigated as a potential material for in situ radiotherapy of cancers. The glass samples obtained by melt annealing and sol-gel methods were neutron activated in a TRIGA nuclear reactor. The radioisotopes induced were analysed by gamma and beta spectrometry. The data indicate the occurrence of 90mY, 24Na, trace of 42K in all samples. 90Y was obtained only in the samples prepared by sol-gel method. In the glass samples obtained by melts annealing procedure 198Au was also evidenced. The experimental data correlated with the theoretical results regarding the neutron activation suggest the possibility to obtain radioactive microspheres with the required activity for therapeutic applications  
         
     
         
         
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