ON THE ACTIVATION ANALYSIS OF OXYGEN WITH HELP OF THE REACTION O$sup 16$(t,n)F$sup 1$$sup 8$

The reaction O/sup 16/(t,n)F/sup 18/ was used for the determination of oxygen in metal powders. Preliminary results for lithium and thorium are reported. The neutron source was a swimming pool type reactor. The irradiation was carried out in the water near the core. After irradiation the metal was dissolved in methanol and water. Glass wool, H/sub 2/SO/sub 4/, and NaF were added. The F/sup 18/ was distilled off as H/sub 2/SiF/sub 6/ and then precipitated as PbClF. The activity was counted using a NaCl(Tl) crystal detector. The fluoride content was also determined by volumetric analysis. (M.C.G.)