Abstract
Oxygen was determined in three kinds of ZrF4-based fluoride glass [ZrF4−BaF2−GdF3−AlF3 (ZBGA), ZrF4−BaF2−LaF3−YF3−AlF3−LiF−NaF (ZBLYALN) and ZrF4−BaF2−LaF3−YF3−AlF3−LiF (ZBLYAL)] used for fabricating optical fiberby18O(p, n)18F reaction without significant nuclear interference. The main long life96Nb nuclide was produced by the96Zr(p,n) reaction in a non-destructive analysis of ZBGA-fluoride glass and reduced by using a coincidence system with Ge(Li) and NaI(T1) detectors. Substoichiometric separation of18F was also used to determine oxygen in fluoride glass, especially in glass containing yttrium as a component element because the89Zr produced by the89Y(p,n) reaction is a positron emitter, the same as18F. It was confirmed that the oxygen concentration in fluoride glass was 13–2460 ppm related to the loss by scattering.
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