The Determination of Fluorine by Cyclic Activation Analysis Method Using ²⁴¹Am-Be Neutron Source

Abstract

Cyclic activation analysis method using ²⁴¹Am-Be neutron source was studied to determine the fluorine content. In order to effectively accumulate the counting value of the induced nuclide, the time for neutron burst, for counting and for sample transport considering the half life of induced nuclide were discussed. See saw type and pneumatic tube type cyclic activation analysis systems were deviced to accumulate the activity of ¹⁶N produced by (n, α) reaction. Applying the result, the fluorine content of several kinds of fluorine plastics containing various kind of fillers was determined. The result obtained by cyclic activation method agreed with that by chemical analysis.