DETERMINATION OF THE FLUORINE CONTENT OF FLUOROCHEMICAL-TREATED FABRICS BY NEUTRON ACTIVATION USING THE 19F(n,2n)18F REACTION

Authors
  1. Johnson, F.A.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
An analytical procedure has been developed for determining the fluorine content of fluorochemical-treated fabrics by activation with fast neutrons, using Teflon film as the reference standard. The ultimate success of the technique depends on effective retention of the active recoil 18F nuclei produced in the 19F(n,2n)18F reaction, which is accomplished by sealing all samples individually in Mylar film. It is demonstrated that recoil protons produced in the fabric substrate by the incident neutrons create a measurable amount of 18F in the basic unfinished fabric through the 18O(p,n)18F reaction. The production of such excess 18F tends to compensate for systematic deficiencies encountered in the measurement of the total 18F-activity of the finished fabric. TRUNCATED
Report Number
809 —
Date of publication
15 Oct 1979
Number of Pages
35
DSTKIM No
79-03368
CANDIS No
87695
Format(s):
Originator's fiche received by DSIS;Hardcopy

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