Accession Number : ADP004133

Title :   Measurement of Oxygen Contamination in Titanium Alloy Ingots by Fast Neutron Activation Analysis,

Corporate Author : SCIENCE APPLICATIONS INC SAN DIEGO CA

Personal Author(s) : Abusamra,A.

Report Date : JUL 1984

Pagination or Media Count : 20

Abstract : The total oxygen content of five titanium samples was determined using activation analysis with fast neutrons. The method utilizes the nuclear reaction 016(N,P)N16. The produced 16N has a half-life of 7.2 seconds and decays by emitting 6.1 MeV gamma rays. Titanium samples of variable oxygen content and benzoic acid standards incapsulated in polyethylene vials were irradiated simultaneously with 14.3 MeV neutrons produced from a fast neutron generator. They were transferred to two Nal (TL) gamma-ray counting systems and were simultaneously counted. The 6.1 MeV gamma-ray counts produced by both titanium sample and standards were and 0.27 percent with relative error of less than 5 percent. The analysis is nondestructive, fast accurate, practically interference free, and can reach 100 ppm level.

Descriptors :   *Titanium alloys, *Oxygen, *Contamination, *Neutron activation, Nondestructive testing, Interstitial, Reliability, Gamma ray spectroscopy, Neutron irradiation, Benzoic acids, Weld metal

Distribution Statement : APPROVED FOR PUBLIC RELEASE