Neutron activation analysis of high purity Selenium: Determination of Bromine

Neutron activation analysis for 2–0.8 p.p.m. bromine in selenium was performed by irradiating i-g samples for 2 h at a neutron flux of 4.10¹¹ n/cm²/sec. The bromine was separated by a double precipitation technique as silver bromide to obtain adequate decontamination and the isotope ⁸²Br (T_{$\text{1}\text{2}$}=35.87 h) measured. Errors due to self-shielding in the standards and flux-depression in the selenium were calculated. Measurements on 2 different photopeaks were made to avoid errors from interfering isotopes.