Determination of k 0-values for some elements in neutron capture gamma-ray for prompt gamma activation analysis

Exploration and modification of data for k (0)-PGAA (prompt gamma-ray activation analysis) values used as standards for k (0) standardization are needed. An integrated system has been installed and calibrated in Hot Laboratories Center for PGAA, using Cf-252 isotopic neutron source with neutron flux of 6.16E8 n/cm(2) s. The prompt k (0)-factors of about 12 elements were determined versus the 1951.1 keV gamma-ray of the Cl-35, as well as analyzing crude oil and oil product samples. The concentrations of the elements in crude oil H, B, Mg, Al, Na, Si, P, S, Cl, V and Cd were 1.18E5, 0.084, 5.48E2, 8.45E2 4.88E2, 1.62E2, 3.72E2, 8.2, 144.3, 393 and 209.2 ppm while in oil product samples were 1.32E5, 5.87, 4.56E2, 4.22E2, 7.16E3, 699, 157, 8.74, 492.3, 61 and 198.2 ppm. Validation of the k (0)-PGAA was applied in analyzing standard IAEA reference material (soil-7) which give good agreement with the literature data. The Cf-252 neutron beam in radiation position was characterized by the cadmium-ratio method, and found that the cadmium ratio (f), was 160.