Investigations on the comparator technique used in epithermal neutron activation analysis

Neutron capture by Ru: Neutron cross sections ofRu96,102,104andγ-ray spectroscopy in the

“…Neutron capture by the element ruthenium is of particular interest because it has been suggested by Bereznai et al [1] that Ru can serve as a comparator in the quantitative analysis for other elements in neutron activation analysis. Moreover, the need to determine small concentrations of Ru in geological samples has been discussed by Gijbels and Zels [2]; for this determination, precise knowledge of the values of the Ru cross sections is critical.…”

Parametric neutron activation analysis of samples generating complex .gamma.-ray spectra

“…Bereznai et al (12) suggest that m is a negative quantity inside the core, and changes to a positive quantity in the (graphite) reflector. Ryves (9) states: "Well moderated systems containing hydrogen or deuterium have a nearly zero value of "m", but for graphite moderated assemblies "m" may vary from -0.1 to +0.1 .…”

The use of Ke,0factors as a tool for a critical evaluation of reactor thermal and epithermal (n,γ) cross-sections and of absolute gamma intensities

“…Furthermore, since the propagation factor for the error on the half-life was minimised by choosing appropriate irradiation, decay and measurements periods, the effect of the inaccuracy of T1p on (Ke,O)exp can be considered to be negligible (Bereznai and Keomley 1974).…”