Authors:Y. Hatsukawa, Y. Miyamoto, Y. Toh, M. Oshima, M. Hosein Mahmudy Gharaie, K. Goto, and K. Toyoda
In this study, using neutron activation analysis with multi-parameter coincidence method which was developed at Japan Atomic
Energy Agency (JAEA), a non-destructive, ultra-high sensitive multi-elemental determination has been realized. The multi-parameter
coincidence method is carried out with an array of 19 germanium detectors, GEMINI-II. Using this system, very weak γ-rays
emitted from trace amounts of elements can be detected. The iridium concentration has been determined by means of neutron
activation analysis with multi-parameter coincidence method for Cuban sediment samples across the K/T boundary strata.
Authors:Y. Hatsukawa, Y. Toh, M. Oshima, A. Kimura, and M. Hosein Mahmudy Gharaie
In this study, sensitive trace element analyses were carried out without chemical separation by the combination of neutron
activation analysis and multi-parameter coincidence spectroscopy. A long-lived radioisotope 129I in algae samples and iridium in geological samples were analyzed.