Neutron activation analysis with multi-parameter coincidence method was developed at the Japan Atomic Energy Agency (JAEA)
and 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 presolar grains were extracted from the Allende meteorite. Trace elements in
the presolar diamonds were measured by neutron activation analysis with multi-parameter coincidence method.