2004 年 1 巻 3 号 p. 277-282
Nishina Memorial Cyclotron Center (NMCC) has been opened for nationwide-common utilization of positron nuclear medicine (PET) and PIXE (Particle Induced X-ray Emission analysis) since April 1993. Sufficient amount of 2.9-MeV protons can be extracted from a small-size cyclotron, which was established exclusively for PET, by accelerating H+2 -ions with acceleration parameters for 8.3-MeV deuterons. At the present time, nearly 40 subjects of PIXE and 15 subjects of PET have been pursued here. Especially for PIXE, many subjects in various research fields have been studied at our facility. More than 60,000 samples have already been analyzed up to the present, and nearly 75% of them are samples in the field of life-science. The total number of samples in each research field is about 45,000 for life science, 10,000 for the other research fields and 5,000 for technical development. International projects for investigating human exposure to toxic elements caused by wide-aerial contamination are also described as a topic.
