Speaker
Description
The RIKEN Nishina Center operate an accelerator facility of Radioactive Isotope Beam Factory (RIBF) which provide high-intense heavy ion beams from hydrogen to uranium using five cyclotrons. The main subject is nuclear physics, nuclear astrophysics, nuclear chemistry, biology, RI production to other facility, and etc.
Recently, some experiments using unsealed RI produced at the accelerators have been performed. While usual RI handling facilities in other laboratories or universities mainly use beta-emitter RI, the hot laboratories at RIBF handle spontaneous fission source which generate neutrons, and handle alpha emitter RI for nuclear medical research. These RI sources have higher exposure risk than usual beta-emitter RI. Furthermore, due to the increase of the amount of unsealed RI and the number of its users, several troubles have occurred during the past year. Typical cases and their solutions are introduced.
