Nuclear reactor YAYOI, University of Tokyo (12 kW)
     Experimental systems and dosimetry

References: Oka, Y. et al. (1980) Experiments and analyses of neutron and gamma-ray streaming in the cavity-duct system of a fast neutron source reactor. .
                                             Science and Engeneering, 76:119-136.
                 Oka, Y. et al. (1980) Neutron and gamma-ray penetrations in thick iron. Science and Engeneering, 73:259-273.

Modification od energy profile by neutron filter (See individual beam line)

Irradiation system and dosimetry

At the position of blood samples, the doses due to neutrons and gamma-rays were determined by TE gas/CO2 gas twin chamber method.      The external and internal gamma-rays were further confirmed by the TLD dosimeters in the presence or absence of blood.      Blood samples (whole blood) in 1 ml polyethyrene tubes were irradiated for appropriate time until they were pulled out of the reactor.