Absorbed dose to water in Co-60 γ-rays
 

A standard for absorbed dose rate to water in a Co-60 field using a graphite calorimeter at the National Metrology Institute of Japan
Morishita, Y.; Kato, M.; Takata, N.; et al.
Radiation Protection Dosimetry 154, (3) 331-339 (2013)

Accumulation and dissipation of positive charges induced on a PMMA build-up cap of an ionisation chamber by Co-60 gamma-ray irradiation
Morishita, Y.; Takata, N.
Radiation Protection Dosimetry 155 (3) 364-368 (2013)

Effect of radiation-induced charge accumulation on build-up cap on the signal current from an ionisation chamber
Takata, N.; Morishita, Y.
Radiation Protection Dosimetry 145 (1) 21-27 (2011)