Determination of Ion Recombination Correction Factor in a Spherical Ionization Chamber for $^{60}Co$ Gamma-Ray

Chung, Jae-Pil (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science) ;
Hah, Suck-Ho (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science) ;
Yi, Chul-Young (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science) ;
Kim, Hyun-Moon (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science) ;
Kim, Yong-Ho (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science) ;
Chun, Kook-Jin (Center for Ionizing Radiation, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science)