Myeong Shin Hwang(Dongguk Laboratory of Radioactivity Analysis and Standardization Incorporated, V-104 Business Incubation Center, 123, Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea)
Heung Nae Lee(Dongguk Laboratory of Radioactivity Analysis and Standardization Incorporated, V-104 Business Incubation Center, 123, Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea)
Mi-Rang Lee(Korea Hydro & Nuclear Power Company Limited, Nuclear Power Plant, Wolsong Nuclear, 671, Donghaean-ro, Yangnam-myeon, Gyeongju-si, Gyeongsangbuk-do 38219, Republic of Korea)