1. Radioactive Waste Disposal Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea (Corresponding author), e-mail: kjs@kaeri.re.kr, https://orcid.org/0000-0001-8922-7495
2. Radioactive Waste Disposal Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea