1. Center of Research Equipment, Korea Basic Science Institute, 162, Yeonggudanji-ro, Ochang-eup, Cheongwon-gu, Cheongju-si 28119, Republic of Korea
2. Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
3. Geologic Environmental Division, Korea Institute of Geoscience & Mineral Resources, 92 Gwahangno, Yusung-gu, Daejeon 34132, Republic of Korea
4. Research Center for Geochronology & Isotope Analysis, Korea Basic Science Institute, 162, Yeonggudanji-ro, Ochang-eup, Cheongwon-gu, Cheongju-si 28119, Korea