1. Korea Advanced Institute of Science and Technology—KAIST, 291, Daejeon 34142, South Korea
2. National Radiation Protection Agency of Cameroon, Box 33732, Yaounde, Cameroon
3. Atomic and Nuclear Spectroscopy, Archeometry, University of Liège, Bat. B15 Sart Tilman, 4000 Liege 1, Belgium
4. Korea Institute of Nuclear Safety (KINS), 62 Gwahak-ro, Yuseong-gu, Daejeon 34142, South Korea
5. UFD Mathématiques, Informatique Appliquée et Physique Fondamentale, Université de Douala, P.O. Box 24157, Douala, Cameroon