Institution: | (1) The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing Radiation Center, Beijing, 100875, P.R. China;(2) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China;(3) Department of Physics, Beijing, 100875, P.R. China;(4) Jiangxi Provincial Institute of Cultural Relicts and Archaeology, Nanchang, 33000, P.R. China |