摘要
The long-lived isotope ^(53)Mn cosmogenically produced in situ is a very useful indicator for geochronological dating.A new ^(53)Mn accelerator−mass-spectrometry(AMS)measurement method is developed based on the HI-13 Tandem Accelerator andΔE−Q3D detection system at China Institute of Atomic Energy.The performance of ^(53)Cr isobar separation and suppression is tested by a series of ^(53)Mn standards and commercial MnO samples.The results show that theΔE−Q3D detection system brought about an overall suppression factor of more than 107 for the interfering isobar ^(53)Cr.
作者
董克君
何明
李朝历
胡豪
刘广山
陈志刚
李振宇
武绍勇
刘建成
游曲波
金春生
王祥高
沈洪涛
管永精
袁坚
姜山
DONG Ke-Jun;HE Ming;LI Chao-Li;HU Hao;LIU Guang-Shan;CHEN Zhi-Gang;LI Zhen-Yu;WU Shao-Yong;LIU Jian-Cheng;YOU Qu-Bo;JIN Chun-Sheng;WANG Xiang-Gao;SHEN Hong-Tao;GUAN Yong-Jing;YUAN Jian;JIANG Shan(China Institute of Atomic Energy,P.O.Box 275(50),Beijing 102413;College of Oceanography and Environmental Science,Xiamen University,Xiamen 361005;College of Physics Science and Technology,Guangxi University,Nanning 530004;College of Physics and Technology,Guangxi Normal University,Guilin 541004)
基金
the National Natural Science Foundation of China under Grant Nos 11075221 and 10705054.
