DONG Ke-Jun1, HE Ming1, LI Chao-Li1, HU Hao1, LIU Guang-Shan2, CHEN Zhi-Gang2, LI Zhen-Yu1, WU Shao-Yong1, LIU Jian-Cheng1, YOU Qu-Bo1, JIN Chun-Sheng1, WANG Xiang-Gao3, SHEN Hong-Tao4, GUAN Yong-Jing3, YUAN Jian1, JIANG Shan1**
1 China Institute of Atomic Energy, P.O. Box 275(50), Beijing 102413 2 College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005 3 College of Physics Science and Technology, Guangxi University, Nanning 530004 4 College of Physics and Technology, Guangxi Normal University, Guilin 541004
AMS Measurement of 53Mn at CIAE
DONG Ke-Jun1, HE Ming1, LI Chao-Li1, HU Hao1, LIU Guang-Shan2, CHEN Zhi-Gang2, LI Zhen-Yu1, WU Shao-Yong1, LIU Jian-Cheng1, YOU Qu-Bo1, JIN Chun-Sheng1, WANG Xiang-Gao3, SHEN Hong-Tao4, GUAN Yong-Jing3, YUAN Jian1, JIANG Shan1**
1 China Institute of Atomic Energy, P.O. Box 275(50), Beijing 102413 2 College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005 3 College of Physics Science and Technology, Guangxi University, Nanning 530004 4 College of Physics and Technology, Guangxi Normal University, Guilin 541004
摘要The long-lived isotope 53Mn cosmogenically produced in situ is a very useful indicator for geochronological dating. A new 53Mn accelerator−mass-spectrometry (AMS) measurement method is developed based on the HI-13 Tandem Accelerator and ΔE−Q3D detection system at China Institute of Atomic Energy. The performance of 53Cr isobar separation and suppression is tested by a series of 53Mn standards and commercial MnO samples. The results show that the ΔE−Q3D detection system brought about an overall suppression factor of more than 107 for the interfering isobar 53Cr.
Abstract：The long-lived isotope 53Mn cosmogenically produced in situ is a very useful indicator for geochronological dating. A new 53Mn accelerator−mass-spectrometry (AMS) measurement method is developed based on the HI-13 Tandem Accelerator and ΔE−Q3D detection system at China Institute of Atomic Energy. The performance of 53Cr isobar separation and suppression is tested by a series of 53Mn standards and commercial MnO samples. The results show that the ΔE−Q3D detection system brought about an overall suppression factor of more than 107 for the interfering isobar 53Cr.
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2011, Vol. 28 
