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二次剥离法26Al的AMS测量
AMS Measurement of 26Al by Second Stripping Method
【摘要】 在中国原子能科学研究院HI-13串列加速器上使用Q3D磁谱仪用二次剥离法对26Al进行了AMS测量。结果表明,二次剥离法能有效抑制26Mg的干扰,同时又可以获得较强的束流,从而提高测量效率。在初步的实验中,26Al/27Al的探测限已达到4×10-14。对实验结果进行了分析,提出了进一步提高测量灵敏度的措施。
【Abstract】 An AMS measurement of 26Al was performed by second stripping method based on Beijing Q3D magnetic spectrometer at the HI-13 tandem accelerator of China Institute of Atomic Energy.High beam current of 27AlO-and high suppress factor of 26Mg were obtained by second stripping method,so the measurement efficiency was improved.An effective detection limit of 4 10-14 for the 26Al/27Al ratio was obtained in the preliminary experiment.The experimental results were analyzed,and some techniques to increase the sensitivity were discussed.
【关键词】 加速器质谱；
二次剥离；
26Al；
同量异位素；
【Key words】 Accelerator Mass Spectrometry； second stripping； 26Al； Isobar；
【Key words】 Accelerator Mass Spectrometry； second stripping； 26Al； Isobar；
【基金】 国家自然科学基金资助项目(10805010);广西大学科学基金资助项目(X071083)
- 【文献出处】 核电子学与探测技术 ,Nuclear Electronics & Detection Technology , 编辑部邮箱 ,2010年05期
- 【分类号】TL817.4
- 【下载频次】53