Developing the measurement of 60Fe with AMS at CIAE

Abstract The long lived radioactive nuclide 60 Fe is interesting in many research fields such as astrophysics and nuclear physics. Taking the advantage of the high energy of HI-13 tandem AMS system and the high performance of a Q3D magnetic spectrometry at CIAE, the measurement method of 60 Fe is being developed. As first step, 58 Fe and 58 Ni are used for simulating 60 Fe and 60 Ni for optimizing the measurement conditions and checking the ability of isobar suppression. The results shown that an overall suppression factor of more than 10 11 can be obtained by using the ΔE-Q3D technique in combination with a four-anodes gas ionization chamber. Based on the findings a detection sensitivity of 60 Fe/Fe ∼ 10 −15 can be anticipated.