PRIME Lab Research

The cosmogenic nuclides measured by AMS at PRIME Lab include 10Be,14C, 26Al, 36Cl, 41Ca and 129I. They are produced in meteorites and other extraterrestrial materials by intense cosmic radiation with target materials, in the Earth's atmosphere by cosmic ray spallation of target elements (Garden variety), and on the solid surface of the earth by cosmic ray spallation, thermal neutron and muon captures, and other nuclear reactions with principal target atoms. In addition, nuclear weapon tests and nuclear fuel reprocessing also produce 10Be , 14C, 36Cl and 129I. Table 1 shows some cosmgenic nuclides with half-lives and major targets.

Table 1. Major Cosmogenic Nuclides
NuclideHalf-life(Yr)Major Targets() = in atmosphere
14C 5,730 O, Mg, Si, Fe (N)
41Ca 1.04 x 105 Ca, Ti, Fe
36Cl 3.01 x 105 Cl, K, Ca, Fe,Ti, (Ar)
26Al 7.05 x 105 Si, Al, Fe, (Ar)
10Be 1.36 x 106 O, Mg, Si, Fe, (N, O)
53Mn 3.7 x 106 Fe
129I 1.56 x 107 Te, Ba, La, Ce, (Xe)


PRIME Lab Research List

The ever-increasing diversity of researches at PRIME Lab through the collaborations from nationwide to worldwide have been being made great contribution to the following areas:

Earth and Space Science
Energy and Mineral Resources application
Biological Sciences
Health physics
Nuclear safety and safeguard
Archaeology - Human evolution