Cosmogenic radioactive nuclides, particularly K^40, Mn^54 and Co^57 are measured in meteorites Nos. Ⅰ,Ⅱ and Ⅴ from the Kirin meteorite shower which is very seldom to be met with in world history in the sense of its...Cosmogenic radioactive nuclides, particularly K^40, Mn^54 and Co^57 are measured in meteorites Nos. Ⅰ,Ⅱ and Ⅴ from the Kirin meteorite shower which is very seldom to be met with in world history in the sense of its scale. Brief accounts are given of the distribution of cosmogenic nuclides with depth, the characteristics of cosmicray induced reactions and that of target nuclides, the energy region of bombarding particles, and the relative positions of meteorites Ⅰ,Ⅱ and Ⅴ with respect to the original meteoroid. The variations in Mn^54, Co^57 and K^40 with depth in No. I Kirin meteorite provides an excellent example for studies in this field.展开更多
文摘Cosmogenic radioactive nuclides, particularly K^40, Mn^54 and Co^57 are measured in meteorites Nos. Ⅰ,Ⅱ and Ⅴ from the Kirin meteorite shower which is very seldom to be met with in world history in the sense of its scale. Brief accounts are given of the distribution of cosmogenic nuclides with depth, the characteristics of cosmicray induced reactions and that of target nuclides, the energy region of bombarding particles, and the relative positions of meteorites Ⅰ,Ⅱ and Ⅴ with respect to the original meteoroid. The variations in Mn^54, Co^57 and K^40 with depth in No. I Kirin meteorite provides an excellent example for studies in this field.
