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宁强陨石作为我国有记载的第一块碳质球粒陨石,引起了人们广泛的兴趣和重视。根据矿物学和化学组成的初步结果,发现宁强陨石与著名的Allende陨石相似,同属CV群。 宇宙成因核素的测定可提供有关陨石进入大气层前的尺寸和宇宙线暴露年龄等重要信息,因而构成陨石学研究的一个重要内容。为此,我们利用新研制成功的低本底γ谱仪,测定宁强陨石的放射性宇宙成因核素,以了解该陨石的演化历史。
Ningqiang meteorites, as the first carbonaceous chondrites recorded in our country, aroused widespread interest and attention. According to the preliminary results of mineralogy and chemical composition, it is found that Ningqiang meteorites are similar to the famous Allende meteorites and belong to the same group of CVs. The determination of cosmogenic nuclides can provide important information about the size of the meteorite before entering the atmosphere and the age of exposure of the cosmic rays, and thus constitute an important part of meteorite research. Therefore, we use the newly developed low background γ spectrometer to measure the radioactive cosmic nuclide of Ningqiang meteorite to understand the evolution history of the meteorite.