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陨星体从其母体最后一次碎裂出来单独运行在宇宙空间的漫长过程中,直接暴露于宇宙辐射场中,接受了银河宇宙射线和太阳宇宙射线的照射,于是在陨星体内产生了各种高能和低能的核反应,形成多种稳定的和放射性的同位素(一般称为宇宙成因核素),从而使陨石物质的某些同位素组成产生变异。通过对陨石宇宙成因核素产额、分布、同位素组成等的研究,可以使我们了解到宇宙射线引起的核反应机制与特征,并为目前人工加速器达不到的更高能的粒子轰击实验提供合理的推测;能够计算从母体最后一次破碎并分裂出该陨石的年龄(即宇宙暴露年龄)及估算陨星运行的空间轨道参数(如远日距等),以确
The meteorite body, which broke apart from its parent body and ran alone in cosmic space for a long time, was exposed directly to the cosmic radiation field and was exposed to galactic cosmic rays and cosmic cosmic rays. As a result, various meteoric energies Low energy nuclear reactions, the formation of a variety of stable and radioactive isotopes (commonly known as the cosmic nuclide), so that some of the isotopic composition of meteorite material variation. By studying the cosmic nuclide yield, distribution and isotopic composition of the meteorites, we can understand the nuclear reaction mechanism and characteristics caused by the cosmic rays and provide the reasonable high-energy particle bombardment experiments that the current artificial accelerators can not reach Speculate; be able to calculate from the mother last broken and split the meteorite’s age (ie, the age of the universe exposed) and to estimate the meteorite movement orbital parameters (such as far-day distance, etc.)