气化及凝聚过程的Ga、Cu同位素分馏理论研究

本申请拟通过理论层面的研究，来解释和分析在天体形成早期所产生的的同位素分馏效应。确定导致类地行星等天体产生挥发性元素亏损的模型。精确计算碰撞过程导致的气化分馏效应以及随后的岩浆作用导致的熔融-气化过程的同位素分馏。解释类地行星样品的挥发性元素重同位素要相对于碳质球粒陨石更加富集的机制。模拟“大碰撞”过程的场景、后期改造（岩浆作用、陨石撞击等过程）的场景，精确计算它们产生的同位素分馏的差别，为解释这些同位素分馏数据提供理论依据。本申请选择Ga和Cu同位素体系为例，对气化过程的同位素分馏理论进行详细计算和分析。

This application intends to explain and analyze the isotopic fractionation effect in the early period of celestial body formation through theoretical research. Determine the model bring about the loss of volatile elements of terrestrial planets and other celestial bodies. The isotopic fractionation of the evaporation process resulting from the impact and subsequent magmatism is calculated accurately. Explain the mechanism by which the heavy isotopes of volatile elements in terrestrial planets’ samples are more abundant than in carbonaceous chondrites. To simulate the ‘giant impact’ and the scenes of post-transformation (magmatism, meteorite impact, et.), and accurately calculate the differences of isotopic fractionation produced by them, so as to provide theoretical basis for the interpretation of these isotopic fractionation data. In this application, Ga and Cu isotope systems are selected as examples to carry out detailed calculation and analysis of isotope fractionation theory of evaporation processes.