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太阳系物质原始同位素异常的发现,是七十年代在宇宙化学领域中的一项重大突破,对恒星核合成模型、太阳系形成理论和行星演化学说将有意义深远的影响。 按照元素起源的现代理论,需要有多种发生在不同物理条件、时间尺度和地点的核合成过程,才能解释太阳系物质的元素丰度和同位素组成;同一元素的不同同位素往往是在不同的核合成过程中产生的。因此,如果不同核合成过程的产物在太阳系形成之前没有能够均匀地混合,那么可以预料,在不同行星体的样品中,就有可能观测到同位素组成的变化。
The discovery of the original isotopic anomalies in the solar system is a major breakthrough in the field of cosmic chemistry in the 1970s and will have far-reaching implications for the stellar nuclear synthesis model, the solar system formation theory and the planetary evolution theory. According to the modern theory of element origin, there are many nuclear synthesis processes that need to occur in different physical conditions, time scales and locations in order to explain the elemental abundance and isotopic composition of solar matter substances; different isotopes of the same element are often found in different nucleosynthesis Produced during the process. Therefore, if the products of different nuclear synthesis processes are not uniformly mixed before the formation of the solar system, it is expected that in the samples of different planets, it is possible to observe changes in the isotopic composition.