内生地质作用中的高能核反应

On the basis of data on isotope and element abundance in meteorites and erustal rocks and in the light of nuclear physical experiments, it is suggested that the differentiation of crustal material (including magmatism and ore-generation process) from the mantle is accompanied by high-energy nuclear reactions. This knowledge would provide important insights into the process of endogenic ore genesis. For example, the spallation reactions of antimony and high-energy fission of uranium may all result in large amount of lighter isotopes of tin. This among other things probably accounts for the enrichment of terrestrial eassiterite in light isotopes of tin. Under the conditions where spallation reactions is dominant, the oremetal association of Sn, W, Ta, Hf, ∑Y results; where high-energy fissions prevail,the association of Sn, Mo, Nb, Zr, ∑Ce takes place; and dominant low-energy fissions might give rise to the association of Mo, Nb, Zr, ∑Ce. If a combination of various nuclear reactions is involved, a more wide speetrum of ore-metal association may be brought about.     

宁波铁陨石宇宙成因核的测定

The Ningbo iron meteorite fell near Ningbo, Chekiang province, on October 4,1975. 103 days later, γ-ray spectrum of the meteorite, was undestructively measured by a low-level γ-ray spectrometer. It is shown that the specific activity of Mn^34 present in the Ningbo iron meteorite is ap proximately close to that of Mn^34 in the Bogou and Aroos meteorites, while the specific activity of Co^37 seems to be higher in the Bogou and Aroos than in the Ningbo.     

银河系化学元素的丰度特征和合成图像（II）：太阳系原始同位素丰度？…

太阳系原始同位素组成是研究太阳系起源和演经的基础,评述了太阳星云的原始放射性核素丰度特征及解释此丰度特征的分子云自增丰模型,ＡＧＢ星污染模型和散裂反应模型,阴石包体中前太阳矿物颗粒的同位素组成异常表明,前太阳颗粒只氏密度石墨,Ｘ型碳硅石可能来源于超新星爆发,而ＡＧＢ星或红巨星被认为尖晶石和碳硅石的最可能的恒星来源,太阳系中比较特殊的氖和氙的同位素组成异常出现与超新星爆发密切相关。     

氢的孪生兄弟：氘

在不到煮熟一个鸡蛋所需的时间里,宇宙大爆炸之后的核反应便产生了化学元素周期表中最轻的原子核。宇宙的最初3分钟见证了氢、氘、氦3、氦4和锂7的形成。天文学家把所有比氦重的元素——从锂开始,到赋予生命的碳和氧以及珍贵的金等——都称为“金属”。     

利用光致核效应測定岩石样品中鈹元素的含量

一、 ₄Be⁹是鈹元素唯一的稳定同位素,可以利用鈹核的光致核反应:₄Be⁹（γ,n）₄Be⁸来測定岩石样品中鈹的合量;此反应要求γ射綫的能量大于中子在鈹核中的結合能。