论文部分内容阅读
一、引言 利用矿物中微量铀杂质在长久地质时间内发生的自发裂变的碎片径迹测定矿物年龄的方法,称为裂变径迹法。 1959年,E.C.H.西尔克(Silk)等人用电子显微镜看到,裂变碎片照射过的云母片内含有很细(直径约50埃)的辐射损伤径迹。1962年,P.B.普赖斯(Price)等人把带有这种辐射损伤径迹的云母放入氢氟酸中腐蚀(蚀刻)后,发现可以把辐射损伤径迹
I. INTRODUCTION The method of determining the age of a mineral by using fragments of spontaneous fission occurring during a long geologic time using trace uranium impurities in minerals is called fission track method. In 1959, E.C.H. Silk et al. Observed by electron microscopy that the mica flakes irradiated by fission fragments contained very small (about 50 Å in diameter) radiation damage tracks. In 1962, Price et al. (2006) put the mica with this radiation damage trail into a hydrofluoric acid for etching (etching) and found that the radiation damage track