裂变径迹定年法Zeta常数的测定  

Determination of Zeta Constant for Fission Track Dating

作　　者：翟鹏济[1] 赵云龙[1] 

机构地区：[1]中国科学院高能物理研究所,核工业北京地质研究院

出　　处：《岩矿测试》1996年第1期13-16,共4页Rock and Mineral Analysis

基　　金：国家自然科学基金

摘　　要：用第６届国际裂变径迹测定地质年代学术讨论会推荐的三种锆石、两种磷灰石和一种榍石国际年龄标样对Ｚｅｔａ值进行了系统刻度，对ＮＢＳ－ＳＲＭ６１２铀标准玻璃测定的锆石Ｚｅｔａ值为（３３５．６±８．２）ａｃｍ￣２，磷灰石（３４３．３±１４．６）ａｃｍ￣２，榍石为（３４７．７±１５．８）ａｃｍ￣２，三种矿物之间的Ｚｅｔａ值无很大差异，统一的加权平均Ｚｅｔａ值为（３３９．２±６．６）ａｃｍ￣２。The zeta constant is determined by making use of three zircon, two apatite and one sphene age standards which were recommended by the 6th International Fission Track Dating Workshop for the system calibration. The zeta values(a cm￣2)obtained in the determination of the dosimeter glass NBS-SRM 612 are 335. 6±8. 2(2 sigma) for zircon, 343. 3± 14. 6(2sigma) for apatite and 347. 7± 15. 8(2 sigma) for sphene.There are no significant differences in the values obtained from the three minerals.Asingle weighted-mean zeta constant(a cm￣2) is given as 339. 2±6. 6(2 sigma).

关 键 词：裂变径迹 定年法 Zeta常数 年龄标样 地质年龄 

分 类 号：P597[天文地球—地球化学]