北京正负电子对撞机（ＢＥＰＣ）国家实验室的增频（或扭摆）磁铁（Ｗｉｇｇｌｅｒ）光源（储存环电子能量２．２ＧｅＶ；最大束流强度７５ｍＡ）提供的同步辐射（ＳＲ）白光，激发ＬＲＥＥ　Ｋ－系线，用ＳＲＸＲＦＭ扫描分析氟碳铈矿物中的轻稀土元素（Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ）的分布。取同一矿区的氟碳铈矿物，粉碎至粒度＜３００目。一部分熔融，沉淀分离，转成稀土氧化物后，用ＸＲＦ法分析稀土分量。另一部分，不加任何粘结物质，压成Φ２６ｍｍ（１５ｇ）圆片作为ＳＲＸＲＦＭ扫描分析的参比样品，从而可计算样品中稀土的含量。 Synchrotron radiation (SR) white light from the Beijing Institute of Electron-Positron Collider (BEPC) National Laboratory’s Wiggler light source (storage ring electron energy 2.2 GeV; maximum beam intensity 75 mA) is excited LREE K-line, the distribution of light rare earth elements (La, Ce, Pr, Nd, Sm, Eu) in bastnaesite minerals was analyzed by SRXRFM. Take the same mining area bastnaesite minerals, crushed to a particle size of <300 mesh. Part of the melting, precipitation separation, converted to rare earth oxides, the XRF analysis of rare earth components. The other part, without any bond, was pressed into a Φ26mm (15g) wafer as a reference sample for SRXRFM scan analysis to calculate the rare earth content in the sample.