同步辐射X射线荧光光谱及应用

一、同步辐射光由于常规X射线源(如:X-光管;放射性同位素)的强度低,散射背景高,使得X射线荧光光谱(XRF)法的检测限不如其他一些方法低。借助于化学预富集(如:共沉淀,萃取,离子交换…),检测限虽下降1~2个数量级,却牺牲了其他方面的优点。

Synchrotron Radiation Topographic Study on the Dislocations in Lithium Tetraborate Crystal

The dislocations in lithium tetraborate crystal have been investigated by means of synchrotron radiation white beam topography in BSRL(Beijing Synchrotron Radiation Laboratory).The Burgers'vectors of these dislocations are determined by their vanishing conditions.Both screw and edge dislocations exist in the specimen.