近十几年来,考古和地质上测定年代的方法已获得了很大发展,其中用热释光方法测定年代已对许多物质进行了广泛研究。与之相应,出现了一种用辐射诱发方解石缺陷的电子自旋共振(ESR)法,它特别适用于测定钟乳石、石笋等石灰岩洞穴中沉积物的年龄,这在地质学、考古和人类学研究中具有重要意义。电子自旋共振法是一种磁共振微波光谱学方法,早在六十年代就已开始研究,广泛用于辐射化学、生物化学及物理学中。ESR波谱,可用以检测物质中不成对电子自旋或被俘获电子的基因,是研究同体中辐射效应和鉴 In recent decades, archeological and geochronological dating methods have been greatly developed, of which many have been extensively studied by the thermoluminescence method. Correspondingly, there has been an Electron Spin Resonance (ESR) method using radiation-induced calcite defects, which is particularly suitable for determining the age of sediments in limestone caves such as stalactites and stalagmites. This has been the case in geology, archeology and anthropology In the great significance. Electron spin resonance method is a method of magnetic resonance spectroscopy, as early as the sixties has begun to study, widely used in radiation chemistry, biochemistry and physics. ESR spectroscopy, which can be used to detect unpaired electron spins or trapped electrons in a gene, is a study of the effects of radiation in vivo