ESR谱仪低温杜瓦瓶的研制及其在矿物学研究中的应用

文章介绍了ＥＳＲ谱仪低温杜瓦差的研制原理和方法以及应用它在液氮温度下研究孔雀石中的Ｃｕ＾２＋和天然刚玉中Ｔｉ＾３＋存在形式的实验结果。

DEVELOPMENT OF THE LOWER-TEMPERATURE DEWAR FLASK IN ESR AND ITS APPLICATION IN MINERALOGY

To make it extensively applied in mineralogy, ESR must have auxiliary appurtenances including crustal bidirectional spinning instrument and lower temperature instrument, so that we can study isomorphous replacement in minerals, local symmetry of crystal, nature of chemical bonds, order disorder, staining mechanism and gemology. This paper introduces the development of the lower temperature Dewar flask and presents the ESR results of Cu 2 in malaquita and Ti 3 in natural corundum under the temperature of liquid nitrogen. To the Cu 2 in malaquita by magnetic deliquation, there is only one ESR spectral line under room temperature, but four ESR spectral lines in two groups which are 2.0 and 2.2 in g under the temperature of liquid nitrogen. To the Ti 3 in corundum, there is no ESR spectral line, but there are two groups of ESR spectral lines under the temperature of liquid nitrogen, one group consists of eight spectral lines due to Ti 49 and the other, six spectral lines due to Ti 47 , which is 1.95 in g and A is 30 gauss. The above shows that, to some admixed ions, the ESR spectral lines related with fine, super fine and over super fine textures can be tested only under the temperature of liquid nitrogen.