4d-Shell Photoabsorption Spectra of Lanthanum- and Cerium-Halides
4d-Shell Photoabsorption Spectra of Lanthanum- and Cerium-Halides
复制标题
镧和铈卤化物的 4d 壳层光吸收光谱
DOI：
--
复制
发表时间：
1975
期刊：
影响因子：
--
通讯作者：
T. Sagawa
中科院分区：
文献类型：
--
作者：
Shoji Suzuki;T. Ishii;T. Sagawa
测量了LaF8、LaCl3、CeF3、CeCl8和CeBr3以及金属La和Ce的4d电子光吸收谱。光谱由两部分组成。一种是在阈值附近的线结构，另一种是在线结构之后的宽而强的带（巨带）。观察到的谱线结构的特点是独立的卤素和现有的原子理论计算的协议。另一方面，在镧卤化物的巨带的轮廓是依赖于卤素。发现镧卤化物的3D1线具有不对称的线形。在同步辐射照相法测量中，没有发现光谱的温度依赖性。
The photoabsorption spectra of 4d electrons have been measured on LaF 8 , LaCl 3 , CeF 3 , CeCl 8 , and CeBr 3 as well as on metallic La and Ce. The spectra consist of two parts. One is the line structure near the threshold and the other is the broad and intense band (giant band) following the line structure. The observed features of the spectra concerning the line structure are independent of halogen and in agreement with existing atomic theoretical calculations. On the other hand, the profile of the giant band in La-halides is dependent on halogen. The 3 D 1 line in La-halides is found to have an asymmetric line-shape. In the measurements by photographic method using synchrotron radiation, temperature dependence of the spectra is not detected.