铯分子吸收光谱的实验研究  

Experimental Study on the Absorption Spectrum of Cs_2

作　　者：王贵平[1] 汪丽蓉[2] 

机构地区：[1]长治学院电子信息与物理系,山西省长治市城北东街73号046011 [2]山西大学物理信息与电子工程学院,太原市030006

出　　处：《光谱实验室》2010年第4期1586-1589,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：在封闭的热管炉对充有纯铯碱金属的玻璃泡进行加热和在大功率的氙灯作为非相干光源的条件下采用高分辨的AvaSpec-2048FT多通道光谱仪对铯分子蒸汽吸收光谱进行了测量,获得了325—810nm波长范围内铯分子电子态跃迁的吸收光谱,观测到了奇特的扩散带吸收谱线,并且扩散带吸收强度不依赖于温度,其中对应铯分子1(a)3∑u+→23Πg(0g+,-,1g,2g)三重态的跃迁,中心在706.6、713.2nm和719.0nm处的扩散吸收带最为明显,为研究超冷铯分子吸收谱提供了波长参考数据。Cs2 absorption measurements was performed using a sealed-off heat-pipe oven heated the cesium vapor,the xenon lamp as non-coherent light source,and Cs2 electronic transition absorption spectrum was measured by the high-resolution multi-channel.The wavelength region is 325—810nm.The peculiar diffuse bands were observed and their absorption intensity was independent from temperature.The diffuse bands 1（a）3∑＋u→23Πg（0＋,-g,1g,2g） were outstanding,corresponding wavelengths are 706.6,713.2nm and 719.0nm,the numerical values would be as reference for cold Cs2 absorption measurements.

关 键 词：扩散带 铯分子 吸收光谱 

分 类 号：O657.39[理学—分析化学]