| 原子束激光诱导荧光法测锂原子2~2P←2~2S跃迁的超精细结构和同位素位移 |
| |
| 引用本文： | 李明光,王荫德,王崇业,李丽,史方永,余世英,黄上俊,蔡增良,李君翔,冯泽,张一,朱清时.原子束激光诱导荧光法测锂原子2~2P←2~2S跃迁的超精细结构和同位素位移[J].中国激光,1982,9(7):434-438. |
| |
| 作者姓名： | 李明光 王荫德 王崇业 李丽 史方永 余世英 黄上俊 蔡增良 李君翔 冯泽 张一 朱清时 |
| |
| 作者单位： | 中国科学院青海盐湖研究所
(李明光，王荫德，王崇业，李丽，史方永，余世英，黄上俊，蔡增良，李君翔，冯泽，张一)，中国科学院青海盐湖研究所(朱清时) |
| |
| 摘 要： | 发散角为4.7×10~(-3)弧度,残余多谱勒宽度7兆赫的原子束与线宽6兆赫的可调谐染料激光正交,激光频率在30千兆赫范围扫描,测得~6Li和~7Li的2~2P能级的精细结构分裂分别为9.7±0.4和10.5±0.5千兆赫,2~2P_(1/2)能级的同位素位移为10.7±0.6千兆赫。激光频率作2.5千兆赫扫描,测得~7Li的2~2P_(1/2)←2~2S_(1/2)跃迁的四条超精细结构谱线的间距依次为88±11、730±73和92±7兆赫,当光强为4毫瓦/厘米~2时,记录的谱线宽度为22兆赫。对影响谱线宽度、相对强度及测量精度的一些因素也进行了讨论。
|
| 收稿时间： | 1981/7/31 |
Measurement of fine and hyperf ine structures and isotope shift in 22P←22S transition of lithium by laser induced fluorecence of atomic beams |
| |
| Abstract: | When a CW tunable dye laser beam with a linewidth of 6 MHz and a divergence of 4.7 x 10-3 radian irradiated across a Li atomic beam at right angle and scanned at the 30 Q Hz range, we recorded the fine and hyperfine structure of the transitions. Fine splittings in 22P terms of 6Li and 7Li have been measured to be 9.7+0.4 GHz and 10.5+0.5 GHz, respectively, and the isotope shift of 22P1/2 term being 10.7 + 0.6 GHz. With a scanning range of 2.5 GHz, spacinga of the successive lines of 7Li 22P1/2-22Si/2 transitions have been measured to be 88+llMHz, 730 + 73MHz and 92+7MHz, respectively. With a laser intensity of 4mW/cm2 and the oven temperature of 460C, the recorded linewidth was about 22 MHz. A number of factors affecting the linewidth, the relative strength of lines and the accuracy of measurement are discussed. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
