机构地区: 五邑大学数学物理系
出 处: 《原子与分子物理学报》 1999年第3期381-384,共4页
摘 要: 应用可调谐相干VUV辐射源和热电离二级管得到了CaⅠ的双激发态3d6p和3d4f的高分辨光谱,测出了相应谱线的波长,并测得变窄了的3d6p1P1的谱线宽度为1.5,明显地观察到3d6p和3d4f三重态中P态与D态线型对称性反转的现象,并对上述线宽变窄和线型对称性反转现象的机理作了探讨。 High resolusion experemental spectra are reported for 3d6p and 3d4f doubly excited resonances of Ca Ⅰ. These were obtained by use of a tunable coherent VUV source and a thermionic diode detector. The wave lengths of the spectra and the width of 3d6p 1P 1 were measured, and the value of the width is 1 5. Symmetry of lineshape reversals effect was observed apparently from the P and D triple states of 3d4f as well as 3d6p and was investigated along with the wanishing width effect.