NiI[14.6]~2 △_(5/2)-X~2 △_(5/2) (9,0)带的超精细结构(英文)

• 作 者: 张仕中
• 机 构: 香港大学化学系 香港
• 出 处: 化学物理学报
• 发表日期: 2004年03期
• 关键词: 超精细结构 X~2 NiI[14.6 激光蒸发 光谱显示 未成对电子 可见光范围 微扰 线宽 耦合情况

在可见光范围内 ,用激光蒸发 /反应、超声射流和激光诱导荧光光谱方法 ,对NiI[14 .6 ]2 △5/ 2 -X2 △5/ 2跃迁的 (9,0 )带进行了高分辨研究 .80MHz分辨的光谱显示超精细结构是由于激发态中未成对电子与碘 (I=5 /2 )核大磁矩相互作用引起的 .在v =9能级上低J谱线的超精细线宽快速下降 ,表明在 [14 .6 ]2 △5/ 2 态中超精细耦合适合Hundaβ 耦合情况 .[14 .6 ]2 △5/ 2 态的精确转动参数和超精细参数已得到 ,而且显示v =9能级被微扰了 .

The (9,0) band of the NiI [14.6] 2Δ5 / 2 -X2Δ5 / 2 transition was highly resolved in the visible range by laser evaporation / reaction, ultrasonic jet and laser-induced fluorescence spectroscopy The 80 MHz resolved spectrum shows that the hyperfine structure is due to the interaction of the unpaired electrons in the excited state with the large magnetic moment of iodine (I = 5/2) nucleus. The hyperfine J spectrum at the v = 9 level The linewidth decreases rapidly, indicating that hyperfine coupling is suitable for Hundaβ coupling in the [14.6] 2Δ5 / 2 state. [14.6] The exact rotational and hyperfine parameters of the 2Δ5 / 2 state have been obtained and are shown v = 9 level was perturbed.