Laser Excitation and Ionization in a Dense Li Vapor: Observation of the Even-Parity, Core-Excited Autoionizing States
Laser Excitation and Ionization in a Dense Li Vapor: Observation of the Even-Parity, Core-Excited Autoionizing States
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DOI：
10.1103/physrevlett.38.1390
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发表时间：
1977-06
影响因子：
8.6
通讯作者：
T. Mcilrath;T. Lucatorto
中科院分区：
文献类型：
--
作者：
T. Mcilrath;T. Lucatorto
在锂中首次观察到从激发态到自电离核激发能级的光学吸收。调谐至 1 s 2 2 s→ 1 s 2 2 p 共振的 1-MW 染料激光器在热管炉中产生约 10 16 个激发原子/cm 2 。获得了Li*(2p)和Li+的远紫外吸收光谱。给出了从受激中性粒子到 95% 离子的演化曲线，并讨论了 Li 观测对于理解电离机制的意义。
The first optical absorption from excited states to autoionizing core-excited levels has been observed in lithium. A 1-MW dye laser tuned to the 1 s 2 2 s→ 1 s 2 2 p resonance produced∼ 10 16 excited atoms/cm 2 in a heat-pipe oven. Far-uv absorption spectra of Li*(2 p) and Li+ were obtained. A curve of the evolution from excited neutrals to∼ 95% ions is presented, and the significance of the Li observations for understanding the ionization mechanism is discussed.