Resonance‐enhanced multiphoton ionization spectroscopy of X 1Σ+ and a 3Π carbon monoxide using electron stimulated desorption as a source for rovibronically excited species
Resonance‐enhanced multiphoton ionization spectroscopy of X 1Σ+ and a 3Π carbon monoxide using electron stimulated desorption as a source for rovibronically excited species
复制标题
使用电子刺激解吸作为振动激发物质源的 X 1Σ+ 和 3Π 一氧化碳的共振增强多光子电离光谱
DOI：
10.1063/1.472334
复制
发表时间：
1996
影响因子：
4.4
通讯作者：
D. Menzel
中科院分区：
文献类型：
--
作者：
S. Wurm;P. Feulner;D. Menzel
过渡金属表面化学吸附的 CO 单层和凝聚的 CO 层的电子刺激解吸被用作产生 CO 非热振动分布的新来源，通过共振增强多光子电离光谱 (REMPI) 探测。通过 (1+1)-REMPI 通过 A 1Π 和 D' 1Σ+ 中间态研究高度振动激发的基态 CO 分子，通过 b 3Σ+ 和 c 3Π 中间态研究亚稳态 CO 分子。通过 A 1Π (v′≥20) 的旋转分辨 (1+1) 光谱可以验证中间项能量，包括 A 1Π 态势垒的存在。通过 D' 1Σ+ 的 (1+1) 光谱提供了直接探测 D' 1Σ+ 电位曲线的可能性。发现了伴随 b 3Σ+←a 3Π (1+1) 光谱的附加光谱特征，这些特征无法用已知的扰动来解释。在气相 (2+1) 光谱中，通过 B 1Σ+ 和 C 1Σ+ 中间态，可以检测到 O- 和 S- 分支...
Electron stimulated desorption from CO monolayers chemisorbed on transition metal surfaces and from condensed CO layers were utilized as new sources for the production of nonthermal rovibrational distributions of CO probed by resonance‐enhanced multiphoton ionization spectroscopy (REMPI). Highly vibrationally excited ground state CO molecules were studied by (1+1)‐REMPI via the A 1Π and D′ 1Σ+ intermediate states, and metastable CO via the b 3Σ+ and c 3Π intermediate states. Rotationally resolved (1+1) spectroscopy via A 1Π (v′≥20) allowed the verification of the intermediate term energies, including the existence of a potential barrier for the A 1Π state. (1+1) spectroscopy via D′ 1Σ+ is shown to provide the possibility to directly probe the D′ 1Σ+ potential curve. Additional spectral features accompanying the b 3Σ+←a 3Π (1+1) spectra which cannot be explained by known perturbations were found. In gas phase (2+1) spectroscopy via the B 1Σ+ and C 1Σ+ intermediate states, O‐ and S‐branches could be detecte...