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A simple resonance enhanced laser ionization scheme for CO via the A(1)Pi state

机译:通过A(1)PI状态的CO的简单共振增强激光电离方案

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We investigate the laser ionization process taking place when the CO molecule is exposed to vacuum ultraviolet (VUV) radiation resonant with the CO A(1)Pi (v = 0) <- X-1 Sigma(+)(v = 0) transition around 154 nm, along with the ultraviolet (UV) and visible (Red) radiation used to generate VUV by four-wave difference-frequency mixing. By measuring the CO+ ion recoil and a room temperature gas spectrum, it is possible to assign the ionization process as 1 + 1' + 1 '' REMPI where the one-photon steps refer to the VUV, UV, and Red radiation, respectively. Resonance enhanced ionization of rotational states around J = 12 arise due to the overlap of the fixed wavelength UV (similar to 250 nm) with the R band-head of a transition assigned to CO E-1 Pi(v = 6) <- A(1)Pi(v = 0) with a term value of 104 787.5 cm(-1). The REMPI process is efficient and polarization sensitive and should be useful in a wide range of studies involving nascent CO. Published by AIP Publishing.
机译:当CO分子暴露于真空紫外线(VUV)辐射与CO(1)Pi(v = 0)<-x-1 sigma(+)(v = 0)过渡时,研究激光电离过程 大约154nm,以及用于通过四波差频混合产生Vuv的紫外(UV)和可见(红色)辐射。 通过测量CO +离子反冲和室温气体光谱,可以将电离过程分配为1 + 1'+ 1'Rempi,其中单光子步骤分别是指Vuv,UV和红色辐射。 由于固定波长UV(类似于250nm)与分配给CO E-1 PI(v = 6)<-a的转变的R带头的重叠,产生围绕J = 12周围的旋转状态的旋转状态的电离出现。 (1)PI(v = 0),术语值为104 787.5cm(-1)。 REMPI过程是有效且极化敏感的,并且在广泛的研究中应该有用涉及Nascent CO的研究。由AIP发布发布。

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