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The carbon and oxygen K-edge NEXAFS spectra of CO+

机译:CO +的碳和氧气K-Edge Nexafs光谱

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摘要

We present and analyze high resolution near edge X-ray absorption fine structure (NEXAFS) spectra of CO(+)at the carbon and oxygen K-edges. The spectra show a wealth of features that appear very differently at the two K-edges. The analysis of these features can be divided into three parts; (i) repopulation transition to the open shell orbital - here the C(1s) or O(1s) to 5 sigma transition, where the normal core hole state is reached from a different initial state and different interaction than in X-ray photoelectron spectroscopy; (ii) spin coupled split valence bands corresponding to C(1s) or O(1s) to pi* transitions; (iii) remainder weak and long progressions towards the double ionization potentials containing a manifold of peaks. These parts, none of which has correspondence in NEXAFS spectra of neutral molecules, are dictated by the localization of the singly occupied 5 sigma orbital, adding a dimension of chemistry to the ionic NEXAFS technique.
机译:我们在碳和氧k边缘处呈现并分析CO(+)的边缘X射线吸收细结构(NexaFs)光谱附近的高分辨率。 光谱显示出在两个k边缘出现非常不同的丰富特征。 这些特征的分析可分为三个部分; (i)重新填充到开放壳体轨道的过渡 - 这里的C(1s)或O(1s)至5 sigma过渡,其中常规芯孔状态从不同的初始状态和不同的相互作用达到而不是在X射线光电子谱中 ; (ii)对应于C(1S)或O(1S)的旋转耦合的分割价带至PI *过渡; (iii)剩余弱点和含有峰歧管的双电离电位的较长进展。 这些部分,没有其中在中性分子的NexaFs光谱中具有对应关系,由单独占用的5个σ轨道的定位决定,将化学的尺寸加入离子NexaFS技术。

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    Royal Inst Technol Dept Theoret Chem &

    Biol Sch Chem Biotechnol &

    Hlth SE-10691 Stockholm Sweden;

    Uppsala Univ Dept Phys &

    Astron Box 516 SE-75120 Uppsala Sweden;

    Royal Inst Technol Dept Theoret Chem &

    Biol Sch Chem Biotechnol &

    Hlth SE-10691 Stockholm Sweden;

    IPCF CNR Via Moruzzi 1 I-56124 Pisa Italy;

    Lund Univ Dept Phys Box 118 S-22100 Lund Sweden;

    Helmholtz Zentrum Berlin Mat &

    Energie Abt Hochempfindl Rontgenspektroskopie Albert Einstein Str 15 D-12489 Berlin Germany;

    Helmholtz Zentrum Berlin Mat &

    Energie Abt Hochempfindl Rontgenspektroskopie Albert Einstein Str 15 D-12489 Berlin Germany;

    Helmholtz Zentrum Berlin Mat &

    Energie Abt Hochempfindl Rontgenspektroskopie Albert Einstein Str 15 D-12489 Berlin Germany;

    Helmholtz Zentrum Berlin Mat &

    Energie Abt Hochempfindl Rontgenspektroskopie Albert Einstein Str 15 D-12489 Berlin Germany;

    Albert Ludwigs Univ Freiburg Phys Inst Hermann Herder Str 3 D-79104 Freiburg Germany;

    Helmholtz Zentrum Berlin Mat &

    Energie Abt Hochempfindl Rontgenspektroskopie Albert Einstein Str 15 D-12489 Berlin Germany;

    Uppsala Univ Dept Phys &

    Astron Box 516 SE-75120 Uppsala Sweden;

    Uppsala Univ Dept Phys &

    Astron Box 516 SE-75120 Uppsala Sweden;

    Lund Univ Dept Phys Box 118 S-22100 Lund Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;化学;
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