STUDY OF LOW-LYING ELECTRONIC STATES OF OZONE BY ANION PHOTOELECTRON-SPECTROSCOPY OF O-3(-)
STUDY OF LOW-LYING ELECTRONIC STATES OF OZONE BY ANION PHOTOELECTRON-SPECTROSCOPY OF O-3(-)
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DOI：
10.1063/1.467745
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发表时间：
1994-07-15
影响因子：
4.4
通讯作者：
NEUMARK, DM
中科院分区：
文献类型：
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作者：
ARNOLD, DW;XU, CS;NEUMARK, DM
使用 O-3 阴离子光电子能谱研究了臭氧的低位电子态。光谱显示光脱离跃迁从 0(3)(-) 到波浪线 X(1)A(1) 基态的 ($) 以及臭氧分子的五个最低电子态，即 (3)A(2)、B-3(2)、(1)A(2)、B-3(1) 和 B-1(1) 态。根据 O(3)X(1)A(1) 基态谱的 Franck-Condon 分析确定的臭氧阴离子的几何形状与以前的工作相当吻合。激发态光谱以弯曲振动级数为主，对于某些状态，弯曲振动级数远远超出解离渐近线，而没有明显的寿命展宽效应。初步分配基于光电子角分布以及与从头计算的比较。正如先前的实验和理论结果所表明的，观察到的激发态均不低于 O-3 的基态解离极限。
The low-lying electron states of ozone are studied using anion photoelectron spectroscopy of O-3. The spectra show photodetachment transitions from 0(3)(-) to the ($) over tilde X(1)A(1) ground state and to the five lowest lying electronic states of the ozone molecule, namely the (3)A(2), B-3(2), (1)A(2), B-3(1), and B-1(1) states. The geometry of the ozonide anion determined from a Franck-Condon analysis of the O(3)X(1)A(1) ground state spectrum agrees reasonably well with previous work. The excited state spectra are dominated by bending vibrational progressions which, for some States, extend well above the dissociation asymptote without noticeable lifetime broadening effects. Preliminary assignments are based upon photoelectron angular distributions and comparison with ab initio calculations. None of the excited states observed lies below the ground state dissociation limit of O-3 as suggested by previous experimental and theoretical results.