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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >New insights into the Jahn-Teller effect in NO3 via the dark A(2)E '' state
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New insights into the Jahn-Teller effect in NO3 via the dark A(2)E '' state

机译:通过暗A(2)E''状态对NO3中的Jahn-Teller效应的新见解

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The recent cavity ringdown (CRD) measurement of the forbidden A E-2 '' <- X (2)A(2) ' transition of the nitrate radical NO3 reveals a rich, well-resolved spectrum in the near-infrared. The spectroscopic detail provides a new window onto the Jahn-Teller (JT) and pseudo-Jahn-Teller (PJT) effects in NO3. This paper reviews the current experimental evidence for vibronic coupling in the A state and discusses the theoretical issues in the context of new preliminary EOMIP/CCSD and CCSD(T) calculations. The theoretical results to date indicate that the A E-2 '' state of NO3 undergoes a relatively strong JT distortion which may require inclusion of higher order vibronic couplings. The intensity of this transition may involve multiple intensity borrowing mechanisms via PJT coupling among the X, A and B states.
机译:最近对硝酸根自由基NO3的禁止的A E-2''<-X(2)A(2)'跃迁进行的腔衰荡(CRD)测量表明,在近红外光谱中具有丰富的分辨良好的光谱。光谱细节为NO3中的Jahn-Teller(JT)和伪Jahn-Teller(PJT)效应提供了新的窗口。本文回顾了当前A态振动耦合的实验证据,并在新的初步EOMIP / CCSD和CCSD(T)计算的背景下讨论了理论问题。迄今为止的理论结果表明,NO 3的A E-2''状态经历了相对较强的JT畸变,这可能需要包括更高阶的电声耦合。这种转变的强度可能涉及通过X,A和B状态之间的PJT耦合的多种强度借用机制。

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