原子激发态的衰减情况。

How excited states of atoms decay.

这里的关键的地方是我,要你们找到第三激发态,第三激发态的n等于多少？

So the key word here is that we asked you to identify the third excited state. So, what white is n equal 4 Ok to for the third excited state? 4 OK.

关于电子激发态的计算,一直是理论化学的挑战.

The calculation of the electronically excited state is still a challenge in theoretical chemistry.

我们采用单激发组态相互作用 ( IS ) 法,对体系的激发态和光谱进行计算研究.

We calculate the excited states and spectra by the single excitation configuration interaction ( CIS ) methods.

这将使分子跃迁到另一个激发态，从中我们可以用另一种激光，把它分成两个原子。

This excites the molecule into another excited state, from which we can, with another laser light, break it down into two atoms.

结合循环伏安曲线图及五甲川菁的光吸收阈值，初步确定五甲川菁染料电子基态和激发态能级位置。

The ground state level and the excited state level of the dye were determined by using the cyclic voltammetry and the optical absorption spectroscopy.

因此，发生第一激发态跃迁时，将发生分子间电子转移，从而引起荧光猝灭效应。

It suggests that intermolecular electron transfer occurs during the transition of the first excited state, which results in the fluorescence quenching effect.

瞬态分子包括自由基、分子离子、分子激发态及其它一些短寿命的中性分子。

Transient molecules consist of free radicals, molecular ions, molecules in excited states, and other short-lived neutrals. The objective of this Ph.

荧光亏蚀谱的快衰减过程描述了激发态的振动弛豫过程，慢衰减过程反映了溶剂化效应。

The theoretical calculation agrees well with the experimental results. The fluorescence depletion reflects the molecular dynamics of the excited states.

摘要 ：化学发光分析是利用化学发光反应的发光现象，对化学发光物质由激发态跃迁回基态时发出的光信号进行测量的一种分析方法。

Abstract : Chemiluminescence (CL) assay is able to measure the optical signal emitted from the CL reagents as a result of the transition from the excited state back to the ground state.