查询词典 photoionization

The photoionization mass spectrum and thephotoionization efficiency curves of the fragment ions are measured.

通过测量各离子的光电离效率曲线，获得了该分子的电离势和所有碎片离子的出现势。

Several transient compounds were synthesized by the homo- and heterogeneous reactions of reactive halogen compounds, In-situ ultraviolet photoelectron spectroscopy and photoionization mass spectroscopy as well as theoretical calculations were used to study their molecular structures, stability and molecular orbital properties, their electronic structures and geometric structures were obtained for the first time; Simultaneously, the electronic structure and thermal dissociation of acetyl peroxynitrate and trifluoroacetyl peroxynitrate which have great importance in the atmospheric chemistry were studied; The substituent effects of series of halopyridines and halothiophenes were studied by the ultraviolet photoelectron spectroscopy method for the first time. The atmospheric chemical reaction between peroxyacetyl radicals with IO radicals as well as the dissociation of the most stable isomer of CH3COIO3 were calculated by density functional theory, it was found that the CH3COOIO2 isomer may be act as a new reservoir of inorganic iodine in the stratosphere.

通过活性卤素的系列均相与非均相化学反应合成了几种瞬态物种，采用原位紫外光电子能谱和光电离质谱结合量子化学理论计算对化合物的分子结构、稳定性以及分子轨道特性进行了研究，首次获得了这些物种的电子结构和几何结构的信息；同时研究了大气中有重要作用的乙酰过氧硝酸酯和三氟乙酰过氧硝酸酯的电子结构性质及热解过程；采用紫外光电子能谱手段首次研究了系列卤代吡啶和噻吩的取代基效应；通过量子化学理论计算研究了乙酰基过氧自由基与IO自由基的大气化学反应及其最稳定异构体CH3COOIO2的解离，发现该物种可能是无机碘化合物在平流层中的储库物种。

All the atomic and molecular systems are subject to photoionization and photodissociation.

所有的原子和分子系统都受光致电离和光致离解的影响。

The method of photoionization mass spectroscopy using synchrotron radiation is introduced. The fundamental photodissociation mechanism is given.

介绍了真空紫外同步辐射光电离质谱研究的方法，以及各种基本的光解离反应的机理。

Photoionization and photodissociation are the two main product channels following the interaction of the molecules with laser.

光电离和光解离是分子与激光作用后两种主要的反应途径。

In chapter two, the basic principles of REMPI technique are introduced including the resonance enhanced effect, the selection rule, the mechanism of photoionization and photodissociation, REMPI rate equation and the property of Rydberg state.

第二章介绍了REMPI技术的基本原理，包括多光子共振跃迁的选择定则、电子态的光解离机理、描述REMPI过程的速率方程和分子Rydberg态的性质。

In addition,a reasonable theory is used to explain the photoionization process.

除此之外，我们还对整个光电离过程进行了合理的理论解释。

In the first part,theoretical research is performed on the photoionization process of Nal molecule.

在第一部分中我们首先对NaI分子的光电离过程进行了理论研究。

In ChapterⅢ,the theoretical study of photoionization process about I_2~- ion is performed.

第三章我们对I_2~-离子的光电离过程进行了理论研究。

More accurate results were obtained by using the new approach to calculate resonance structure and photoionization cross section.

本文使用多体微扰理论对锰原子及其离子光电离过程中光电离截面和共振结构进行了全面的理论研究和计算。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。