In this paper, the construction of photoionization detect instrument based on AT89C52 chip is presented.
本文介绍了基于单片机at89c52的光离子化检测仪构建。
The photoionization of atoms and ions are studied theoretically by using the R-matrix method in this thesis.
本文利用R -矩阵方法对部分原子和离子的价壳层、内壳层光电离过程进行了较详细的研究。
The principle and performance of a home-made miniature photoionization ion trap mass spectrometer was introduced.
介绍了自行研制的紫外光电离离子阱质谱仪的原理和性能。
The using of chirped laser pulse can restrain the Rabi oscillations and realize high efficiency of photoionization.
利用光脉冲的啁啾效应，可以抑制拉比振荡实现高效率的光电离。
In order to understand the discharge mechanism deeply, in this paper, a simple model based on photoionization is developed.
为了深入了解这一放电现象的物理机制，采用基于光致电离的物理模型研究了这一现象。
Selectively ionizing atoms (or molecule) can be easily performed by means of a multistep resonance photoionization technique.
通过多步谐振光电离技术可以实现对原子(或分子)选择性的电离。
The principle of M0del 110 Photoionization Gas Analyzer is introduced, and its advantages aswell as specifications are described.
介绍了110型光离子化气体分析仪的原理、优点、技术指标。
04ev and appearance potentials of various fragment ions have been determined by measuring their photoionization efficiency curves.
通过质谱测量各离子的光电离效率曲线，得到了该分子的垂直电离能及主要碎片离子的出现势。
The equation of three step photoionization for describing the field and the density matrix as well as the atomic population was derived.
推导了三步光电离的场方程组和原子布居的密度矩阵方程组。
The present work also implies the photoionization cross-section oscillations of C60 have different origins for different photon energy regions.
本文还指出不同光子能量区域C60的光电离截面振荡有不同的原因。
The photoionization efficiency curve and the partial optical oscillator strength densities for different fragments of CO was determined by this work.
利用该装置测量了一氧化碳分子的光电离效率曲线及其离子碎片的部分光学振子强度密度。
In the second part, using the wave function and binding energy obtained from the first part, the photoionization cross-section of the impurity is calculated.
在第二部分，我们采用第一部分所选的变分波函数和得到的束缚能进一步计算了类氢杂质体系的光致电离截面。
The key part of photoionization detector is analyzed and designed. The principle, structure and characteristic of the system design is especially demonstrated.
对光离子化检测器的核心部分进行了分析与设计，着重阐述了系统设计的原则、结构及特性。
According to the detection demand of the weak photoionization signal, a new kind of data acquisition and processing system of photoionization signal is developed.
根据微弱光离子化信号的检测需要，开发出一种光离子化信号数据采集与处理系统。
An ethylene diffusion flame has been investigated at normal pressure using synchrotron vacuum ultraviolet (VUV) photoionization and molecular-beam mass spectrometry.
本文利用探针取样法结合同步辐射真空紫外光电离和分子束质谱技术研究了常压下的乙烯扩散火焰。
When the theory is applied to the photoionization of atoms in two-color laser fields, a qualitative agreement between the theory and the experiments is also obtained.
将它用于双色光场中的电离，也得到与实验结果定性上一致的结论。
The experimental and theoretical studies on the pulse preionization of high power CW CO2 laser are presented in this paper and the photoionization process ia emphersized.
本文给出了对高功率横流CO_2激光器脉冲预电离过程的理论和实验研究。 表明了预电离过程中光电离的重要作用。
In this case, many interesting phenomena of excitation and photoionization can be observed, for instance, muti-photon ionization, above threshold ionization, tunnel ionization and so on.
这样，我们就可以观察到一些新的现象，如多光子过程，阈上电离，隧道电离等。
The important role of collective excitation in the photoionization cross-section of C60 is suggested. Improvement of the model by taking into account the collective excitation is indicated.
然而，理论和实验的一些偏离表明集体激发在C60光电离截面中起重要作用，考虑集体激发的改进模型是必要的。
The important role of collective excitation in the photoionization cross-section of C60 is suggested. Improvement of the model by taking into account the collective excitation is indicated.
然而，理论和实验的一些偏离表明集体激发在C60光电离截面中起重要作用，考虑集体激发的改进模型是必要的。
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