能谱图绘制软件的设计
摘要：能谱仪(EDS,Energy Dispersive Spectrometer)是用于部件的材料和微量内容分析的类型，扫描电子显微镜和透射电子显微镜。 不同的元件具有其自己的特征x射线波长，波长特性取决于在水平交叉处分配的尺寸特征能量ΔE，EDS是使用具有不同特性的不同能量元素的X射线光子用于分量分析。63477
当X射线光子进入检测器后，在Si（Li）晶体内激发出一定数目的电子空穴对。产生一个空穴对的最低平均能量ε是一定的（在低温下平均为3.8ev），而由一个X射线光子造成的空穴对的数目为N=△E/ε，因此，入射X射线光子的能量越高，N就越大。使用施加到用于通过前置放大器收集电子 - 空穴对的晶体的偏置电压被转换为电流脉冲高度，脉冲电流取决于值N.通过主放大器的电流脉冲被转换为多级 - 通道脉冲高度分析仪，脉冲高度分析仪根据高度分类计数脉冲，于是可以利用X射线谱能量分布得到能谱图。
毕业论文关键字：能谱仪；元素；X射线；能量
Design of Software for Spectra Diagram Drawing
Abstract: EDS (Energy Dispersive Spectrometer) is used to analyze the types and contents of the elements in the micro-region of the material and cooperate with scanning electron microscopy and transmission electron microscopy. Each element has its own X-ray characteristic wavelength, the size of the characteristic wavelength depends on the energy released during the energy level transition E △ E, energy spectrometer is the use of different elements of X-ray photon energy characteristics of different characteristics of this component to analysis.When X-ray photons enter the detector, a certain number of electron-hole pairs are excited in the Si (Li) crystal. The lowest average energy ε for generating a pair of holes is constant (3.8 eV at low temperature) and the number of hole pairs caused by one X-ray photon is N = ΔE / ε, so that the incident X-ray photon The higher the energy, N the greater. Electron-hole pairs are collected by biasing at both ends of the crystal and converted into current pulses through a preamplifier. The height of the current pulses depends on the size of N. The current pulse is converted into a voltage pulse by the main amplifier and entered into a multi-channel pulse height analyzer. The pulse height analyzer counts the pulses by their height, so that an X-ray energy spectrum can be plotted.
Keywords: EDS; element; X-ray; energy
目录
1 绪论 1
1.1 本课题研究的意义 1
1.1.2 未来能谱图绘软件的研究发展前景广阔 1
2 C#汇编语言 3
2.1 C#汇编语言介绍 4
2.1.1 C#汇编语言 4
2.1.2 C#设计的特点 5
2.1.3 C#发展前景 6
2.1.4 C#的程序执行 7
3 JB6000串行口通讯协议 7
4 上位机和串口通信程序设计 7
4.1 上位机和下位机介绍