2.Micro beam x-ray fluorescence spectrometer and its application to thedistribution of elements of pine needles.微束x射线荧光分析谱仪及其对松针中元素的分布分析。
SEM方面:(EDS作为SEM的一个配件,EDX的探头伸进SEM的真空腔内) 加速电压HV/EHT:通常需要有一个过压比,即加速电压必须大于特征X谱线能量,通常是2~3 倍;对于轻元素,比如F,C等,一般用5KV,而对于金属元素则需要20KV; 探针电流/束流/束斑尺寸(SpotSize / Beam Current):让灯丝处于饱和状态以获得稳定的束流; 光...
Energy-dispersive X-ray spectroscopy (EDS, also abbreviated EDX or XEDS) is an analytical technique that enables the chemical characterization/elemental analysis of materials. A sample excited by an energy source (such as the electron beam of an electron microscope) dissipates some of the absorbed...
A method for energy-dispersive X-ray diffraction mapping is presented, using a conventional low-power benchtop X-ray fluorescence spectrometer, the Seiko Instruments SEA6000VX. Hyper spectral X-ray maps with a 10m step size were collected from polished metal surfaces, sectioned Bi, Pb and steel...
1 Introduction to Energy Dispersive X-ray Spectrometry (EDS) 1. Introduction 1.1 Principles of the technique EDS makes use of t..
TM Series Energy Dispersive X-Ray Spectrometers: AZtec Series. The TM4000 Series offers multiple EDS systems to choose from based on application and budget. Two classes of detectors are available: a low-cost 10-mm2 detector and a large-sized 30-mm
X-Ray Tube: End window Ag anode, 50 kV 4 W Detector(s): High performance silicon drift detector (SDD) Citations: (1) Get Quote Compare EDX-7200 Energy Dispersive X-ray Fluorescence Spectrometer Shimadzu Element Range: 11Na to 92U
2.无标样定量分析:标样X射线强度是通过理论计算或者数据库进行定量计算。大多数元素定量分析的相对误差为+/-5%。注意:EDS定量分析的相对误差与元素含量有关:元素含量>20wt%,相对误差<5%3wt%<元素含量<20wt%,相对误差<10%1wt%<元素含量<3wt%,相对误差<30%0.5wt%<元素含量<1wt%,相对误差<50%。[2] 图3 ...
Introduction to Energy Dispersive Xray (介绍了能量色散x光).pdf,Introduction to Energy Dispersive X-ray Spectrometry (EDS) 1. Introduction 1.1 Principles of the technique EDS makes use of the X-ray spectrum emitted by a solid sample bombarded with a foc
高能偏振能量色散X射线荧光光谱仪 1. The analytical features of high-energy polarized energy dispersive X-ray fluorescence spectrometer and its application in trace element analysis in environmental,biological,geological and RoSH samples were introduced in this paper. 对高能偏振能量色散X射线荧光光谱仪基本...