Standard test procedures for semiconductor x - ray energy spectrometers
Surface composition analysis method of gold - plated products by edx
Nondestructive method of x - ray eds analysis with sem for gold jewelry
General specification of x - ray eds quantitative analysis for epma and sem
However , the beam spectrum of a ct system is not constant normally
Standard test procedures for semiconductor x - ray energy spectrometers ; amendment 1
Identification method of authigenic clay mineral in sedimentary rock by sem xeds
General specification of thin biological standards for x - ray - ray eds microanalysis in electron microscope
Paper and board . qualitative analysis of mineral filler and mineral coating . sem edax method
Measurement procedures for semiconductor x - ray detector system and semiconductor x - ray energy spectrometers
用x射线能谱造句挺难的，這是一个万能造句的方法
Especially , the algorithm obtains the phantom ' s mass attenuation coefficient and spectrum of the ct system at the same time
In order to eliminate the beam - hardening artifacts , most current correction algorithms have to assume that the x - ray beam spectra are known and the mass attenuation coefficients of the detected object related to different energy are given
Firstly , an estimation algorithm for spectrum of the ct system is presented in the paper by using a standard cylinder or wedge phantom , where the mass attenuation coefficient of the contained material of the phantom is not necessarily to be known
The bioactivity of the anodized substrate is evaluated when it is subjected to alkali and heat treatment to form a sodium titanium hydrogel and bonelike apatite on the surface of titanium alloys in simulated body fuild ( sbf ) with ion concentrations near ly equal to those of human blood plasma
In order to understand the origin of lead in air , proton microprobe was used to measure pm10 environmental monitoring samples of wusong district , shanghai city , and lead pollution origin of this district was studied with micro - pixe spectrum " fingerprint " combined with pattern recognition technique
The commonly seen gold - carrying minerals in hard - to - leach gold ores - pyrite and arsonpyrite were used in the experiment . through sweep electron microscope ( sem ) and energy dispersive x - ray spectrometer ( edx ) , the change law of the shape and appearance characteristics of the gold - carrying minerals under the mechanical activation function of drum grinding and other activation function were studied so as to provide a reliable basis for the study on the mechanism of the effect of mechanical activiation on the intensification of leaching process
In the present work , the chemical distributing , the microstructure characteristics and the fractorgraphy analysis of metal / metal fgm are studied systematically by using electron probe microstructure analysis ( epma ) , scanning electron microscopy ( sem ) and energy dispersive x - ray analysis ( eds ) . as a result , some ideas about the fabrication are put forward
Following is our main work and important conclusions : ( 1 ) the question of energy spectrum hardening . we used the klein - nishina ' s differential scatter formula , meanwhile utilize the thaler progression to spread out , and neglected the high - power , and then we deduced a theoretical formula of correction of energy spectrum hardening
Reference to the convention means of the analysis and research for energy spectrum hardening and photon scattering in internal and external , and based on the physical mechanism of radial interacts with matter , this paper approximatively deduce a theoretical formula of correction of energy spectrum hardening and scattered radiation in transmission industrial x - ray computerized tomography from a ideal model . and presented a correction computer program
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