نتایج جستجو برای: ray fluorescence xrf

تعداد نتایج: 404863  

2014
N. L. Misra Sangita Dhara

Total reflection X-Ray Fluorescence (TXRF) is a comparatively new technique of material characterization and trace element analysis. It is an advanced variant of Energy Dispersive X-ray Fluorescence (EDXRF) and is based on the principle of total reflection of X-rays when these radiations fall on a flat smooth surface at a grazing angle less than the critical angle of the sample support. The cri...

Journal: :Metals 2022

There is an urgent need for the accurate analysis of heavy metal contamination in field ecology and environmental sciences, especially case trace metals, such as cadmium. Using doubly curved crystals (DCC) to achieve monochromatic X-ray excitation sample be measured a silicon drift detector (SDD) collect fluorescence elements, combined with algorithm fundamental parameters (FP), energy-dispersi...

1998
K. O. Goyal J. W. Westphal

Deposition of borophosphosilicate glass (BPSG) films as dielectrics is one of the many steps involved in semiconductor device manufacturing. Accurate control of boron and phosphorus concentrations in these films, is essential in maintaining desired film properties. The narrowing process specification limits with the industry trend towards shrinking device sizes, is putting an increasing demand ...

2015
Asghar Maziar Daryoush Shahbazi-Gahrouei Mohammad Bagher Tavakoli Vahid Changizi

BACKGROUND Using hair samples to analyze the trace element concentrations is of interest among many researchers. X-ray fluorescence (XRF) and X-ray diffraction (XRD) are the most common methods in studying the structure and concentration of elements of tissues and also crystalline materials, using low energy X-ray. OBJECTIVES In the present study, the detection ability of Wave Length X-ray Fl...

A. Mashinchian moradi B. Amirpour M. H. Givianrad R. Fazaeli S. Jalilehvand

In this investigation we synthesized NaX-Nanozeolite by hydrothermal crystallization conditions.These nanoparticles were prepared at different conditions in a temperature controlled shaker. Thesynthesized zeolites were characterized by instrumental analysis methods, such as X-raydiffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM) andtransmission electron microscopy (...

Journal: :journal of mechanical research and application 2012
hamid khorsand nasim kiayee amir hossein masoomparast

in this study chemical method of dissolution-precipitation was applied to produce amorphous silica nanoparticles from rice straw ash (rsa), the waste material of rice cultivation. the morphology, particle size, structure and area of specific surface of synthesized amorphous silica nanoparticles were evaluated using transmission electron microscopy (tem), x-ray diffraction analysis (xrd) and bet...

Journal: :Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2021

This paper represents an attempt to link different techniques such as laser and X-ray fluorescence (XRF). Where we used the in preparation X-rays diagnose analyze for non-traditional samples. The experimental procedure of LSP is done by using a convergent lens deliver 600 mJ (1064 nm) energy 10 ns pulse produced Q-switched Nd:YAG 1.5 mm spot size diameter. Doubled distilled deionized water (DDD...

2018
Björn De Samber Eline Meul Brecht Laforce Boel De Paepe Joél Smet Michiel De Bruyne Riet De Rycke Sylvain Bohic Peter Cloetens Rudy Van Coster Peter Vandenabeele Tom Vanden Berghe

Synchrotron radiation based nanoscopic X-ray fluorescence (SR nano-XRF) analysis can visualize trace level elemental distribution in a fully quantitative manner within single cells. However, in-air XRF analysis requires chemical fixation modifying the cell's chemical composition. Here, we describe first nanoscopic XRF analysis upon cryogenically frozen (-150°C) fibroblasts at the ID16A-NI 'Nano...

2016
Lin Xiao Bin Zhao Piaopiao Duan Zhixiang Shi Jialiang Ma Mingyue Lin

Fourteen samples of No. 6 coal seam were obtained from the Chuancaogedan Mine, Jungar Coalfield, Inner Mongolia, China. The samples were analyzed by optical microscopic observation, X-ray diffraction (XRD), scanning electron microscope equipped with an energy-dispersive X-ray spectrometer (SEM-EDS), inductively coupled plasma mass spectrometry (ICP-MS) and X-ray fluorescence spectrometry (XRF) ...

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