نتایج جستجو برای: xrf method
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AMPTEK INC. 14 DeAngelo Drive, Bedford, MA 01730-2204 U.S.A. APPLICATIONS • X-Ray Fluorescence • Thin-film Analysis • RoHS/WEEE Analysis • Teaching and Research • Art and Archaeology • Process Control • X-ray Tube Characterization FEATURES • Fundamental parameters (FP) • Analysis with or without standards • General bulk and thin-film analysis • Analyze up to 40 elements • Supports all Amptek de...
شهر صنعتی البرز با قدمتی بیش از پنجاه سال، متشکل از منطقه مسکونی و صنعتی، واقع در 10 کیلومتری شهر قزوین است و تصفیه خانه آن از سال 1378 با ظرفیت 000,70 متر مکعب در روز بر اساس روش سیستم لجن فعال طراحی و راه اندازی گردید. در حال حاضر، پساب تولیدی حدود پانصد کارخانه بزرگ و کوچک توسط شبکۀ جمع آوری فاضلاب جهت تصفیه به این واحد وارد می شود. بزرگترین مشکل تصفیه خانه فوق از زمان راه اندازی، انباشت لجن...
in this work x-ray fluorescence (xrf) technique was used to evaluate the soil pollution withheavy metals for twenty four surface soil samples (0–10 cm in depth) from various locations to cover theindustrial area in omdurman city, sudan. concentrations of 10 elements cr, ni, cu, zn, zr, pb, rb, co, cd andas were determined. it was found that cr, cu and cd concentrations for almost all studied si...
Chemical analyses conducted on the surface of rock slabs under a combination of two X-ray spectrometry methods, wavelength dispersive XRF and energy dispersive XRF, are used to establish a geochemical correlation between the studied samples. This proves to be an excellent method for the characterization of volcanic glasses, particularly when particles of exotic origin are present, because the e...
A pair of elliptical mirrors (KB mirror) was designed and fabricated to realize an energy tunable x-ray microbeam for spectromicroscopy at SPring-8 BL39XU. As is commonly recognized, the obtainable beam size with the aspherical total reflection mirrors is strongly affected with the slope error of the mirror. Considering that the extremely high brilliance of the undulator radiation from the SPri...
This work describes a tabletop (50 cm × 25 cm × 25 cm) full field X-ray pinhole camera (FF-XPC) presenting high energy- and high spatial-resolution. The FF-XPC consists of a conventional charge-coupled device (CCD) detector coupled, in a coaxial geometry, to a pinhole collimator of small diameter. The X-ray fluorescence (XRF) is induced on the samples with an external low-power X-ray tube. The ...
We present Swift-UVOT data on the optical afterglow of the X-ray flash of 2005 April 6 (XRF 050406) from 88 s to ∼ 10 5 s after the initial prompt γ-ray emission. Our observations in the V, B and U bands are the earliest that have been taken of an XRF optical counterpart. Combining the early-time optical temporal and spectral properties with γ-and simultaneous X-ray data taken with the BAT and ...
Grazing Incidence X-Ray Fluorescence (GI-XRF) technique is a powerful tool for the characterization of depth profile concentrations in multilayered samples. A modeling program called ANDEN has been developed for simulating GI-XRF data for layered thin films [1]. ANDEN was used as one of the tools to study the dependence of dopants distribution with magnetic behavior in Diluted Magnetic Semicond...
Introduction Archaeochemists are called on to analyze a wide variety of samples, ranging from metals, pigments, and glasses to bones, stones, and soils. In most cases these samples are solids. Although non-destructive and/or micro-sample analyses are preferable for these cultural resources, in many cases there is a large amount of material available for analysis. In those instances where non-de...
There is mounting evidence that long duration gamma ray bursts (GRBs) and X-ray flashes (XRFs) are produced by highly relativistic and narrowly collimated jets ejected in core collapse supernova (SN) explosions akin to SN 1998bw. We review the history of the GRB-SN association idea and its observational verification. We summarize the present evidence for a GRB/XRF-SN association. We comment on ...
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