نتایج جستجو برای: x ray fluorescence

تعداد نتایج: 760998  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Hideshi Ishii Jun Kawai

X-ray absorption spectral (XAS) analysis is performed with a combination of a 9 V dry electric battery X-ray generator and a portable Si PIN X-ray detector. The calcium K edge (4.0 keV) in paper is measured with a grazing incidence geometry, which suppressed the artifact due to the Kalpha X-ray fluorescence peak at 3.5 keV. The 9 V dry battery X-ray emitter is useful for portable XAS measurements.

2005
Zhenlin Luo Bin Geng Jun Bao Cihui Liu Wenhan Liu Chen Gao Zhiguo Liu Xunliang Ding

We have developed a high-throughput x-ray characterization system, which can rapidly screen structure, composition and x-ray scintillation of combinatorial materials libraries using energy-dispersive x-ray diffraction, x-ray fluorescence, and x-ray photoluminescence. This system consists of an x-ray source, a polycapillary x-ray lens, one or two x-ray energy detectors, and a fiber optic spectro...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Hiroaki Murakami Ryoichi Ono Atsuhiko Hirai Yoshinori Hosokawa Jun Kawai

A compact X-ray emission instrument is made, and the X-ray spectra are measured by changing the applied electric potential. Strong soft X-rays are observed when evacuating roughly and applying a high voltage to an insulator settled in this device. The X-ray intensity is higher as the applied voltage is increased. A light-emitting phenomenon is observed when this device emits X-rays. The present...

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...

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 (...

2015
Qiaoling Jin Stefan Vogt Barry Lai Si Chen Lydia Finney Sophie-Charlotte Gleber Jesse Ward Junjing Deng Rachel Mak Nena Moonier Chris Jacobsen

Rapidly-frozen hydrated (cryopreserved) specimens combined with cryo-scanning x-ray fluorescence microscopy provide an ideal approach for investigating elemental distributions in biological cells and tissues. However, because cryopreservation does not deactivate potentially infectious agents associated with Risk Group 2 biological materials, one must be concerned with contamination of expensive...

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