نتایج جستجو برای: dispersive spectrometer

تعداد نتایج: 38910  

Journal: :IEICE Transactions 2009
Keiichi Tanaka Akikazu Odawara Atsushi Nagata Yukari Baba Satoshi Nakayama Shigenori Aida Toshimitsu Morooka Yoshikazu Homma Izumi Nakai Kazuo Chinone

The Transition Edge Sensor (TES)-Energy Dispersive Spectrometer (EDS) is an X-ray detector with high-energy resolution (12.8 eV). The TES can be mounted to a scanning electron microscope (SEM). The TES-EDS is based on a cryogen-free dilution refrigerator. The high-energy resolution enables analysis of the distribution of various elements in samples under low acceleration voltage (typically unde...

2005
Chieu D. Tran

An infrared (IR) multispectral imaging spectrometer is an instrument that can simultaneously record infrared spectroscopic and spatial information of a sample. Chemical and physical properties of the sample can be elucidated from such images. In a multispectral imaging instrument, a camera is used to record the spatial distribution of the sample, and the spectral information is obtained with a ...

2015

Peats are geotechnically problematic soil due to their high compressibility and low shear strength. Cement is widely used for the stabilization of peat by deep mixing method (DMM). This paper presents the results of the model study of compressibility property of peats stabilized with cement columns formed by DMM. The results of consolidation test, scanning electron micrographs (SEM) and energy ...

2018
Fang Li Jihua Wang Li Xu Songxue Wang Minghui Zhou Jingwei Yin Anxiang Lu

The accuracy, repeatability and detection limits of the energy-dispersive X-ray fluorescence (XRF) spectrometer used in this study were tested to verify its suitability for rapid screening of cadmium in samples. Concentrations of cadmium in rice grain samples were tested by the XRF spectrometer. The results showed that the apparatus had good precision around the national limit value (0.2 mg/kg)...

2011
A. Drouart A. M. Amthor D. Boutin F. Déchery J. A. Nolen

The Super Separator Spectrometer S is a device designed for experiments with the very high intensity stable ion beam of the superconducting linear accelerator of the SPIRAL2 facility. Its Physics goals cover the study of radioactive ions produced by fusion-evaporation reactions, like superheavy elements or neutron deficient nuclei close to the proton drip line, but also neutron rich nuclei prod...

Journal: :Journal of forensic sciences 2010
Grzegorz Zadora Tereza Neocleous Colin Aitken

Likelihood ratios (LRs) provide a natural way of computing the value of evidence under competing propositions. We propose LR models for classification and comparison that extend the ideas of Aitken, Zadora, and Lucy and Aitken and Lucy to include consideration of zeros. Instead of substituting zeros by a small value, we view the presence of zeros as informative and model it using Bernoulli dist...

2004
D. P. Siddons Z. Zhong

This proposal aims to continue the preliminary experiments using SPPS, which demonstrated the feasibility of preforming XANES experiments on the femtosecond time scale. It also has the potential to provide a shot-by-shot measurement of the beam spectral profile. The instrument consists of a simple dispersive spectrometer coupled to an integrating position-sensitive detector. Experiments at NSLS...

Journal: :Analytical chemistry 2002
John Thomas Bradshaw Sergio B Mendes S Scott Saavedra

A new generation waveguide spectrometer with broadband coupling capabilities has been developed. As opposed to previous devices, this attenuated total reflection (ATR) spectrometer is much simpler in design, is more chemically robust, and transmits light down to at least 400 nm. The attenuated total reflection element consists of a single-mode, planar integrated optical waveguide fabricated by ...

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