Download or read book Detection Limits for Actinides in a Monochromatic Wavelength dispersive X ray Fluorescence Instrument written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in x-ray optics have made it possible to examine the L x-rays of actinides using doubly-curved crystals in a bench-top device. A doubly-curved crystal (DCC) acts as a focusing monochromatic filter for polychromatic x-rays. A Monochromatic, Wavelength-Dispersive X-Ray Fluorescence (MWDXRF) instrument that uses DCCs to measure Cm and Pu in reprocessing plant liquors was proposed in 2007 by the authors at Los Alamos National Laboratory. A prototype design of this MWDXRF instrument was developed in collaboration with X-ray Optical Systems Inc. (XOS), of East Greenbush, New York. In the MWDXRF instrument, x-rays from a Rhodium-anode x-ray tube are passed through a primary DCC to produce a monochromatic beam of 20.2-keV photons. This beam is focused on a specimen that may contain actinides. The 20.2-keV interrogating beam is just above the L3 edge of Californium; each actinide (with Z = 90 to 98) present in the specimen emits characteristic L x-rays as the result of L3-shell vacancies. In the LANL-XOS prototype MWDXRf, these x-rays enter a secondary DCC optic that preferentially passes 14.961-keV photons, corresponding to the L-alpha-1 x-ray peak of Curium. In the present stage of experimentation, Curium-bearing specimens have not been analyzed with the prototype MWDXRF instrument. Surrogate materials for Curium include Rubidium, which has a K-beta-l x-ray at 14.961 keV, and Yttrium, which has a K-alpha-1 x-ray at 14.958 keV. In this paper, the lower limit of detection for Curium in the LANL-XOS prototype MWDXRF instrument is estimated. The basis for this estimate is described, including a description of computational models and benchmarking techniques used. Detection limits for other actinides are considered, as well as future safeguards applications for MWDXRF instrumentation.
Download or read book JJG 810 1993 Translated English of Chinese Standard JJG 810 1993 JJG810 1993 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-09-24 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Verification Regulation is applicable to the calibration of all types of wavelength dispersive X-ray fluorescence spectrometers that are newly manufactured, in use, or after repair.
Download or read book Standard Test Method for Chlorine in Aromatics by Monochromatic Wavelength Dispersive X ray Fluorescence Spectrometry written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handheld XRF in Cultural Heritage written by and published by . This book was released on 2020 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Geomicrobiology written by Janice P. L. Kenney and published by Cambridge University Press. This book was released on 2019-07-18 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive handbook outlining state-of-the-art analytical techniques used in geomicrobiology, for advanced students, researchers and professional scientists.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982-02 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synchrotron Radiation Research written by Herman Winick and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has grown out of our shared experience in the development of the Stanford Synchrotron Radiation Laboratory (SSRL), based on the electron-positron storage ring SPEAR at the Stanford Linear Accelerator Center (SLAC) starting in Summer, 1973. The immense potential of the photon beam from SPEAR became obvious as soon as experiments using the beam started to run in May, 1974. The rapid growth of interest in using the beam since that time and the growth of other facilities using high-energy storage rings (see Chapters 1 and 3) demonstrates how the users of this source of radiation are finding applications in an increasingly wide variety of fields of science and technology. In assembling the list of authors for this book, we have tried to cover as many of the applications of synchrotron radiation, both realized already or in the process of realization, as we can. Inevitably, there are omissions both through lack of space and because many projects are at an early stage. We thank the authors for their efforts and cooperation in producing what we believe is the most comprehensive treatment of synchrotron radiation research to date.
Download or read book Radioactive Particles in the Environment written by International Atomic Energy Agency and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports on the outcome of an IAEA coordinated research project in the area of measurement and characterization of radioactive particles in the environment. This publication summarizes the achievements and findings of the project participants and gives guidance for application of the techniques for evaluation of contaminated areas.
Download or read book Analytical Chemistry in Archaeology written by A. M. Pollard and published by Cambridge University Press. This book was released on 2007-01-18 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual introduces the basic concepts of chemistry behind scientific analytical techniques and reviews their application to archaeology. It is an essential tool for students of archaeology that explains key terminology and outlines the procedures to be followed in order to produce good data.
Download or read book X Ray Absorption and X Ray Emission Spectroscopy 2 Volume Set written by Jeroen A. van Bokhoven and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-Ray Absorption and X-ray Emission Spectroscopy: Theory and Applications During the last two decades, remarkable and often spectacular progress has been made in the methodological and instrumental aspects of x-ray absorption and emission spectroscopy. This progress includes considerable technological improvements in the design and production of detectors especially with the development and expansion of large-scale synchrotron reactors All this has resulted in improved analytical performance and new applications, as well as in the perspective of a dramatic enhancement in the potential of x-ray based analysis techniques for the near future. This comprehensive two-volume treatise features articles that explain the phenomena and describe examples of X-ray absorption and emission applications in several fields, including chemistry, biochemistry, catalysis, amorphous and liquid systems, synchrotron radiation, and surface phenomena. Contributors explain the underlying theory, how to set up X-ray absorption experiments, and how to analyze the details of the resulting spectra. X-Ray Absorption and X-ray Emission Spectroscopy: Theory and Applications: Combines the theory, instrumentation and applications of x-ray absorption and emission spectroscopies which offer unique diagnostics to study almost any object in the Universe. Is the go-to reference book in the subject for all researchers across multi-disciplines since intense beams from modern sources have revolutionized x-ray science in recent years Is relevant to students, postdocurates and researchers working on x-rays and related synchrotron sources and applications in materials, physics, medicine, environment/geology, and biomedical materials
Download or read book A Consumer s Guide to Archaeological Science written by Mary E. Malainey and published by Springer Science & Business Media. This book was released on 2010-09-28 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many archaeologists, as primarily social scientists, do not have a background in the natural sciences. This can pose a problem because they need to obtain chemical and physical analyses on samples to perform their research. This manual is an essential source of information for those students without a background in science, but also a comprehensive overview that those with some understanding of archaeological science will find useful. The manual provides readers with the knowledge to use archaeological science methods to the best advantage. It describes and explains the analytical techniques in a manner that the average archaeologist can understand, and outlines clearly the requirements, benefits, and limitations of each possible method of analysis, so that the researcher can make informed choices. The work includes specific information about a variety of dating techniques, provenance studies, isotope analysis as well as the analysis of organic (lipid and protein) residues and ancient DNA. Case studies illustrating applications of these approaches to most types of archaeological materials are presented and the instruments used to perform the analyses are described. Available destructive and non-destructive approaches are presented to help archaeologists select the most effective technique for gaining the target information from the sample. Readers will reach for this manual whenever they need to decide how to best analyze a sample, and how the analysis is performed.
Download or read book Quantitative X Ray Fluorescence Analysis written by Gerald R. Lachance and published by . This book was released on 1995-01-31 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic account concerning the basic theory of X-ray physics and spectrometer configurations leading to simple expressions quantifying primary and secondary fluorescence emissions. Discusses the fundamental parameters approach for converting intensities to concentrations in both its classical formalism and by a number of basic influence coefficient algorithms. Examines approximations underlying influence coefficient models and theoretical simulations are used to evaluate global methods. Includes numerous detailed examples as well as extensive tabulations of theoretical data.
Download or read book Core Level Spectroscopy of Solids written by Frank de Groot and published by CRC Press. This book was released on 2008-03-10 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Core level spectroscopy has become a powerful tool in the study of electronic states in solids. From fundamental aspects to the most recent developments, Core Level Spectroscopy of Solids presents the theoretical calculations, experimental data, and underlying physics of x-ray photoemission spectroscopy (XPS), x-ray absorption spectroscopy (XAS), x
Download or read book Handbook of Practical X Ray Fluorescence Analysis written by Burkhard Beckhoff and published by Springer Science & Business Media. This book was released on 2007-05-18 with total page 897 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-Ray fluorescence analysis is an established technique for non-destructive elemental materials analysis. This book gives a user-oriented practical guidance to the application of this method. The book gives a survey of the theoretical fundamentals, analytical instrumentation, software for data processing, various excitation regimes including gracing incidents and microfocus measurements, quantitative analysis, applications in routine and micro analysis, mineralogy, biology, medicine, criminal investigations, archeology, metallurgy, abrasion, microelectronics, environmental air and water analysis. This book is the bible of X-Ray fluorescence analysis. It gives the basic knowledge on this technique, information on analytical equipment and guides the reader to the various applications. It appeals to researchers, analytically active engineers and advanced students.
Download or read book Encyclopedia of Materials Characterization written by Charles A. Evans and published by Gulf Professional Publishing. This book was released on 1992 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a comprehensive volume on analytical techniques used in materials science for the characterization of surfaces, interfaces and thin films. This flagship volume is a unique, stand-alone reference for materials science practitioners, process engineers, students and anyone with a need to know about the capabilities available in materials analysis. An encyclopedia of 50 concise articles, this book will also be a practical companion to the forthcoming books in the series."--Knovel.
Download or read book Magnetism and Synchrotron Radiation written by Eric Beaurepaire and published by Springer Science & Business Media. This book was released on 2010-03-12 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in the synthesis of new materials with often complex, nano-scaled structures require increasingly sophisticated experimental techniques that can probe the electronic states, the atomic magnetic moments and the magnetic microstructures responsible for the properties of these materials. At the same time, progress in synchrotron radiation techniques has ensured that these light sources remain a key tool of investigation, e.g. synchrotron radiation sources of the third generation are able to support magnetic imaging on a sub-micrometer scale. With the Fifth Mittelwihr School on Magnetism and Synchrotron Radiation the tradition of teaching the state-of-the-art on modern research developments continues and is expressed through the present set of extensive lectures provided in this volume. While primarily aimed at postgraduate students and newcomers to the field, this volume will also benefit researchers and lecturers actively working in the field.
Download or read book Solution of the Phase Problem I The Centrosystemmetric Crystal written by Herbert Aaron Hauptman and published by . This book was released on 1953 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
