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X Ray And Gamma Ray Spectroscopy Of Solids Under Pressure
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Book Synopsis X-ray and Gamma-ray Spectroscopy of Solids Under Pressure by :
Download or read book X-ray and Gamma-ray Spectroscopy of Solids Under Pressure written by and published by . This book was released on 2000 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes our recent synchrotrons x-ray absorption fine structure (XAFS) measurements on a number of systems that undergo pressure induced changes in local structure at high pressure. The reader should also refer to the accompanying renewal proposal for a more in-depth discussion of the general scope of this program, and its relevance to condensed matter science. We merely state that the methods here are aimed at using XAFS to probe the various phenomena that are caused by high pressure, especially including various structural, and/or electronic, changes or transitions. Our general technique is based upon a pressure cell which utilizes scintered boron carbide anvils, since diamond anvils generally produce Bragg glitches which spoil the high quality XAFS necessary for precision structural measurements. Sample pressure is determined at the beam-line by measuring and analyzing, via XAFS, the compression of some cubic material contained within the sample chamber. Recently we have extended this work to 77 K using helium gas for the applied force, rather than hydraulic oil. This report period has been productive. The increased flux available at the Stanford Synchrotrons Radiation Laboratory (SSRL) has permitted our going to smaller beams, on the order of 300 pm in diameter, for precision probing of the sample region. At the same time we have received ample amounts of beam time at SSRL, in part because of the high rating of our latest user proposal. We also were invited to share some of the beam time at the National Synchrotron Light Source (NSLS) assigned to the group of our collaborator, E.A. Stern. Below we describe in some detail our recent work. Some of the pending papers are reports on systems that have been under study for some time and have been described in past progress reports and, as such, need not be described again here.
Book Synopsis X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Technical Progress Report, November 1996--December 1998 by :
Download or read book X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Technical Progress Report, November 1996--December 1998 written by and published by . This book was released on 1998 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the recent synchrotron x-ray absorption fine structure (XAFS) measurements on a number of systems that undergo pressure induced changes in local structure at high pressure. The reader should also refer to the accompanying renewal proposal for a more in-depth discussion of the general scope of this program, and its relevance to condensed matter science. The author merely states that the methods here are aimed at using XAFS to probe the various phenomena that are caused by high pressure, especially including various structural, and/or electronic, changes or transitions. The general technique is based upon a pressure cell which utilizes sintered boron carbide anvils, since diamond anvils generally produce Bragg glitches which spoil the high quality XAFS necessary for precision structural measurements. Sample pressure is determined at the beam-line by measuring and analyzing, via XAFS, the compression of some cubic material contained within the sample chamber. Recently, the author has extended this work to 77 K using helium gas for the applied force, rather than hydraulic oil.
Book Synopsis X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, November 1996--October 1997 by :
Download or read book X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, November 1996--October 1997 written by and published by . This book was released on 1997 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes our recent synchrotron x-ray absorption fine structure (XAFS) measurements on a number of systems that undergo pressure induced changes in local structure at high pressure. Our general technique is based upon a pressure cell which utilizes scintered boron carbide anvils, since diamond anvils generally produce Bragg glitches which spoil the high quality EXAFS necessary for precision structural measurements. Sample pressure is determined at the beam-line by measuring and analyzing, via XAFS, the compression of some cubic material contained within the sample chamber. Recently we have extended this work to 77 K using helium gas for the applied force, rather than hydraulic oil.
Book Synopsis X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure by :
Download or read book X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure written by and published by . This book was released on 1996 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report briefly describes the studies of various materials at high pressures, in the last three years, by means of x-ray and [gamma]-ray absorption spectroscopy. High pressure provides a very effective means of studying materials. Virtually every property is altered, from the color and crystal structure, to the electrical and magnetic properties. The fundamental reason, of course, is that the quantum levels depend upon the atomic spacing, so that both the electronic and vibrational structure are affected.
Book Synopsis X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, November 1993--October 1994 by :
Download or read book X-ray and [Gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, November 1993--October 1994 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During this period, synchrotron beam time (approx. 2 weeks/year) was obtained from the Stanford Synchrotron Radiation Laboratory. The following areas of study are reported: XAFS studies of polyhedral solids (ReO[sub 3], perovskites, rubidium tungsten bronze), Moessbauer study of sodium nitroprusside, XAFS studies of phase transition mechanisms (effects of high pressure on metallic Fe), and multiple scattering analysis of XANES.
Book Synopsis X-ray and [gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1991--October 1992 by :
Download or read book X-ray and [gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1991--October 1992 written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effort is divided into the following: high pressure transitions (Fe, RbCl), XAFS studies of perovskites under pressure (ReO3, high-{Tc} superconductors), studies of XANES of alkali halides, and Moessbauer studies (iron silicate spinel).
Book Synopsis X-ray and [gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1990--October 1993 by :
Download or read book X-ray and [gamma]-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1990--October 1993 written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following studies are described that were either completed during this 3-year period or are well underway: XAFS study of pressure-induced transition in Rb-W bronze (Rb{sub 0.31}WO3); XAFS study of bcc-hcp transition in Fe; XAFS search for valence change in thallium perhenate (TlReO4) at high pressure; XANES analysis of alkali halides; pair potentials in alkali halides studied via EXAFS; EXAFS determination of bond angles in ReO3; XAFS study of mixed-valence transition in SmSe; Moessbauer studies of Fe hydride at high pressure; and Moessbauer and x-ray studies of Fe silicate spinel at high pressure. (DLC).
Book Synopsis X-ray and Γ-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1990--October 1993 by :
Download or read book X-ray and Γ-ray Spectroscopy of Solids Under Pressure. Annual Technical Progress Report, October 1990--October 1993 written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following studies are described that were either completed during this 3-year period or are well underway: XAFS study of pressure-induced transition in Rb-W bronze (Rb{sub 0.31}WO3); XAFS study of bcc-hcp transition in Fe; XAFS search for valence change in thallium perhenate (TlReO4) at high pressure; XANES analysis of alkali halides; pair potentials in alkali halides studied via EXAFS; EXAFS determination of bond angles in ReO3; XAFS study of mixed-valence transition in SmSe; Moessbauer studies of Fe hydride at high pressure; and Moessbauer and x-ray studies of Fe silicate spinel at high pressure. (DLC).
Book Synopsis X-ray and Tau-ray Spectroscopy of Solids Under Pressure: Annual Technical Progress Report, November 1993 - October 1994 by :
Download or read book X-ray and Tau-ray Spectroscopy of Solids Under Pressure: Annual Technical Progress Report, November 1993 - October 1994 written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grants and Awards for the Fiscal Year Ended ... by : National Science Foundation (U.S.)
Download or read book Grants and Awards for the Fiscal Year Ended ... written by National Science Foundation (U.S.) and published by . This book was released on 1981 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Remote Compositional Analysis by : Janice L. Bishop
Download or read book Remote Compositional Analysis written by Janice L. Bishop and published by Cambridge University Press. This book was released on 2019-11-28 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive overview of the spectroscopic, mineralogical, and geochemical techniques used in planetary remote sensing.
Book Synopsis High Pressure Chemistry by : H. Kelm
Download or read book High Pressure Chemistry written by H. Kelm and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the field of high pressure techniques influenced me to propose an Advanced Study Institute in Hi0h Pressure Chemistry. It was intended that the summer school should devote itself exclusively to the description and discussion of the effects of pressure in chemistry. Besides typical effects on matter, the application of high pressure techniques to existing research methods were to be treated, as well as pressure effects on reaction rates and equilibria. According to the concept of the Advanced Study Institute Program, the Summer School proceedings were meant to be a high level teaching activity. It was emphasized that the contributions should have the character of surveys rather than of highly specialized reports on recent research results. NOw, following the successful completion of the summer school, which involved very close cooperation with my colleagues during its preparation, it is my sincere wish to thank all the lecturers and contributors to this volume for the extreme care they used in preparing the lectures and manuscripts. I am especially grateful to the members of the organizing committee for their valuable assistance. Finally, the financial support of the Scientific Affairs Division of the North Atlantic Treaty Organization is equally appreciated by participants and organizers of the Advanced Study Institute.
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1985 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Core Level Spectroscopy of Solids by : Frank de Groot
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
Book Synopsis Applied Gamma-Ray Spectrometry by : C. E. Crouthamel
Download or read book Applied Gamma-Ray Spectrometry written by C. E. Crouthamel and published by Elsevier. This book was released on 2013-10-22 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied Gamma-Ray Spectrometry covers real life application of the gamma-ray and the devices used in their experimental studies. This book is organized into 9 chapters, and starts with discussions of the various decay processes, the possible interaction mechanisms of gamma radiation with matter, and the intrinsic and extrinsic variables, which affect the observed gamma-ray and X-ray spectra. The subsequent chapters deal with the properties and fabrication of scintillation detectors, semiconductor detectors, and proportional gas counters. These chapters present some of the most widely utilized applications of these detectors, with a particular emphasis to the activation analysis. These topics are followed by reviews of the description of basic equipment, such as amplifiers, analyzers, special spectrometer arrangements, and detector shielding. Other chapters describe energy and time resolution and quantitative calibration. The quantitative and qualitative interpretation of the spectra is also explained, along with the calibration of the detectors. The last chapter considers the analytical applications of gamma-ray and X-ray spectrometry in tracer studies, activation analysis, fission product studies, and X-ray fluorescence analysis. This book will be of value to analytical chemists and analytical chemistry researchers.
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