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Author: E. L. Grove
Publisher: Springer Science & Business Media
ISBN: 1468425897
Category : Science
Languages : en
Pages : 358
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Book Description
From the first appearance of the classic The Spectrum Analysis in 1885 to the present the field of emission spectroscopy has been evolving and changing. Over the last 20 to 30 years in particular there has been an explosion of new ideas and developments. Of late, the aura of glamour has supposedly been transferred to other techniques, but, nevertheless, it is estimated that 75% or more of the analyses done by the metal industry are accomplished by emission spectroscopy. Further, the excellent sensitivity of plasma sources has created a demand for this technique in such divergent areas as direct trace element analyses in polluted waters. Developments in the replication process and advances in the art of pro ducing ruled and holographic gratings as well as improvements in the materials from which these gratings are made have made excellent gratings available at reasonable prices. This availability and the development of plane grating mounts have contributed to the increasing popularity of grating spectrometers as com pared with the large prism spectrograph and concave grating mounts. Other areas of progress include new and improved methods for excitation, the use of controlled atmospheres and the extension of spectrometry into the vacuum region, the widespread application of the techniques for analysis of nonmetals in metals, the increasing use of polychrometers with concave or echelle gratings and improved readout systems for better reading of spectrographic plates and more efficient data handling.
Author: E. L. Grove
Publisher: Springer Science & Business Media
ISBN: 1468425897
Category : Science
Languages : en
Pages : 358
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Book Description
From the first appearance of the classic The Spectrum Analysis in 1885 to the present the field of emission spectroscopy has been evolving and changing. Over the last 20 to 30 years in particular there has been an explosion of new ideas and developments. Of late, the aura of glamour has supposedly been transferred to other techniques, but, nevertheless, it is estimated that 75% or more of the analyses done by the metal industry are accomplished by emission spectroscopy. Further, the excellent sensitivity of plasma sources has created a demand for this technique in such divergent areas as direct trace element analyses in polluted waters. Developments in the replication process and advances in the art of pro ducing ruled and holographic gratings as well as improvements in the materials from which these gratings are made have made excellent gratings available at reasonable prices. This availability and the development of plane grating mounts have contributed to the increasing popularity of grating spectrometers as com pared with the large prism spectrograph and concave grating mounts. Other areas of progress include new and improved methods for excitation, the use of controlled atmospheres and the extension of spectrometry into the vacuum region, the widespread application of the techniques for analysis of nonmetals in metals, the increasing use of polychrometers with concave or echelle gratings and improved readout systems for better reading of spectrographic plates and more efficient data handling.
Author: William John Price
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 412
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Book Description
Author:
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 360
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Book Description
Author: Alexander A. Kaufman
Publisher: Gulf Professional Publishing
ISBN: 9780444506429
Category : Acoustic surface waves
Languages : en
Pages : 640
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Book Description
This book is a continuation of 'Acoustic and Elastic Wave Fields in Geophysics, Part I' published in 2000. The second volume is dedicated to propagation of linear plane, spherical and cylindrical acoustic waves in different media. Chapter 1 is devoted to principles of geometric acoustic in plane wave approximation. The eikonal and transport equations are derived. Ray tracing and wavefront construction techniques are explained. Chapter 2 deals with dynamic properties of wave fields. The behavior of pressure and displacements amplitudes in zero approximation is analysed in two ways: using Poynting vector and solving the transport equation. This chapter contains several examples related to shadow zones and caustics. In Chapter 3 using the results of analysis of high-frequency wave kinematics and dynamics some fundamental aspects of Kirchhoff migration are described. Chapters 4 and 5 are devoted to propagation of plane waves in media with flat boundaries in the case of normal and oblique incidence. Special attention is paid to the case when an incident angle exceeds the critical angles. Formation of normal modes in the waveguide is discussed. Chapter 6 deals with a spherical wave reflection and refraction. The steepest descent method is introduced to describe the behavior of reflected, transmitted, head and evanescent waves. In Chapter 7 propagation of stationary and transient waves in a waveguide formed by a flat layer with low velocity are investigated. Normal modes and waves related to the branch points of integrands under consideration are studied. Dispersive properties of normal modes are discussed. Chapter 8 describes wave propagation inside cylinder in acoustic media. Several appendices are added to help the reader understand different aspects of mathematics used in the book.
Author: R. D. Reeves
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 440
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Book Description
Covers the entire sequence of processes necessary in the analysis of geological materials for trace elements. It provides: sampling techniques and physical and chemical methods of sample pretreatment; methods of chemical attack and of separation techniques including ion exchange, solvent extraction, coprecipitation, volatilization, and chromatographic methods; information on elemental abundance data and standard rock materials.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 330
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Book Description
Author: Engineering Societies Library
Publisher:
ISBN:
Category : Classified catalogs (Universal decimal)
Languages : en
Pages : 634
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Book Description
Author:
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages :
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Book Description
Author: Cecil Leeburn Wilson
Publisher: Elsevier Science & Technology
ISBN:
Category : Science
Languages : en
Pages : 402
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Book Description
Author: G. F. Kirkbright
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 846
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Book Description
Spectroscopic theory; Theory of atomic absorption measurements; Theory of atomic fluorescence measurements; Spectral light sources; Flames; Non-flame absorption and fluorescence cells; Introduction of liquid samples into flame atom cells; Wavelength selection; Atomic absorption and fluorescence instrumentation; Practical techniques of atomic absorption and fluorescence spectroscopy; Interferences; Analytical AAS and AFS characteristics of the elements and applications data; Special techniques in AAS and AFS.
