Collisional Effects on Molecular Spectra

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  • Author : Jean-Michel Hartmann
  • Publisher : Elsevier
  • Pages : 432 pages
  • ISBN : 9780080569949
  • Rating : 5/5 from 1 reviews
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Download or Read online Collisional Effects on Molecular Spectra full in PDF, ePub and kindle. this book written by Jean-Michel Hartmann and published by Elsevier which was released on 12 August 2008 with total page 432 pages. We cannot guarantee that Collisional Effects on Molecular Spectra book is available in the library, click Get Book button and read full online book in your kindle, tablet, IPAD, PC or mobile whenever and wherever You Like. Gas phase molecular spectroscopy is a powerful tool for obtaining information on the geometry and internal structure of isolated molecules as well as on the interactions that they undergo. It enables the study of fundamental parameters and processes and is also used for the sounding of gas media through optical techniques. It has been facing always renewed challenges, due to the considerable improvement of experimental techniques and the increasing demand for accuracy and scope of remote sensing applications. In practice, the radiating molecule is usually not isolated but diluted in a mixture at significant total pressure. The collisions among the molecules composing the gas can have a large influence on the spectral shape, affecting all wavelength regions through various mechanisms. These must be taken into account for the correct analysis and prediction of the resulting spectra. This book reviews our current experimental and theoretical knowledge and the practical consequences of collisional effects on molecular spectral shapes in neutral gases. General expressions are first given. They are formal of difficult use for practical calculations often but enable discussion of the approximations leading to simplified situations. The first case examined is that of isolated transitions, with the usual pressure broadening and shifting but also refined effects due to speed dependence and collision-induced velocity changes. Collisional line-mixing, which invalidates the notion of isolated transitions and has spectral consequences when lines are closely spaced, is then discussed within the impact approximation. Regions where the contributions of many distant lines overlap, such as troughs between transitions and band wings, are considered next. For a description of these far wings the finite duration of collisions and concomitant breakdown of the impact approximation must be taken into account. Finally, for long paths or elevated pressures, the dipole or polarizability induced by intermolecular interactions can make significant contributions. Specific models for the description of these collision induced absorption and light scattering processes are presented. The above mentioned topics are reviewed and discussed from a threefold point of view: the various models, the available data, and the consequences for applications including heat transfer, remote sensing and optical sounding. The extensive bibliography and discussion of some remaining problems complete the text. State-of-the-art on the subject A bibliography of nearly 1,000 references Tools for practical calculations Consequences for other scientific fields Numerous illustrative examples Fulfilling a need since there is no equivalent monograph on the subject

Collisional Effects on Molecular Spectra

Collisional Effects on Molecular Spectra
  • Author : Jean-Michel Hartmann,Christian Boulet,Daniel Robert
  • Publisher : Elsevier
  • Release : 12 August 2008
GET THIS BOOK Collisional Effects on Molecular Spectra

Gas phase molecular spectroscopy is a powerful tool for obtaining information on the geometry and internal structure of isolated molecules as well as on the interactions that they undergo. It enables the study of fundamental parameters and processes and is also used for the sounding of gas media through optical techniques. It has been facing always renewed challenges, due to the considerable improvement of experimental techniques and the increasing demand for accuracy and scope of remote sensing applications. In practice,

Recent Advances in Collisional Effects on Spectra of Molecular Gases and Their Practical Consequences

Recent Advances in Collisional Effects on Spectra of Molecular Gases and Their Practical Consequences
  • Author : Anonim
  • Publisher : Unknown
  • Release : 06 May 2021
GET THIS BOOK Recent Advances in Collisional Effects on Spectra of Molecular Gases and Their Practical Consequences

Highlights: A review on the progress made in the last decade on pressure effects on absorption shapes. High accuracy measurement techniques. Theories, models and available data for the absorption shapes. Consequences for remote sensing, metrology and heat transfer applications. Over 700 references. Abstract: We review progress, since publication of the book `` Collisional effects on molecular spectra: Laboratory experiments and models, consequences for applications" (Elsevier, Amsterdam, 2008), on measuring, modeling and predicting the influence of pressure ( ie of intermolecular collisions) on the spectra

Atomic and Molecular Spectroscopy

Atomic and Molecular Spectroscopy
  • Author : Sune Svanberg
  • Publisher : Springer Science & Business Media
  • Release : 04 December 2003
GET THIS BOOK Atomic and Molecular Spectroscopy

A wide-ranging review of modern spectroscopic techniques such as X-ray, photoelectron, optical and laser spectroscopy, and radiofrequency and microwave techniques. On the fundamental side the book focuses on physical principles and the impact of spectroscopy on our understanding of the building blocks of matter, while in the area of applications particular attention is given to those in chemical analysis, photochemistry, surface characterisation, environmental and medical diagnostics, remote sensing and astrophyscis. The Fourth Edition also provides the reader with an update

Ultrasensitive Laser Spectroscopy

Ultrasensitive Laser Spectroscopy
  • Author : David S. Kliger
  • Publisher : Unknown
  • Release : 06 May 1983
GET THIS BOOK Ultrasensitive Laser Spectroscopy

Ultrasensitive Laser Spectroscopy covers the experimental methods involved in various sensitive techniques to which lasers have been applied for the study of weak transitions. This book is organized into seven chapters. Each chapter discusses the theories, experiments, and application of the specific technique. A discussion on the advantages, disadvantages, and modifications made in each technique is also provided. Ultrasensitive techniques considered in this text include photoacoustic, one- and two-photon excitation, absorption, mass, and laser ionization spectroscopies. Other chapters exami ...

Molecular Spectroscopy

Molecular Spectroscopy
  • Author : Jeanne L. McHale
  • Publisher : Pearson College Division
  • Release : 06 May 1999
GET THIS BOOK Molecular Spectroscopy

This rigorous and engaging book presents the basic theories underlying spectroscopy while incorporating modern viewpoints of practical utility in spectroscopy research. Written in a clear, jargon-free style, it covers the quantum mechanical theoretical basis of spectroscopy, modern innovations in spectroscopy theory, such as time-dependent theory, and practical applications of spectroscopy research, including the influence of condensed phases. Begins with a brief review of quantum mechanical principles, then moves on to such areas as the properties of light, bulk electric and