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Collisional Effects on Molecular Spectra : Laboratory Experiments and Models, Consequences for Applications
by Hartmann, Jean-Michel, and Boulet, Christian, and Robert, Daniel
 
Trade paperback
$294.82

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Collisional Effects on Molecular Spectra 2ed (Pb 2021)Collisional Effects on Molecular Spectra 2ed (Pb 2021) (Trade paperback)
Pub. Date: 2021
Publisher: Elsevier
Price: $198.97
Seller: Basi6 International, Irving, TX, USA
Description: New, US edition. Satisfaction guaranteed! !
Collisional Effects on Molecular Spectra 2ed (Pb 2021)Collisional Effects on Molecular Spectra 2ed (Pb 2021) (Trade paperback)
Pub. Date: 2021
Publisher: Elsevier
Price: $221.48
Seller: discount_scientific_books, Sterling Heights, MI, USA
Description: New Book Original US edition, We Ship to PO BOX Address also.
Condition: Brand New
 
 
 
 

More About Collisional Effects on Molecular Spectra by Hartmann, Jean-Michel, and Boulet, Christian, and Robert, Daniel
 
 
 
Overview

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.


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Details
  • PID: 17564438409
  • ISBN-13: 9780128223642
  • Publisher: Elsevier
  • Seller: Ria Christie Books
    Description: C.
    Condition: New.
    Notes: Trade paperback (US). Glued binding. 576 p.