Description 
1 online resource (xii, 292 pages) : illustrations 
Contents 
1. Basic definitions. 1.1. Shape and parameters of a spectral line. 1.2. Principle linebroadening mechanisms and model profiles. 1.3. Broadening, shifting and narrowing coefficients. 1.4. Line interference  2. Semiclassical calculation of pressurebroadened line widths and pressureinduced line shifts. 2.1. Quantum system of two interacting molecules. 2.2. Spectral function. 2.3. General expressions for line halfwidth and shift calculation. 2.4. AndersonTsaoCurnutte theory. 2.5. Interaction potential and irreducible tensors formalism. 2.6. Interruption function for the longrange intermolecular potential. 2.7. Resonance functions in the straightline trajectory approximation. 2.8. Advanced semiclassical methods for linebroadening calculation. 2.9. Parabolic trajectory approximation. 2.10. Resonance functions within the exact trajectory model. 2.11. Approximation for the real parts of exacttrajectory resonance functions. 2.12. Approximation for the imaginary parts of exacttrajectory resonance functions. 2.13. Shortrange forces and trajectory effects. 2.14. Robert and Bonamy formalism with exact trajectories  3. Collisional broadening of water vapour lines. 3.1. Effective operators of physical quantities for X[symbol]Y molecule and vibrotational wave functions for water vapour molecule. 3.2. Selfbroadening of H[symbol]O lines. 3.3. Analytical representation for selfbroadening parameters of water vapour. 3.4. Semiempirical approach to calculation of water vapour line widths and shifts. 3.5. Broadening of water vapour lines by nitrogen, oxygen and carbon dioxide. 3.6. Interference of water vapour spectral lines. 3.7. Broadening of water vapour lines by hydrogen and rare gases. 3.8. Tabulation of H[symbol]O linebroadening coefficients for high temperatures  4. Pressure broadening and shifting of vibrotational lines of atmospheric gases. 4.1. Vibrotational lines of asymmetric X[symbol]Y molecules. 4.2. Vibrotational lines of ethylene. 4.3. Vibrotational lines of symmetric tops. 4.4. Broadening coefficients of vibrotational lines of methane. 4.5. Linear molecules. 4.6. Diatomic molecules 
Summary 
This book presents a comprehensive overview of the modern theory of spectral line broadening and shifting by pressure of atmospheric gases. It describes current semiclassical methods for calculating vibrotational line widths and shifts, including very recent modifications and new developments realised by the authors themselves. For most of the considered molecular systems, analytical formulae are also given, which enable the calculation of line broadening coefficients without the use of semiclassical methods. The results of calculations by various approaches are compared with experimental data available in the literature. Numerous appendices list theoretical expressions and parameters' values required for the writing of computer programs for calculation of line broadening and line shifting coefficients. The book is addressed to undergraduate and postgraduate students as well as to professional scientists and researchers working in the field of molecular physics, molecular spectroscopy, quantum chemistry and mathematical physics 
Bibliography 
Includes bibliographical references and index 
Notes 
Print version record 
Subject 
Spectral line broadening.

Form 
Electronic book

Author 
Lavrentieva, Nina.


Starikov, Vitaly.

ISBN 
1848165978 (electronic bk.) 

9781848165977 (electronic bk.) 
