The spectra and dynamics of diatomic molecules - Lefebvre-Brion, Hélène (Elsevier Academic Press, 2004)
"'The spectra and dynamics of diatomic molecules' is a revised and enlarged edition of the 1986 title 'Perturbations in the spectra of diatomic molecules.'"
Includes bibliographical references and index
Simple spectra and standard experimental techniques -- Basic models -- Terms neglected in the Born-Oppenheimer approximation -- Methods of deperturbation -- Interpretation of the perturbation matrix elements -- Transition intensities and special effects -- Photodissociation dynamics -- Photoionization dynamics -- Dynamics
This book is written for graduate students just beginning research, for theorists curious about what experimentalists actually can and do measure, and for experimentalists bewildered by theory. It is a guide for potential users of spectroscopic data, and uses language and concepts that bridge the frequency-and time-domain spectroscopic communities.
Key topics, concepts, and techniques include: the assignment of simple spectra, basic experimental techniques, definition of Born-Oppenheimer and angular momentum basis sets and the associated spectroscopic energy level patterns (Hund's cases), construction of effective Hamiltonian matrices to represent both spectra and dynamics, terms neglected in the Born-Oppenheimer approximation (situations intermediate between Hund's cases, spectroscopic perturbations), nonlinear least squares fitting, calculation and interpretation of coupling terms, semi-classical (WKB) approximation, transition intensities and interference effects, direct photofragmentation (dissociation and ionization) and indirect photofragmentation (predissociation and autoionization) processes, visualization of intramolecular dynamics, quantum beats and wavepackets, treatment of decaying quasi-eigenstates using a complex Heff model, and concluding with some examples of polyatomic molecule dynamics.