Consisting of just two atoms, diatomic molecules include some of our most abundant elements: hydrogen, nitrogen and oxygen. In this book the authors describe how quantum mechanics can be used to predict diatomic molecule spectra in a gaseous state by discussing the calculation of their spectral line intensities. The text emphasises the application of the diatomic spectroscopy predictions in analysis of experimental data and, consequently, several chapters are included on applications in studies of diatomic molecules, including important molecules such as cyanide (CN), aluminium monoxide (AlO), diatomic carbon (C2), titanium monoxide (TiO) and hydroxyl (OH).

Quantum Mechanics of the Diatomic Molecule with Applications summarizes more than 30 years of quantitative analysis of temporally and spatially-resolved experimental records and introduces insights that are essential in utilizing the inherent symmetries associated with diatomic molecules. This is a valuable reference to any academic engaged in the field of spectroscopy and serves as a comprehensive guide to anyone with a genuine interest in the subject.

Christian G Parigger has been an associate professor of physics and astronomy at The University of Tennessee since 1996. His research interests include fundamental and applied spectroscopy, nonlinear optics, quantum optics, ultrafast phenomena, ultrasensitive diagnostics, lasers, combustion and plasma physics, optical diagnostics, biomedical applications and, in general, atomic, molecular and optical (AMO) physics. His work encompasses experimental, theoretical and computational research together with teaching, service and outreach at the Center for Laser Applications (CLA) at The University of Tennessee Space Institute.

James O Hornkohl has made research contributions encompassing spectroscopy of diatomic molecules and its application to the diagnosis of combustion, plasmas, rocket propulsion, and related problems. The extensive collaboration of Hornkohl and Parigger, spanning more than 30 years at the CLA, has been most stimulating and encouraging.