Chemical Species Tomography

The tomographic imaging of chemical species distributions has undergone rapid development in the last 20 years, driven by the combination of key scientific and technological challenges, the emergence of new optoelectronic hardware, and fundamental progress in inverse problems. We describe here the state of the art in Chemical Species Tomography using transmission-based spectroscopic absorption. The treatment ranges from the infrared spectroscopy of target species and associated spectroscopic techniques, through hardware implementation in optical and electronic systems, to image reconstruction methods. In this second edition, we have taken the opportunity to include a greater variety of case studies in order to illustrate central advances in the field, including landmark applications to engineering processes.