title: Numerical investigation of hyperspectral tomography for simultaneous temperature and concentration imaging.
abstract: We investigate the simultaneous tomographic reconstruction of temperature and species concentration using hyperspectral absorption spectroscopy. Previous work on absorption tomography has relied on a small number of wavelengths, resulting in the requirement of a large number of projections and limited measurement capability. Here we develop a tomographic inversion method to exploit the increased spectral information content enabled by recent advancement in laser technologies. The simulation results clearly demonstrate that the use of hyperspectral absorption data significantly reduces the number of projections, enables simultaneous mapping of temperature and species concentration, and provides more stable reconstruction compared with traditional absorption tomographic techniques.
authors.affiliation: Department of Mechanical Engineering, Clemson University, 102 Fluor Daniel Building, Clemson, South Carolina 29634-0921, USA. linma@clemson.edu
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
authors.forename: Weiwei
authors.initials: W
authors.lastname: Cai