Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7674742 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2014 | 26 Pages |
Abstract
We report on efforts to model the Fe emission spectrum generated from laser-induced breakdown spectroscopy (LIBS) measurements on samples of pure iron oxide (Fe2O3). Our modeling efforts consist of several components. We begin with ab-initio atomic structure calculations performed by solving the Hartree-Fock equations for the neutral and singly ionized stages of Fe. Our energy levels are then adjusted to their experimentally known values. The atomic transition probabilities and atomic collision quantities are also computed in an ab-initio manner. We perform LTE or non-LTE calculations that generate level populations and, subsequently, an emission spectrum for the iron plasma for a range of electron temperatures and electron densities. Such calculations are then compared to the experimental spectrum. We regard our work as a preliminary modeling effort that ultimately strives towards the modeling of emission spectra from even more complex samples where less atomic data are available.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
J. Colgan, E.J. Judge, D.P. Kilcrease, J.E. II,