2023 journal article
Comparison of excitation and kinetic temperatures in a laser-produced plasma using absorption spectroscopy
OPTICS LETTERS, 48(7), 1942–1945.
High-resolution tunable laser absorption spectroscopy is used to measure time-resolved absorption spectra for six neutral uranium transitions in a laser-produced plasma. Analysis of the spectra shows that kinetic temperatures are similar for all six transitions, but excitation temperatures are higher than kinetic temperatures from 10–100 μs, indicating departures from local thermodynamic equilibrium.