April 11, 2023
Journal Article
Comparison of excitation and kinetic temperatures in a laser-produced plasma using absorption spectroscopy
Abstract
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.Published: April 11, 2023