DOE OSTI · 1998795
Two-Dimensional Thomson Scattering in Laser-Produced Plasmas
Abstract
We present two-dimensional (2D) optical Thomson scattering measurements of electron density and temperature in laser-produced plasmas. The novel instrument directly measures ne(x,y) and Te(x,y) in two dimensions over large spatial regions (cm2) with sub-mm spatial resolution, by automatically translating the scattering volume while the plasma is produced repeatedly by irradiating a solid target with a high-repetition-rate laser beam (10 J, ∼1012 W/cm2, 1 Hz). In this paper, we describe the design and motorized auto-alignment of the instrument and the computerized algorithm that autonomously fits the spectral distribution function to the tens-of-thousands of measured scattering spectra, and captures the transition from the collective to the non-collective regime with distance from the target. As an example, we present the first 2D scattering measurements in laser-driven shock waves in ambient nitrogen gas at a pressure of 0.13 mbar.
Keep this discovery
Explore connections, maps & timelines
Zhang, Haiping (ORCID:0009000228133852), Pilgram, Jessica J. (ORCID:0000000334881881), Constantin, Carmen G. (ORCID:0000000284395518), Rovige, Lucas (ORCID:0000000252675574), Heuer, Peter V. (ORCID:0000000150506606), Ghazaryan, Sofiya (ORCID:0000000289252970), Kaloyan, Marietta (ORCID:0000000182593038), Dorst, Robert S. (ORCID:0000000203561036), Schaeffer, Derek B. (ORCID:0000000316755910), Niemann, Christoph (ORCID:0000000154899144). 2023-09-06. Two-Dimensional Thomson Scattering in Laser-Produced Plasmas. https://doi.org/10.3390/instruments7030025
Cite the original work for its findings. Save a collection to share your selection of sources.