Studies of spectral line merging in a laser-induced hydrogen plasma diagnosed with two-color Thomson scattering.
basic_science · Level V
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- Record sourced from PubMed, PMID 34271701.
- Also identified by DOI 10.1103/PhysRevE.103.063207.
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Abstract
Laser-induced hydrogen plasma in the density and temperature range of (0.1-5)×10^{23}m^{-3} and (6000-20000)K, respectively, was precisely diagnosed using two-color Thomson scattering technique, inferring the electron number density, electron temperature as well as ion temperature. Simultaneously, spectra of the Balmer series of spectral lines from H-β to H-ζ were measured and plasma emission coefficient calculated within the quasicontiguous frequency-fluctuation model. The theoretical spectra are found to be in good agreement with experimental ones, including higher-density data where discrete lines were observed to merge forming a continuum.