On the use of laser-induced fluorescence to probe the thermodynamic equilibrium in laser-generated plasmas

Chemin, Arsène; Ross, Amanda; Hermelin, Sylvain; Crozet, P.; Motto-Ros, Vincent; Ledoux, Gilles; Dujardin, Christophe; Amans, David

doi:10.1016/j.sab.2023.106685

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Instrumentation Fundamentals and Chemometrics1

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2024

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“…Chemin et al 80 investigated LTE in a LIBS plasma ablated from an alumina target. They used LIF to probe the population of the rotational levels in the ground electronic state X 2 Σ + of AlO, 5 μs and 30 μs after ablation.…”

Section: Instrumentation Fundamentals and Chemometricsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans,

Pisonero,

Smith

et al. 2024

J. Anal. At. Spectrom.

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Section: Instrumentation Fundamentals and Chemometricsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans,

Pisonero,

Smith

et al. 2024

J. Anal. At. Spectrom.

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Comparison of excitation temperature of a laser-produced plasma by combining emission and absorption spectroscopy

Polek,

Phillips,

Beg

et al. 2024

AIP Advances

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Measurement of the temporal evolution of laser-produced plasma temperature is very important for many of its applications, and several plasma diagnostic tools are routinely used by researchers. However, it is very challenging to measure the properties of the plasma at the early and late times of its evolution using a single diagnostic tool. In this study, we combined emission and laser absorption spectroscopy to compare the excitation temperatures of a laser-produced uranium plasma system. Several U I transitions in the near-infrared spectral range (775–800 nm) were considered, and the Boltzmann plot method was used to measure the excitation temperatures using both emission and absorption spectroscopy. Emission spectroscopy provided early-time temperature measurements of the plasma up to times 2–20 µs, while absorption spectroscopy provided temperature measurements at late times of plasma evolution (for times 5–80 µs). The emission and absorbance of U I transitions were found to follow the Boltzmann distribution, indicating the plasma is likely in the state of local thermodynamic equilibrium even at late times of its lifetime. The emission and absorption-based time-resolved excitation temperatures demonstrated good agreement at earlier times (≤15 µs) in the overlapped temporal region, while a deviation in the measured values was seen at times (≥15 µs), and potential reasons for such a disagreement are discussed.

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On the use of laser-induced fluorescence to probe the thermodynamic equilibrium in laser-generated plasmas

Cited by 2 publications

References 29 publications

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Comparison of excitation temperature of a laser-produced plasma by combining emission and absorption spectroscopy

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