Abstract
In order to improve the existing plasma techniques and to develop new processes, physicists and engineers need predictive models based on plasma physics, chemical physics and hydrodynamics. The knowledge of physical and chemical data must be checked or determined through experiments. Moreover, the reproducibility of a process is largely related to the control of some determining plasma parameters, which can be performed through diagnostics. For all these reasons plasma diagnostic techniques are of fundamental importance. In the last 30 years, many types of plasma diagnostics have been developed (Lochte-Holtgreven 1968; Donnelly et al. 1990; Preppernau et al. 1993; Jolly 1995), each of them allowing one to access one or more plasma parameters, but no one being able to fully characterize plasmas. So, plasma physicists have to simultaneously or successively use various diagnostics depending on the objective of their study. Among the main techniques currently used to characterize plasmas we may mention electric and magnetic probes, mass spectrometry, emission and absorption spectroscopy and laser-based techniques.
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Loureiro, J., Amorim, J. (2016). Laser Spectroscopy. In: Kinetics and Spectroscopy of Low Temperature Plasmas. Graduate Texts in Physics. Springer, Cham. https://doi.org/10.1007/978-3-319-09253-9_10
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