TITLE:
Study by Inverse Method the Size Distribution of the Particle of Carbonaceous Generated in RF Discharge
AUTHORS:
A. El Kebch, M. El Mouden, N. Dlimi, D. Saifaoui
KEYWORDS:
Particle Size Distribution, Dust Plasma, Light Extinction Spectroscopy Measurements, Mie theory, Inversion, Tikhonov Regularization
JOURNAL NAME:
Optics and Photonics Journal,
Vol.9 No.7,
July
22,
2019
ABSTRACT: One of the difficulties encountered in the study of dusty plasmas is related to the knowledge of the size of the dust particles present. A variety of sources, physical and chemical mechanisms of formation, causes a wide variety of sizes and morphologies of dust. The diameter of a dust will not be unique but spread over several orders of magnitude. Its distribution in number, surface, mass or volume is called distribution. It is important to know this distribution in particle size because it strongly impacts the physical and radiative processes. To have a dust distribution in situ is very difficult; the reverse method can identify the particle populations from light extinction measures. In this study, we present an inversion procedure with a Tikhonov regularization dedicated to the determination of volume size distribution (V-PSD) from extinction measurements corresponding to the different wavelengths obtained by the Extinction Spectrometry technique.