Diagnostics and characterization of nanodust and nanodusty plasmas
- 151 Downloads
Plasmas growing or containing nanometric dust particles are widely used and proposed in plasma technological applications for production of nano-crystals and surface deposition. Here, we give a compact review of in situ methods for the diagnostics of nanodust and nanodusty plasmas, which have been developed in the framework of the SFB-TR24 to fully characterize these systems. The methods include kinetic Mie ellipsometry, angular-resolved Mie scattering, and 2D imaging Mie ellipsometry to get information about particle growth processes, particle sizes and particle size distributions. There, also the role of multiple scattering events is analyzed using radiative transfer simulations. Computed tomography and Abel inversion techniques to get the 3D dust density profiles of the particle cloud will be presented. Diagnostics of the dust dynamics yields fundamental dust and plasma properties like particle charges and electron and ion densities. Since nanodusty plasmas usually form dense dust clouds electron depletion (Havnes effect) is found to be significant.
- 17.H.G. Tompkins, A.I. Irene editors, Handbook of ellipsometry (William Andrew Publishing, Norwich, 2005) Google Scholar
- 18.E. Collett, B. Schaefer, Polarized light for scientists and engineers (The Polawave Group, Long Branch, NY, 2012) Google Scholar
- 19.C.F. Bohren, D.R. Huffman, Absorption and scattering of light by small particles (John Wiley & Sons, New York, 1983) Google Scholar
- 20.H.C. van de Hulst, Light scattering by small particles (John Wiley & Sons, New York, 1957) Google Scholar