Issue 12, 2011

Laser-induced plasma tomography by the Radon transform

Abstract

The Radon transform is tested as a method for reconstruction of the emissivity distribution of asymmetric laser induced plasmas. Two types of experiments were carried out. First, the plasma asymmetry is introduced via focusing the laser by a cylindrical lens to create plasma plumes elongated along the symmetry axis of the lens. Second, an asymmetric power distribution across the laser beam is created by reflecting the latter from a damaged mirror. Various effects on the quality of the plasma emissivity reconstructed by the Radon tomography method are investigated. The understanding of these effects appears to be essential to design a proper experimental setup to study LIBS plasmas by the Radon tomography method. It is demonstrated that the Radon tomography can successfully be used for experimental studies of asymmetric LIBS plasmas.

Graphical abstract: Laser-induced plasma tomography by the Radon transform

Article information

Article type
Paper
Submitted
27 Jun 2011
Accepted
01 Sep 2011
First published
18 Oct 2011

J. Anal. At. Spectrom., 2011,26, 2483-2492

Laser-induced plasma tomography by the Radon transform

S. Merk, S. V. Shabanov, I. B. Gornushkin and U. Panne, J. Anal. At. Spectrom., 2011, 26, 2483 DOI: 10.1039/C1JA10187K

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