Next Article in Journal
Improved Image Splicing Forgery Detection by Combination of Conformable Focus Measures and Focus Measure Operators Applied on Obtained Redundant Discrete Wavelet Transform Coefficients
Previous Article in Journal
Application of Differential Transform to Multi-Term Fractional Differential Equations with Non-Commensurate Orders
Previous Article in Special Issue
Lorenz Type Behaviors in the Dynamics of Laser Produced Plasma
Open AccessArticle

Investigations of Laser Produced Plasmas Generated by Laser Ablation on Geomaterials. Experimental and Theoretical Aspects

1
Faculty of Physics, LOA-SL, Alexandru Ioan Cuza University of Iasi, 700506, Romania
2
Institute for Laser, Plasma and Radiation Physics, Bucharest 077125, Romania
3
Faculty of Materials Science and Engineering "Gh. Asachi" Technical University from Iasi, 700050, Romania
4
Department of Geology, Babes-Bolyai University, Cluj-Napoca 400084, Romania
5
Integrated Center for Studies in Environmental Science for North-East Region (CERNESIM), Alexandru Ioan Cuza University of Iasi, 700506, Romania
6
Department of Physics, “Gh. Asachi” Technical University of Iasi, Iasi 700050, Romania
7
Romanian Scientists Academy, Bucharest 050094, Romania
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(11), 1391; https://doi.org/10.3390/sym11111391
Received: 21 October 2019 / Revised: 4 November 2019 / Accepted: 7 November 2019 / Published: 9 November 2019
(This article belongs to the Special Issue Advances in Laser Produced Plasmas Research)
Several surface investigation techniques, such as X-ray diffraction (XRD), EDX, and optical microscopy, were employed in order to describe the mineral contents in several geomaterials. Space and time resolved optical emission spectroscopy was implemented to analyze the plasma generated by the laser–geomaterial interaction. The values of the plasma parameters (velocity and temperature) were discussed with respect to the nature of the minerals composing the geomaterials and the morphological structure of the samples. Correlations were found between the excitation temperatures of the atomic and ionic species of the plasmas and the presence of calcite in the samples. A mathematical model was built to describe the dynamics in ablation plasma using various mathematical operational procedures: multi structuring of the ablation plasma by means of the fractal analysis and synchronizations of the ablation plasma entities through SL (2R) type group invariance and in a particular case, through self-modulation in the form of Stoler type transformations. Since Stoler type transformations are implied in general, in the charge creation and annihilation processes, then the SL (2R) type group invariance become fundamental in the description of ablation plasma dynamics.
Keywords: optical emission spectroscopy; laser ablation; petrographic analysis; fractal model; group invariance. optical emission spectroscopy; laser ablation; petrographic analysis; fractal model; group invariance.
Show Figures

Graphical abstract

MDPI and ACS Style

Enescu, F.; Irimiciuc, S.A.; Cimpoesu, N.; Bedelean, H.; Bulai, G.; Gurlui, S.; Agop, M. Investigations of Laser Produced Plasmas Generated by Laser Ablation on Geomaterials. Experimental and Theoretical Aspects. Symmetry 2019, 11, 1391.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop