Plasma Generated by Laser Ablation

*Practical Applications of Laser Ablation*

[51] A. V. Kabashin and M. Meunier, Photoluminescence characterization of Si-based nanostructured films produced by pulsed laser ablation, J. Vac. Sci. Technol. B 19-6, 2217-2222 (2001), DOI:

[58] A. J. Pedraza, J. D. Fowlkes, D. A. Blom, H. M. Meyer, Laser-induced nanoparticle ordering, J. Mater. Res. 17-11, 2815-2822(2002), DOI: 10.1557/

[59] Han Min, Wang Zhaoye, Chen Pingping, Yu Shengwen, Wang Guanghou, Mechanism of neutral cluster beam deposition, Nucl. Instr. Meth. Phys. Res. B135, 1-4, 564-569(1998), DOI: 10.1016/ S0168-583X(97)00635-6

[60] M. Muto, M. Oki, Y. Iwata, H. Yamauchi, H. Matsuhata, S. Okayama, Y. Ikuhara, T. Iwamoto and T. Sawada, Silicon nanoparticle lattice system(CLS)

formed on an amorphous carbon surface by supersonic nanoparticle beam irradiation, Proc. Int. Symp. On Atomic Nanoparticle Collisions,

[61] Y. Iwata, Silicon Nanoblocks Pave The Way for A New Conceptual Nanoarchitecture, AIST Today Vol. 3,

[63] M. Hassan, M. A. Gondal, E. Cevikc, T. F. Qahtan, A. Bozkurt, M. A. Dastageer, High performance pliable supercapacitor fabricated using activated carbon nanospheres intercalated into boron nitride nanoplates by pulsed laser ablation technique, Arabian J. Chem., vol.13-8, p.6696-6707(2020), DOI: 10.1016/j.

[62] Q. Rehman, A. D. Khan, M. Noman, H. Ali, A. Raufd and M. S. Ahmad, Super absorption of solar energy using a plasmonic nanoparticle based CdTe solar cell, RSC Advances, Issue 59, (2019), DOI: 10.1039/C9RA07782K

Saint-Peteraburg(2003)

No. 7, 4-6 (2003)

arabjc.2020.06.024

JMR.2002.0409

[52] X. Y. Chen, Y. F. Lu, Y. H. Wu, B. J. Cho, M. H. Liu, D. Y. Dai and W. D. Song, Mechanisms of photoluminescence from silicon nanocrystals formed by pulsed-laser deposition in argon and oxygen ambient, J. Appl. Phys. 93-10, 6311- 6319(2003), DOI: 10.1063/1.1569033

[53] A. V. Kabashin, J.-P. Sylvestre, S. Patskovsky and M. Meunier, Correlation between photoluminescence properties and morphology of laser-ablated Si/SiOx nanostructured films, J. Appl. Phys. 91-5, 3248-3254(2002),

[54] L. Zbroniec, T. Sasaki, N. Koshizaki, Ambient gas effects on iron oxide particle aggregated films prepared by laser ablation, Scripta mater. 44, 8-9, 1869-1872(2001), DOI: 10.1016/

[55] Q. Li, T. Sasaki and N. Koshizaki,

morphology and size of cobalt (II,III) oxide nanoparticles prepared by pulsed-laser ablation, Appl. Phys. A 69, 115-118(1999), DOI: 10.1007/

[56] S. Li, M. S. El-Shall, Synthesis of nanoparticles by reactive laser vaporization: silicon nanocrystals in polymers and properties of gallium and tungsten oxides, Appl. Surf. Sci. 127-129, 330-338(1998), DOI: 10.1016/

[57] J. D. Fowlkes, A. J. Pedraza, D. A. Blom and H. M. Meyer III, Surface microstructuring and long-range ordering of silicon nanoparticles, Appl. Phys. Lett. 80-20, 3799-3801(2002),

S0169-4332(97)00651-X

DOI: 10.1063/1.1480106

DOI:10.1063/1.1446217

S1359-6462(01)00735-7

s003390050982

Pressure dependence of the

10.1116/1.1420494

**118**

**Chapter 7**

**Abstract**

of the ablation plasmas.

**1. Introduction**

**121**

Dynamics of Transient Plasmas

*Stefan Andrei Irimiciuc, Norina Forna, Andrei Agop, Maricel Agop, Stefan Toma and Doriana Forna Agop*

**Keywords:** shape memory alloy, laser ablation, transient plasma,

optical emission spectroscopy, fractal model

Memory Shape Alloys

Generated by ns Laser Ablation of

Understanding the underline fundamental mechanism behind experimental and industrial technologies embodies one of the foundations of the advances and tailoring new materials. With the pulsed laser deposition being one of the key techniques for obtaining complex biocompatible materials with controllable stoichiometry, there is need for experimental and theoretical advancements towards understanding the dynamics of multi component plasmas. Here we investigate the laser ablation process on Cu-Mn-Al and Fe-Mn-Si by means of space-and time-resolved optical emission spectroscopy and fast camera imaging. In a fractal paradigm the space–time homographic transformations were correlated with the global dynamics

The dynamics of the ejected particles as a results of high power laser and solid matter is not a trivial problem, as it was showcased in several papers [1, 2]. The problem of complex materials, as it is the case of metallic alloys, it consists in differences in the physical properties of the composing elements. Phenomena like heterogenous melting and vaporization [3] are commonly reported for ns laser ablation, with dire consequences for applications like pulse laser deposition. Target material heterogeneity should be reflected in the dynamics of the ejected particles, which is often difficult to observe in industrial applications like laser welding, cutting, surface cleaning, but is otherwise excellent showcased in applications like LIBS or plasma spectroscopy. The amalgam of plasma entities found in a transient plasma generated by laser ablation contains ions, atoms, molecules, electron and photons. The most often used technique extensively reported by the other groups [4] or even by our group are non-invasive ones that can differentiate between the contribution of each individual component of the plasma in particular conditions even reflect the complex local and global phenomena reported in recent years. These techniques are mainly concerning the optical emission spectroscopy. Understanding laser based technologies and the interaction between high energy laser beam and metallic alloys are now relevant for a wide range of applications with fast
