Experimental determination of electronic density and temperature in water-confined plasmas generated by laser shock processing

Colón Hernández, Cristóbal and Andrés García, María Isabel de and Moreno Díaz, Cristina and Alonso Medina, Aurelia and Porro González, Juan Antonio and Angulo Ramonell, Ignacio and Ocaña Moreno, José Luis (2019). Experimental determination of electronic density and temperature in water-confined plasmas generated by laser shock processing. "Metals", v. 9 (n. 7); pp. 808-822. ISSN 2075-4701. https://doi.org/10.3390/met9070808.

Description

Title: Experimental determination of electronic density and temperature in water-confined plasmas generated by laser shock processing
Author/s:
  • Colón Hernández, Cristóbal
  • Andrés García, María Isabel de
  • Moreno Díaz, Cristina
  • Alonso Medina, Aurelia
  • Porro González, Juan Antonio
  • Angulo Ramonell, Ignacio
  • Ocaña Moreno, José Luis
Item Type: Article
Título de Revista/Publicación: Metals
Date: July 2019
ISSN: 2075-4701
Volume: 9
Subjects:
Freetext Keywords: Laser shock processing; Plasma diagnosis; Electron density
Faculty: E.T.S.I. Diseño Industrial (UPM)
Department: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this work, diagnoses of laser-induced plasmas were performed in several Laser Shock Processing (LSP) experiments using the Balmer Hα-line (656.27 nm) and several Mg II spectral lines. A Q-switched laser of Nd:YAG was focused on aluminum samples (Al2024-T351) in LSP experiments. Two methods were used to diagnose the plasma. The first method, which required two different experiments, was the standard for establishing the electronic temperature through the use of a Boltzmann Plot with spectral lines of Mg II and self-absorption correction. The Stark width of the Balmer Hα-line was used to determine the electron density in each of the cases studied. The second method had lower accuracy, but only required an experimental determination. Two parameters, the electronic temperature and the electron density, were obtained with the aid of the Hα-line in a single data acquisition process. The order of magnitude of the temperature obtained from this last method was sufficiently close to the value obtained by the standard method (within a factor lower than 2.0), which is considered to be important in order to allow for its possible use in industrial conditions.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2015-63974-C4-2-RLSP-BIOMAGJosé Luis Ocaña MorenoTratamiento mediante LSP de aleaciones de magnesio biodegradables y bioreabsorbibles como método de mejora de sus propiedades mecánicas

More information

Item ID: 56008
DC Identifier: http://oa.upm.es/56008/
OAI Identifier: oai:oa.upm.es:56008
DOI: 10.3390/met9070808
Official URL: https://www.mdpi.com/2075-4701/9/7/808
Deposited by: Memoria Investigacion
Deposited on: 30 Aug 2019 08:30
Last Modified: 30 Aug 2019 08:30
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