title: Experimental determination of electronic density and temperature in water-confined plasmas generated by laser shock processing
creator: Colón Hernández, Cristóbal
creator: Andrés García, María Isabel de
creator: Moreno Díaz, Cristina
creator: Alonso Medina, Aurelia
creator: Porro González, Juan Antonio
creator: Angulo Ramonell, Ignacio
creator: Ocaña Moreno, José Luis
subject: Physics
description: 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.
publisher: E.T.S.I. Diseño Industrial (UPM)
rights: https://creativecommons.org/licenses/by-nc-nd/3.0/es/
date: 2019-07
type: info:eu-repo/semantics/article
type: Article
source: Metals, ISSN 2075-4701, 2019-07, Vol. 9, No. 7
type: PeerReviewed
format: application/pdf
language: eng
relation: https://www.mdpi.com/2075-4701/9/7/808
relation: info:eu-repo/grantAgreement/MINECO//MAT2015-63974-C4-2-R
rights: info:eu-repo/semantics/openAccess
relation: info:eu-repo/semantics/altIdentifier/doi/10.3390/met9070808
identifier: https://oa.upm.es/56008/