eprintid: 56008 rev_number: 13 eprint_status: archive userid: 1903 dir: disk0/00/05/60/08 datestamp: 2019-08-30 08:30:51 lastmod: 2019-08-30 08:30:51 status_changed: 2019-08-30 08:30:51 type: article metadata_visibility: show creators_name: Colón Hernández, Cristóbal creators_name: Andrés García, María Isabel de creators_name: Moreno Díaz, Cristina creators_name: Alonso Medina, Aurelia creators_name: Porro González, Juan Antonio creators_name: Angulo Ramonell, Ignacio creators_name: Ocaña Moreno, José Luis creators_id: juanantonio.porro@upm.es creators_id: jlocana@etsii.upm.es title: Experimental determination of electronic density and temperature in water-confined plasmas generated by laser shock processing publisher: MDPI rights: by-nc-nd ispublished: pub subjects: fisica full_text_status: public keywords: Laser shock processing; Plasma diagnosis; Electron density 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. date_type: published date: 2019-07 publication: Metals volume: 9 number: 7 pagerange: 808-822 id_number: 10.3390/met9070808 institution: ETSI_Diseno department: Ingenieria_electrica_2014 refereed: TRUE issn: 2075-4701 official_url: https://www.mdpi.com/2075-4701/9/7/808 comprojects_type: MINECO comprojects_code: MAT2015-63974-C4-2-R comprojects_acronym: LSP-BIOMAG comprojects_leader: José Luis Ocaña Moreno comprojects_title: Tratamiento mediante LSP de aleaciones de magnesio biodegradables y bioreabsorbibles como método de mejora de sus propiedades mecánicas citation: 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 . document_url: http://oa.upm.es/56008/1/INVE_MEM_2019_303931.pdf