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Moreno-Diaz, C.Corresponding AuthorAlonso-Medina, A.AuthorColon, C.Corresponding AuthorPorro, J. A.AuthorOcana, J. L.Author

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June 9, 2019
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Measurement of plasma electron density generated in an experiment of Laser Shock Processing, utilizing the H alpha-line

Publicated to: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY. 232 9-18 - 2016-06-01 232(), DOI: 10.1016/j.jmatprotec.2016.01.026

Authors:

Moreno-Diaz, C; Alonso-Medina, A; Colon, C; Porro, J A; Ocana, J L
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Affiliations

Análisis y Caracterización Óptica de Materiales. Universidad Politécnica de Madrid - Author
Univ Politecn Madrid, ETSIDI, Dept Appl Phys, Ronda Valencia 3, Madrid 28012, Spain - Author
Univ Politecn Madrid, ETSII, Dept Appl Phys, Jose Gutierrez Abascal 2, Madrid 28006, Spain - Author
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Abstract

In this work we have realized plasma diagnosis produced by Laser (LPP), by means of emission spectroscopy in a Laser Shock Processing (LSP). The LSP has been proposed as an alternative technology, competitive with classical surface treatments. The ionic species present in the plasma together with electron density and its temperature provide significant indicators of the degree of surface effect of the treated material. In order to analyze these indicators, we have realized spectroscopic studies of optical emission in the laser-generated plasmas in different situations. We have worked focusing on an aluminum sample (Al2024) in air and/or in LSP conditions (water flow) a Q-switched laser of Nd:YAG (lambda = 1.06 mu m, 10 ns of pulse duration, running at 10 Hz repetition rate). The pulse energy was set at 2,5 J per pulse. The electron density has been measured using, in every case, the Stark broadening of H Balmer alpha line (656.27 nm). In the case of the air, this measure has been contrasted with the value obtained with the line of 281.62 nm of Al II. Special attention has been paid to the self-absorption of the spectral lines used. The measures were realized with different delay times after the pulse of the laser (1-8 mu s) and with a time window of 1 mu s. In LSP the electron density obtained was between 10(17) cm(-3) for the shortest delays (4-6 mu s), and 10(16) cm(-3) for the greatest delays (7,8 mu s). (C) 2016 Elsevier B.V. All rights reserved.
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Keywords

AluminumElectron densityHydrogenHydrogen linesIrradiationLaser shock processingLead plasmaMetallic alloysModelParametersPlasma diagnosisSpectral-linesStark widthsSurface

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal JOURNAL OF MATERIALS PROCESSING TECHNOLOGY due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2016, it was in position 64/275, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-27:

  • WoS: 19
  • Scopus: 18
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Impact and social visibility

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/39474/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 525
  • Downloads: 985
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (MORENO DIAZ, CRISTINA) and Last Author (OCAÑA MORENO, JOSE LUIS).

the authors responsible for correspondence tasks have been MORENO DIAZ, CRISTINA and COLON HERNANDEZ, CRISTOBAL.

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Awards linked to the item

This work has been supported by the Spanish DGI project MAT2012-37782.
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