Spectroscopy Diagnostic of Laser Intensity Effect on Zn Plasma Parameters Generated by Nd: YAG Laser

Authors

  • Raghad S. Mohammed Department of Physics, College of Science, Mustansiriyah University, Baghdad, Iraq https://orcid.org/0000-0001-6164-6735
  • Kadhim A. Aadim Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq
  • Khalid A. Ahmed Department of Physics, College of Science, Mustansiriyah University, Baghdad, Iraq

DOI:

https://doi.org/10.24996/ijs.2022.63.9.5

Keywords:

Zn plasma, Spectroscopy diagnostic, Plasma parameters, LET

Abstract

      The creation and characterization of laser-generated plasma are affected by laser irradiance, representing significant phenomena in many applications.  The present work studied the spectroscopy diagnostic of laser irradiance effect on Zn plasma features created in the air by a Q-switched Nd: YAG laser at the fundamental wavelength (1064nm).  The major plasma parameters (electron temperature and electron density) have been measured using the Boltzmann plot and the Stark broadening methods.  The value of electrons temperature ranged from 6138–6067 K, and the electron density in the range of 1.4×1018 to 2×1018 cm-3, for laser irradiance range from 2.1 to 4.8×108 (W/cm2).  The McWhirter criterion for preserving a local thermodynamic equilibrium (LTE) condition is confirmed in this study.  Furthermore, other fundamental plasma parameters, such as Debye length (λD), number of particles in Debye sphere (ND), and plasma frequency (ωp), were measured. We found that all plasma parameters are affected by laser intensity.

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Published

2022-09-30

Issue

Section

Physics

How to Cite

Spectroscopy Diagnostic of Laser Intensity Effect on Zn Plasma Parameters Generated by Nd: YAG Laser. (2022). Iraqi Journal of Science, 63(9), 3711-3718. https://doi.org/10.24996/ijs.2022.63.9.5

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