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<p>In this work, optical emission spectra of laser induced plasma generated by Nd: YAG laser with a fundamental wavelength of (1064) nm from zinc: copper target (Zn: Cu) at a mixing ratio of 0.7:0.3 using different pulsed energy within range (400–800) mJ. The Boltzmann plot approach was used to calculate the electron temperature (<i>T</i><sub><i>e</i></sub>) while the Stark broadening was utalized to calculate the electron number density (<i>n</i><sub><i>e</i></sub>). Measurements were also made of other plasma characteristics, including plasma frequency (<i>f</i><sub><i>p</i></sub>), Debye length (<i>λ</i><sub><i>D</i></sub>), and Debye number (<i>N</i><sub><i>D</i></sub>). The variations in electron densities and temperatures as a function of laser energy were examined. The plasma parameters reveal that increasing the laser energy from 400&#xa0;mJ to 800&#xa0;mJ cause the increasing the electron temperature (Te) from 0.742&#xa0;eV to 0.933&#xa0;eV, indicating that higher laser energy results in a hotter plasma due to the moretransfersd energy to the target material and to mthe plasma plume. Similarly, the electron number density (ne) increases from 0.879 × 10<sup>18</sup> to 1.091 × 10<sup>18</sup> (cm<sup>-3</sup>). These findings can be used to optimize ablation processes to create nanoparticles for numerous scientific applications.</p>

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Spectroscopic analysis of Zn: Cu plasmas produced by Nd: YAQ laser at λ = 1064 nm

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Sana Abdulateef,
  • Kadhim A. Aadim

摘要

In this work, optical emission spectra of laser induced plasma generated by Nd: YAG laser with a fundamental wavelength of (1064) nm from zinc: copper target (Zn: Cu) at a mixing ratio of 0.7:0.3 using different pulsed energy within range (400–800) mJ. The Boltzmann plot approach was used to calculate the electron temperature (Te) while the Stark broadening was utalized to calculate the electron number density (ne). Measurements were also made of other plasma characteristics, including plasma frequency (fp), Debye length (λD), and Debye number (ND). The variations in electron densities and temperatures as a function of laser energy were examined. The plasma parameters reveal that increasing the laser energy from 400 mJ to 800 mJ cause the increasing the electron temperature (Te) from 0.742 eV to 0.933 eV, indicating that higher laser energy results in a hotter plasma due to the moretransfersd energy to the target material and to mthe plasma plume. Similarly, the electron number density (ne) increases from 0.879 × 1018 to 1.091 × 1018 (cm-3). These findings can be used to optimize ablation processes to create nanoparticles for numerous scientific applications.