Measurement of plasma characteristics of the optically generated copper plasma by laser spectroscopy technique
- Citation:
- Qindeel, R., and W. Tawfik, "Measurement of plasma characteristics of the optically generated copper plasma by laser spectroscopy technique", Optoelectronics and Advanced Materials, Rapid Communications, vol. 8, no. 7-8: National Institute of Optoelectronics, pp. 741-746, 2014.
Abstract:
Laser-induced breakdown spectroscopy (LIBS) or laser induced plasma spectroscopy (LIPS) technique has been applied to investigate plasma characterization of pure copper in air. The fundamental wavelength of Q-switched Nd:YAG laser beam was focused on the copper target with intensity of about 6.6 × 108 W/cm2 to generate the plasma. The laser intensity was optimized to avoid air breakdown on the target surface. The generated Cu plasma plume was monitored with CCD camera and the emission is analyzed with an Ophir WaveStar spectrometer. The plasma temperature is calculated as 10100 K while plasma density is 5.4 × 1017 cm-3. The CCD observed image of the constructed plasma plume showed that it is oblate shape rather than expected spherical nature. The observed results revealed the spatial distribution of the generated plasma plume expansion towards the laser beam that depends on the plasma properties. The observed ablation profile with the number of laser pulses is also studied. © 2014, National Institute of Optoelectronics. All right reserved.
Notes:
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