Characterization Of Nano-Second Laser Induced Plasmas From Al Target In Air At Atmospheric Pressure
- Plasma Physics Dept., N. R. C, Egyptian Atomic Energy Authority, 13759 Enshass (Egypt)
- Physics Dept., Faculty of Science, Al-Azhar University, Assuit Branch (Egypt)
- Lab. of Lasers and New Materials, Dept. of Physics, Faculty of Science, Cairo Uni., Cairo (Egypt)
In the present work we study the effect of the laser beam energy on the properties of the plasma generated by focusing an intense laser beam on Al solid target in air at atmospheric pressure. Plasma is generated using a Nd:YAG pulsed laser at 1064 nm wavelength, 6 ns pulse duration with a maximum pulse energy of 750mJ. The emission spectrum is collected using an Echelle spectrometer equipped with ICCD camera Andor type. The measurements were performed at several delay times between 0 to 9 {mu}s. Measurements of temperature and electron density of the produced plasmas at different laser energies and at different delay times are described using different emission spectral lines. Based on LTE assumption, excitation temperature is determined from the Boltzmann plot using O I spectral lines at 777.34, 794.93, and 848.65 nm and the electron density is determined from Stark width of Al II at 281.6 and 466.3 nm. The determined density is compared with the density determined from H{sub {alpha}} spectral line.
- OSTI ID:
- 21251391
- Journal Information:
- AIP Conference Proceedings, Vol. 1047, Issue 1; Conference: LAPAMS'08: 1. international conference on laser plasma applications in materials science, Algiers (Algeria), 23-26 Jun 2008; Other Information: DOI: 10.1063/1.2999927; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of indium zinc oxide thin films by laser-induced breakdown spectroscopy
Spectroscopic study of carbon plasma produced by the first (1064 nm) and second (532 nm) harmonics of Nd:YAG laser