Laser-induced plasma spectroscopy (LIPS), is being used as an analytical method by a growing number of research groups. 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 Nd: YAG pulsed laser at 1064 nm wavelength, 6 ns pulse duration with maximum pulse energy of 750mJ. The emission spectrum is collected using an Echelle spectrometer equipped with ICCD camera Andor type. Measurements of temperature and electron density of the...