SPECTRAL STUDIES OF THE Al2O3 AND AlN NANOPOWDER FORMATION EXPOSED ALUMINUM BY A SERIES OF TWIN LASER PULSES IN THE AIR ATMOSPHERE

Abstract

A study of the Al2O3 and AlN nanopowder formation under the influence of twin laser pulses with an energy of 52 mJ and between the pulse interval of 10 microseconds on an aluminum target placed in a closed glass rectangular box, depending on the number of pulses. It was found that the highest intensity of the bands of AlO suboxide and AlN molecules is observed at 40 - 50 consecutive double pulses in a series. The size of the primary particles estimated using the high-resolution electron microscopy was mainly 30 - 40 nm, the particles were collected in agglomerates. The possibility of obtaining active forms of aluminum oxides and products of their interaction with oxygen and air nitrogen in a laser plasma deposited on a glass surface is shown by RAMAN methods.

Keywords

• oxidized nanopowders al
• al2o3
• aln
• alo suboxides
• pulsed laser sputtering
• laser plasma
• laser spark spectrometry
• multicharged ions
• dual laser pulses