Laser-Induced Breakdown Spectroscopy Applied on Liquid Films: Effects of the Sample Thickness and the Laser Energy on the Signal Intensity and Stability

Figure 8

LIBS spectra from peanut oil on aluminum substrate (polishing 400 grits/mm) averaged over 10 laser pulses with energies of 23 mJ (top) and 137 mJ (bottom); the rotation speed is 40 rpm.