Three‐halves harmonic spectra measured at three different observation angles from 0.53 &mgr;m laser produced plasmas are presented. The results are compared with existing models. On plastic targets a very good fit is obtained with Barr’s model withTe&bartil;1.6 keV and a plasma velocity atnc/4 ofv&bartil;8.107cm/sec. For higherZmaterial, the electron temperature seems to increase and Landau damping may become significant.