7A2 - Ion emission from laser irradiated tungsten

The masses, energies, and numbers of ions emitted by a tungsten surface upon irradiation with a laser beam have been studied using a time-of-flight spectrometer. For light fluxes of 20 to 70 MW/cm²the ion emission consists primarily of adsorbed species. Ion energies up to 180 eV have been measured. It is shown that inverse Bremsstrahlung cannot account for the high energies observed.