Bilayers of Fe/Al have been used to contrast two types of irradiations, pulsed-beam and conventional implantation. The Fe/Al bilayers were reacted with ∼ 70 ns, 280 keV light ion pulsed-beam irradiation and 550 keV Xe ion implantation. Rutherford backscattering spectrometry and electron and X-ray diffraction data reveal that pulsed beam irradiation results in substantially larger interface reactions compared to Xe implantation. Monte Carlo simulations indicate that the reactions observed in the pulsed-beam irradiated Fe/Al do not stem from nuclear cascade mixing and heating. These reactions are the result of lattice heating which occurs when the energy deposited into the electronic system of the Fe/Al is coupled to the lattice. Heat flow calculations have indicated that the irradiation induced lattice heating causes rises in the surface temperature and the melting of Al.
ASJC Scopus subject areas
- Nuclear and High Energy Physics