Studies by field ion microscopy are reported of the structure of tungsten s
pecimens, irradiated by high intensity ion flux (similar to 10(22) ions/cm(
2) per s) produced in a laser plasma of lead. Amorphousness of the tip spec
imen was observed; the types of defects produced are assessed. The ultimate
mechanical properties of irradiated tip specimens are determined. Future d
irections of research are outlined. (C) 1999 Elsevier Science S.A. All righ
ts reserved.