Temperature dependence of surface topography and deuterium interaction with a pure alpha-Fe exposed to low-energy high-flux d plasma

Surface topography and deuterium interaction with alpha-Fe under glow discharge hydrogen (deuterium) ions bombardment with energy of approx 1 keV at ion fluencies of (0.02...1) ·10²⁴ D/m² and various temperatures have been examined. The methods used were scanning electron microscopy, thermal desorption spectroscopy and the D(³He,p)⁴He nuclear reaction. Formation of blisters was observed in the temperature range 230...340 K. Round-shaped cavities contained small nonmetallic particles Fe_xO_y (x=1...2, y=1...4) were founded on the irradiated surface of alpha-Fe. Temperature dependence of average blister diameter, the deuterium depth profile and temperature of deuterium retention were studied.