Comment:
Rh(110)-(2x2)p2mg - O. 1E-5 mbar s O2 were dosed at 125 K and then flashed to 1000 K. The Rh(110) sample was cleaned by many cycles of ion bombardment, annealing and treatment in O2 (p = 1E-7 mbar, T =1100 K), followed by flashing to 1400 K. The emission angles were 0 and 70 degrees.