20 research outputs found
Atomic Force Microscopy Study of the Kinetic Roughening in Nanostructured Gold Films on SiO2
Dynamic scaling behavior has been observed during the room-temperature growth of sputtered Au films on SiO2using the atomic force microscopy technique. By the analyses of the dependence of the roughness, σ, of the surface roughness power,P(f), and of the correlation length,ξ, on the film thickness,h, the roughness exponent,α = 0.9 ± 0.1, the growth exponent,β = 0.3 ± 0.1, and the dynamic scaling exponent,z = 3.0 ± 0.1 were independently obtained. These values suggest that the sputtering deposition of Au on SiO2at room temperature belongs to a conservative growth process in which the Au grain boundary diffusion plays a dominant role
Antihydrogen formation by autoresonant excitation of antiproton plasmas
One of a series of conference papers (presented at the Vancouver LEAP meeting) giving more detailed descriptions of aspects of the ALPHA/Swansea work on positrons and antihydrogen