The scattering of nonpolarized atoms by a macroscopic metallic cylinder is studied in detail. The interaction potential for such a system has been presented in a previous paper. Applying it to the Cs-Au system we find that the disagreement between theory and experiment can actually be explained in terms of surface roughness only, while dynamical corrections and geometrical effects are negligible. Our result differs somewhat from the Mehl and Schaich analysis, but it does not conflict with their findings, since the two models for the surface are different. In addition we present an analytical solution for the intensity that can be advantageously employed to within 3% of accuracy and can be retained exact for a z-n-type potential. This allows us to show how the averaged potential remains, a good quantity to work with even if the fluctuations are large
VANDERWAALS INTERACTION BETWEEN A POINT PARTICLE AND A METALLIC SURFACE .2. APPLICATIONS
TOIGO, FLAVIO
1982
Abstract
The scattering of nonpolarized atoms by a macroscopic metallic cylinder is studied in detail. The interaction potential for such a system has been presented in a previous paper. Applying it to the Cs-Au system we find that the disagreement between theory and experiment can actually be explained in terms of surface roughness only, while dynamical corrections and geometrical effects are negligible. Our result differs somewhat from the Mehl and Schaich analysis, but it does not conflict with their findings, since the two models for the surface are different. In addition we present an analytical solution for the intensity that can be advantageously employed to within 3% of accuracy and can be retained exact for a z-n-type potential. This allows us to show how the averaged potential remains, a good quantity to work with even if the fluctuations are largePubblicazioni consigliate
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