INTERPRETATION OF HELIUM ATOM SCATTERING FROM ISOLATED CO MOLECULES ON COPPER (001) BASED ON AN EXACT QUANTUM MECHANICAL MODEL

摘要

The previously reported scattering of He atoms from isolated CO molecules on Cu(001) has been reinterpreted using an exact quantum mechanical model assuming a hard hemisphere on a hard flat surface. From a best fit of all the observed oscillations for each incident energy an effective radius for the hemisphere is determined. The radius increases from a=2.4 to 4.4 Angstrom as the incident energy decreases from 40.3 to 9.4 meV, as expected in view of the soft repulsion and long-range attraction of the true potential. (C) 1997 American Institute of Physics. [References: 8]