WAVE-PACKET STUDY OF H- DECAY IN FRONT OF A METAL-SURFACE

The dependences of the energy and width of H- ion resonance states on the distance from an Al surface are calculated with the method of wave -packet evolution. Calculations are made for two representations of th e potential which describe the interaction of the electron and the hyd rogen atom. It is shown that the difference between the results of pre vious calculations by P. Nordlander [Phys. Rev. A 46 (1992) 2584] and by D. Teillet-Billy and J.-P. Gauyacq [Surf. Sci. 269/270 (1992) 425] is due to a difference in treatment of the e-H interaction.