Applied Surface Science, Vol.254, No.23, 7989-7992, 2008
Behavior of the reemitted slow positron on hydrogen-adsorbed Ni (1 1 1) surface
We have analyzed the Doppler broadening spectra of the positron annihilation and reemitted slow positrons from hydrogen-adsorbed Ni(1 1 1) surface on different adsorbing conditions. It is shown that the escaping of reemitted slow positrons and ortho-positroniums from hydrogen-lightly adsorbed Ni (1 1 1) is more than that of hydrogen-saturatedly adsorbed Ni (1 1 1).