Some Remarks on Diffusion Model of Positron Reemission and/or Positron Surface Trapping |
| M. Dębowska and W. Świątkowski Institute of Experimental Physics, Wrocław University, Pl. M. Borna 9, 50-204 Wrocław, Poland |
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| The problem of a role of boundary conditions in a diffusion model of positron reemission is discussed. It was shown that a sink rate cannot change from zero up to infinity but has an upper limit equal to a half of a mean positron velocity. Some additional relations connected with this result are presented as well. |
| DOI: 10.12693/APhysPolA.95.515 PACS numbers: 68.35.Wm |