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Calculated Ag concentrations assuming 0.30 mass fraction Ag in a 2.5 nm thick layer on top of tarnished chalcopyrite inclusions isolated from the Ag2S matrix (Rémond et al. 1984). Concentrations in mass fraction ×100
| Incident energy keV | Experimental concentration | Calculated bulk concentration | Calculated surface concentration |
|---|---|---|---|
| 8 | 0.60 | 0.80 | 0.61 |
| 15 | 0.16 | 0.21 | 0.18 |
| 30 | 0.13 | 0.20 | 0.08 |
CA (ρz) = A* exp – (δρz)2
A* = 30 %, δ = 4 105 cm2 g–1.
