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- W2014361890 abstract "The measured dechanneling cross-sections of α-particles by interstitial hydrogen atoms and carbon atoms in palladium are very close σH/Pd = (5.7±2.6)×10−3Å2and σC/Pd = (4.6±1.0)×10−3Å2. A model for dechanneling which takes into account only the scattering by the bare nucleus of the interstitial atom explains correctly the dechanneling by interstitial hydrogen (σH/Pd ≈ 4.6×10−3Å2), but greatly overestimates the dechanneling by interstitial carbon (σC/Pd ≈ 28×10−3Å2). We present here an a priori more realistic model which takes into account the screening effects by the remaining electrons around the nucleus of the interstitial and by the electrons of the palladium matrix. This last model gives (i) reasonable values for dechanneling by interstitial carbon (σC/Pd ≈ 5x10−3Å2) and allows one to determine that the more likely degree of ionization of interstitial carbon is small (ZC∗ < 2), but (ii) underestimates the dechanneling cross-section by interstitial hydrogen. A possible explanation could originate from a partial precipitation of hydrogen: the formation of palladium hydride which strongly deforms the crystal would lead to an enhancement of the measured dechanneling cross-section." @default.
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- W2014361890 date "1992-09-01" @default.
- W2014361890 modified "2023-09-30" @default.
- W2014361890 title "Dechanneling cross-sections of α-particles by interstitial atoms in palladium" @default.
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- W2014361890 doi "https://doi.org/10.1016/0168-583x(92)95397-a" @default.
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