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The low-temperature recovery of lead following an electron irradiation at 1.5 K shows the same features observed for all face-centered-cubic metals except for gold. The stage I occurs below 5.5 K. The ID recovery substage occurs at 4.15 ±{} 0.05 K with an activation energy of 0.010 ±{} 0.001 eV. The IE substage shifts with defect concentration in lead as it does in copper. The IE activation energy is 0.010 ±{} 0.001 eV. Since platinum and lead anneal in stage I in the normal fashion, the strange behavior of gold is clearly not determined by its position in the periodic table.
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Birtcher et al. (1976) studied this question.
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