Helium migration in palladium I. Concentration dependence of helium release |
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| Authors: | J B Holt W Bauer G J Thomas |
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| Institution: | 1. Lawrence Radiation Laboratory , University of California , Livermore, California, 94550;2. Sandia Laboratories , Livermore, California, 94550;3. Sandia Laboratories , Albuquerque, New Mexico, 87115 |
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| Abstract: | Abstract High temperature gas release from helium-implanted palladium has been investigated for He/Pd atom fractions from 5 × 10?6 to 5 × 10?2. The temperature required for 25 per cent He release increases with increasing dose to an atom fraction of 10?4, where a sudden reversal occurs for higher concentrations. The release is associated with dramatic changes in the surface features of the palladium. A qualitative physical model is presented to explain the data. |
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