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Plasma-Material Interaction Data Set 223
Diffusivity of H in Cu
$$
D = D_0 \exp\left(-\frac{E_\mathrm{d}}{k_\mathrm{B}T}\right)
$$
[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]
- Material: Cu
- Material composition: 99.999%
- Method: Experiment
- Data scaled for isotope mass? No
- D0 = 1.130(40)e-6 m2 s-1
- Ed = 0.4 eV
- T = 723 – 1198 K
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- B22: L. Katz, M. Guinan, R. J. Borg, "Diffusion of H2, D2, and T2 in Single-Crystal Ni and Cu", Physical Review B 4, 330-341 (1971). [10.1103/physrevb.4.330]
Comment
Diffusion coefficient measured by outgassing spherical sample initially saturated by hydrogen. The pressure is thus very low. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.