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Plasma-Material Interaction Data Set 82
Permeation of T in W
$$
P = P_0 \exp\left(-\frac{E_\mathrm{p}}{k_\mathrm{B}T}\right)
$$
[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]
- Material: W
- Material composition: 99.95%
- Method: Experiment
- Data scaled for isotope mass? No
- P0 = 2.13e-09 mol m-1 s-1 Pa-1/2
- Ep = 0.97 eV
- T = 573 – 873 K
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- B66: M. Shimada, R. Pawelko, "Tritium permeability in polycrystalline tungsten
", Fusion Engineering and Design 146, 1988-1992 (2019). [10.1016/j.fusengdes.2019.03.083]
Comment
Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.