Open Access
Table 1
Properties assumed for fission gas production, diffusion and distribution. NA is the Avogadro number, T denotes temperature in kelvin and φ is the local fission rate density in fissions (m3s)−1. The coefficient used for the athermal part of Dl is an average of the values proposed in [50, 53].
| Property/parameter | Unit | Source | ||
|---|---|---|---|---|
| β | = | 0.31φ∕NA | [mol/(m3s)] | [40] |
| Bgb | = | 1.44 × 10−8β | [m/s] | This work |
| Dl | = | 7.60 × 10−10e−35247∕T | ||
| + |  |
[m2/s] | [49, 50, 53] | |
| + | 1.00 × 10−39φ | |||
| τg | = | 7.2 × 104 | [s] | This work |
| rbi | = | 1.453 × 10−10eT∕978 | [m] | [54] |
| nbi | = | 1.52 × 1027∕T − 3.3 × 1023 | [m−3] | [52, 54] |
| lf | = | 6 × 10−6 | [m] | [55] |
| δf | = | 1 × 10−9 | [m] | [52] |
| crk | = | 1.4 × 10−4 | [(kgU)/(MWd)] | This work |
| rg | = | 4.2 × 10−6 | [m] | This work |
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