Research Article
Physics Features of TRU-Fueled VHTRs
Table 3
Reactor physics parameters for three and four ring LEU-VHTR configurations.
| Number of rings | Enrichment | Effective multiplication factor | Average neutron lethargy causing fission (eV) |
| 3 | 3 | 0.863 | n/a | 3 | 8 | 1.181 | 0.2188 | 3 | 9 | 1.214 | 0.2316 | 3 | 10 | 1.239 | 0.2463 | 3 | 15 | 1.328 | 0.3168 | 3 | 20 | 1.409 | 0.3994 | 3 | 40 | 1.481 | 0.8380 |
| 4 | 3 | 0.903 | n/a | 4 | 8 | 1.218 | 0.2229 | 4 | 9 | 1.252 | 0.2106 | 4 | 10 | 1.278 | 0.2524 | 4 | 15 | 1.365 | 0.3295 | 4 | 20 | 1.414 | 0.4158 | 4 | 40 | 1.510 | 0.8926 |
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