Table 5: Production weight of Re after 3 years irradiation.

Case Number of pins Pin layout W load Re weight Re/W 185Re 187Re 187Re/185Re
(kg) (kg) (kg) (kg) (kg) -
Case 1 ZrH1.7 18 pins W 43 pins Figure 8 3.520 51.2 1.45 14.1 37.1 2.63
Case 2 ZrD1.7 18 pins W 43 pins Figure 9 3.520 40.3 1.14 23.6 12.7 0.54
Case 3 ZrH1.7 9 pins ZrD1.7 9 pins W 43 pins Figure 10 3.520 44.4 1.26 17.6 27.8 1.58
Case 4 ZrD1.7 9 pins ZrH1.7 9 pins W 43 pins Figure 11 3.520 45.6 1.30 17.3 27.2 1.57
Case 5 W 61 pins (no moderator) Figure 12 5.010 49.1 0.98 29.1 19.9 0.68