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. 2003 Mar 3;100(6):3047–3050. doi: 10.1073/pnas.0437778100

Table 2.

For each power level, over-lifetime-of-georeactor production of 3He and 4He, in atoms, time of reactor demise, and over-lifetime-of-georeactor ratios of 3He/4He

3He atoms 4He atoms Demise in years 3He/4He RA
3 TW 1.73  × 1036 2.59  × 1041 5.6  × 109 4.77 RA
5 TW 2.21  × 1036 2.26  × 1041 4.4  × 109 6.99 RA
6 TW 2.39  × 1036 2.14  × 1041 4.0  × 109 7.98 RA