1. Thus, even mass isotopes tend to accumulate, especially in a thermal reactor . 2. With thorium, it is possible to breed using a thermal reactor . 3. In thorium fuel cycle thorium-232 absorbs a neutron in either a fast or thermal reactor . 4. These fast reactors are better suited for the transmutation of other actinides than thermal reactors . 5. A plan to build an advanced thermal reactor was scrapped earlier this year due to high costs. 6. Nuclear-power opponents say that if the advanced thermal reactor is economically unfeasible, the more complex breeder certainly will be. 7. Pu-241 accounts for a significant proportion of fissions in thermal reactor fuel that has been used for some time. 8. About 30 % of the plutonium originally loaded into MOX fuel is consumed by use in a thermal reactor . 9. With the commercialization of nuclear power, the reprocessed plutonium was recycled back into MOX nuclear fuel for thermal reactors . 10. The Advanced Thermal Reactor , or ATR, was envisioned as a transitional model between conventional nuclear reactors and the fast-breeder reactors.
