11. Production of heavy transuranic actinides in current thermal-neutron fission reactors through neutron capture and decays. 12. Nuclear fission reactors naturally produce free neutrons; their role is to sustain the energy-producing chain reaction. 13. :: A fission reactor is hardly hypothetical technology, we've had them for half a century now. 14. All current nuclear power plants are critical fission reactors , which are the focus of this article. 15. Several natural nuclear fission reactors were discovered in the uranium mines in the region during 1972. 16. :: : Actually, I believe a car was made that ran off a nuclear fission reactor . 17. I've been reading the articles on fission reactors . 18. A possible explanation therefore was that the uranium ore had operated as a natural fission reactor . 19. The problem of pulling power off a fission reactor is one of radiation containment and explosion avoidance. 20. "' Self Powered Neutron Detector "'( SPND ) is a neutron detector used in nuclear fission reactors .
