11. For instance nitrogen-17 emits two beta-delayed neutrons after its primary beta emission. 12. This concept arises because delayed neutrons are emitted with an energy spectrum more thermalized relative to prompt neutrons. 13. He concentrated on the beta-delayed neutron decay mode, especially the spectroscopy of the emitted neutrons. 14. Where 511 keV is the annihilation and delayed neutron capture provides a clear IBD signature in neutrino detectors. 15. The lower percentage of delayed neutrons makes the use of large percentage of plutonium in nuclear reactors more challenging. 16. The delayed neutrons allow a nuclear reactor to respond several orders of magnitude more slowly than just prompt neutrons would alone. 17. Without delayed neutrons , changes in reaction rates in nuclear reactors would occur at speeds that are too fast for humans to control. 18. This process is the source of so-called delayed neutrons , which play an important role in control of a nuclear reactor. 19. These neutrons, which on average account for less than one percent of the total neutrons released by fission, are called delayed neutrons . 20. In a delayed-critical assembly, the delayed neutrons are needed to make " k-effective " greater than one.
