The conversation between human and AI assistant.
Do slow moving neutrons have better penetrating power than fast moving neutrons?
Is there a limit to how slow a neutron can move?
Yes, there is a limit known as the thermal energy of a neutron, which is about 25 millielectronvolts. At this point, the neutron is moving so slowly that it has a high likelihood of being absorbed by a nucleus rather than penetrating through it.