That is extraordinarily high. Let's also assume that all thousand 1 GeV gammas are absorbed in your body. In reality most would pass right through you. So the deposit energy is equal to 1000 GeV. In other units that is 1.6 E-7 Joules. Radiation exposure is measured in Gray, which is 1 Joule per kilogram. read more
The danger from radiation depends on its energy, so let’s assume some very high energy radiation, 1 GeV gammas. That is extraordinarily high. Let’s also assume that all thousand 1 GeV gammas are absorbed in your body. read more
Neutron radiation is generated by the fission process, which can release neutrons as a product of fission, and by radioactive decay. Neutrons will have a spectrum of energies depending on the fission process involved, or the radionuclide emitting the neutron, and the neutron’s interactions with other particles between emission and measurement. read more