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Discuss the cases at which a leakage of radiation has been detected around the nuclear fission...

Discuss the cases at which a leakage of radiation has been detected around the nuclear fission reactor and why?

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Fukuyama reactor in Japan was pack up within the year 2011 due to radiation leakage. It had been a fission reactor and therefore, the leakage of radiation causes massive radiation contamination in surrounding area. A similar nuclear disaster happened in Chernobyl reactor, Russia in 1986. In all the cases, the reactor core is broken and significant amount of radioactive isotopes are released. A neutron is electrically neutral, and its interaction with matter is weak in order that it can penetrate deeply. Neutrons with thermal energies of about 0.025 eV can cause a fission. Fast neutrons with energy about 2 MeV can't cause fission as these neutrons penetrates through and therefore, the target nucleus can't absorb the neutron.

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