chain nuclear fission
Thaum lub fissionable nucleus absorbs ib tug neutron thiab fission tshwm sim, tsawg kawg yog ib qho ntawm cov neutrons tso tawm tuaj yeem ua rau cov fission tshiab dua nyob rau nruab nrab, kom cov fission cov tshuaj tiv thaiv tuaj yeem txuas ntxiv los ntawm ib tiam dhau ib tiam.