( Transmutation ( ( occurs ( ( every time ) ( ( the nucleus ) ( of ( ( an ( atom changes ) ) ( because ( of ( ( ( ( ( ( ( ( ( ( natural ( radioactive decay ) ) , ) ( nuclear fission ) ) , ) ( nuclear fusion ) ) , ) ( neutron capture ) ) , ) or ) ( numerous ( other processes ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Transmutation)) (VP (VBZ occurs) (S (NP (DT every) (NN time)) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (NP (DT an) (NN atom) (NNS changes)) (PP (RB because) (IN of) (NP (NP (JJ natural) (NN radioactive) (NN decay)) (, ,) (NP (JJ nuclear) (NN fission)) (, ,) (NP (JJ nuclear) (NN fusion)) (, ,) (NP (NN neutron) (NN capture)) (, ,) (CC or) (NP (JJ numerous) (JJ other) (NNS processes))))))))) (. .)))
Transmutation occurs every time the nucleus of an atom changes because of natural radioactive decay, nuclear fission, nuclear fusion, neutron capture, or numerous other processes.
(ROOT (S (NP (DT A) (NN neutron)) (VP (VBZ collides) (PP (IN with) (NP (NP (DT an) (NN atom)) (PP (IN of) (NP (ADJP (JJ u-235) (PP (IN during) (NP (DT the) (JJ basic) (JJ nuclear) (NN fission)))) (NN process)))))) (. .)))
A neutron collides with an atom of u-235 during the basic nuclear fission process.