( ( Gamma radiation ) ( ( ( is often ) ( ( emitted ( from ( ( a nucleus ) ( at ( the ( same time ) ) ) ) ) ) ( as ( ( an ( ( ( alpha or ) beta ) particle ) ) ( allowing ( the ( nucleus ( to ( ( adjust ( its energy ) ) ( to ( a ( lower ( , ( more ( stable level ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Gamma) (NN radiation)) (VP (VBZ is) (ADVP (RB often)) (VP (VBN emitted) (PP (IN from) (NP (NP (DT a) (NN nucleus)) (PP (IN at) (NP (DT the) (JJ same) (NN time))))) (PP (IN as) (NP (NP (DT an) (ADJP (NN alpha) (CC or) (NN beta)) (NN particle)) (VP (VBG allowing) (NP (DT the) (NN nucleus) (S (VP (TO to) (VP (VB adjust) (NP (PRP$ its) (NN energy)) (PP (TO to) (NP (DT a) (JJR lower) (, ,) (RBR more) (JJ stable) (NN level)))))))))))) (. .)))
Gamma radiation is often emitted from a nucleus at the same time as an alpha or beta particle allowing the nucleus to adjust its energy to a lower, more stable level.
(ROOT (S (NP (NN Beta) (NN decay)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT an) (JJ unstable) (NN nucleus)) (VP (VBZ emits) (NP (NP (DT a) (JJ beta) (NN particle)) (CC and) (NP (NN energy))))))) (. .)))