( ( Radioactive ( decay ( ( in which ) ( ( an ( orbital electron ) ) ( is ( captured ( by ( ( the nucleus ) ( of ( the radionuclide ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Radioactive) (NP (NP (NN decay)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (DT an) (JJ orbital) (NN electron)) (VP (VBZ is) (VP (VBN captured) (PP (IN by) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT the) (NN radionuclide))))))))))) (. .)))
Radioactive decay in which an orbital electron is captured by the nucleus of the radionuclide.
(ROOT (S (NP (NP (DT The) (NN electron)) (VP (VBN released) (PP (IN during) (NP (JJ beta) (NN decay))))) (VP (VBZ is) (RB not) (NP (NP (DT an) (JJ orbital) (NN electron)) (PP (CC but) (NP (NP (DT an) (NN electron)) (SBAR (WHNP (WP$ whose) (NNS origin)) (S (VP (VBD was) (PP (IN in) (NP (DT the) (NN nucleus)))))))))) (. .)))