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Cuadro de texto:   -  Atomic Mass: 237.0481673 ± 0.0000021 amu -  Excess Mass: 44867.501 ± 1.961 keV -  Binding Energy: 1795277.138 ± 1.986 keV -  Beta Decay Energy: B- -220.318 ± 1.298 keV -  Spin: 5/2+ -  Half life: 2144000 years -  Mode of decay: Alpha to Pa-233 º  Decay energy: 4.959 MeV -  Mode of decay: SF º  Branch ratio: <=2E-10 % -  Meta state at 2.800 Mev -  Half life: 45 ns -  Mode of decay: SF º  Branch ratio: <=100.0 % º  Decay energy: 0 0.000 MeV -  Possible parent nuclides:                                                                Beta from U-237                                                                Electron capture from Pu-237                                                                Alpha from Am-241