Cuadro de texto:   -  Atomic Mass: 231.0362971 ± 0.0000022 amu -  Excess Mass: 33810.488 ± 2.023 keV -  Binding Energy: 1760253.274 ± 2.047 keV -  Beta Decay Energy: B- 389.515 ± 1.685 keV -  Spin: 5/2+ -  Half life: 25.52 h -  Mode of decay: Beta to Pa-231 º  Decay energy: 0.389 MeV -  Mode of decay: Alpha to Ra-227 º  Branch ratio: ~1.0E-8 % º  Decay energy: 4.213 MeV -  Possible parent nuclides:                                                                Beta from Ac-231                                                                Alpha from U-235

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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