61-promethium-154

Atomic Mass: 153.9265470 +- 0.0000791 amu
Excess Mass: -68421.001 +- 73.661 keV
Binding Energy: 1263681.156 +- 73.661 keV
Beta Decay Energy: B- 4044.281 +- 73.601 keV

"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.

Spin: (0,1)
Half life: 1.73 min
Mode of decay: Beta to Sm-154
- Decay energy: 4.050 MeV
Meta state at 0.000 Mev
Spin: (3,4)
Half life: 2.68 min
Mode of decay: Beta to Sm-154
- Decay energy: 4.050 MeV
Possible parent nuclides:
Beta from Nd-154

R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)