131
59
Pr
element 		Information about Praseodymium-131:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:130.920060±0.000471amu
    Excess Mass (Δ):-74.463390±0.438802MeV
    Binding Energy:1085.647827±0.438802MeV
    β- Decay Energy:-6.560000±0.150000MeV
"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.
Radioactive Decay Data:

  • Spin: (3/2+)
  • Half life: 1.53 min ( 91.8 sec., λ = 0.00755062 s-1)
  • Mode of decay:
    E.C.
     to
    131
    58
    Ce
       (Q = 5.250 MeV)
    Meta state at 0.152 Mev
  • Spin: 11/2-) 1.53
  • Half life: 5.7 s ( 5.7 sec., λ = 0.121605 s-1)
  • Mode of decay: γ (IT)  (Q = 0.152 MeV)   Branch ratio: 95.00 %
  • Mode of decay:
    E.C.
     to
    131
    58
    Ce
       (Q = 5.402 MeV)   Branch ratio: 5.00 %

  • Possible parent nuclides:
    E.C. from
    131
    60
    Nd
    E.C. +
    1
    1
    p+ from
    132
    61
    Pm
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)