ADOPTED LEVELS for 187Po

Author: M. S. Basunia |  Citation: Nucl. Data Sheets 110, 999 (2009) |  Cutoff date: 1-Nov-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 9.33×103 keV 5S(p)= 1.33×103 keV 7Q(α)= 7979 keV 15
Reference: 2012WA38

General Comments:

Production: 144Sm(46Ti,3n), E=224 1 MeV; 96.47% 144Sm enriched target; recoils separated in flight by SHIP velocity filter then implanted into 16-strip Si position-sensitive detector; Time-of-flight veto of beam particles; four-fold segmented Clover Ge detector; measured Eα, Iα, Iγ, recoil-γ coin, recoil-α-γ coin (particle-γ ΔT1/2|<5 μs) (2006An11; see also 2007An19).

Identification: observed 7528α is in prompt coincidence with 286γ in 183Pb and correlated with both known α decays from the g.s. of the 183Pb daughter and also with the known α decays from 179Hg and 175Pt.

Q-value: Note: Current evaluation has used the following Q record





E(level)
(keV)
Jπ(level) T1/2(level)
  0.0 (1/2-,5/2-) 1.40 ms 25 
% α ≈ 100

T1/2(level): From α(t) (2006An11).

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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