ADOPTED LEVELS for 229U

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 109, 2657 (2008) |  Cutoff date: 1-Jun-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-2.57×103 keV 9S(n)= 6083 keV 16S(p)= 5003 keV 8Q(α)= 6475 keV 3
Reference: 2012WA38

General Comments:

Assignment: 232Th(α,7N); parent 229Pa chem; parent 225Ac chem (1951Me10)

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





E(level)
(keV)
Jπ(level) T1/2(level)
   0.0 (3/2+) 58 m 3 
% ε ≈ 80
% α ≈ 20
  15 15   

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   0.0(3/2+) 58 m 3 
% ε ≈ 80
% α ≈ 20
εK/α≈5; value deduced by 1951Me10 from the ratio of the α activity of 231Pa (added tracer) to that of 229Pa (chemically separated from uranium parent). The ratio εK/α of 229Pa was assumed to be 100.
E(level): εK/α≈5; value deduced by 1951Me10 from the ratio of the α activity of 231Pa (added tracer) to that of 229Pa (chemically separated from uranium parent). The ratio εK/α of 229Pa was assumed to be 100.
  15   Q(α)(233Pu)=6420 50 suggests that the observed 6300-keV α from 233Pu feeds either the g.s. or a low-lying level in 229U with E|<30 keV.
E(level): Q(α)(233Pu)=6420 50 suggests that the observed 6300-keV α from 233Pu feeds either the g.s. or a low-lying level in 229U with E|<30 keV.

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