ADOPTED LEVELS for 230Np

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 113, 2113 (2012) |  Cutoff date: 1-May-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.70×103 keV 6S(n)= 6.61×103 keV 10S(p)= 3.26×103 keV 6Q(α)= 6.78×103 keV 5
Reference: 2012WA38

General Comments:

Calculated half-life, Q(α): 2011Sa40

Cluster decay: 22Ne clusters (2011Sh13)

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

Q-value: Q(α)=6778 20 if the observed 6660α feeds the g.s. of 226Pa. Q(α) systematics suggests that 6660α feeds a low-lying level or g.s. of 226Pa.




E(level)
(keV)
T1/2(level)
  0.0 4.6 m 3 
% α ≥ 3
% ε ≤ 97

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0 4.6 m 3 
% α ≥ 3
% ε ≤ 97
%ε+%β+≈97 is obtained if all of the observed 230U is assumed to be formed by ε decay of 230Np following its production in 233U(p,4n). Since 230U could also be produced by 233U(p,p3n), 97% branching for ε decay was given by 1968Ha14 as an upper limit.
E(level): %ε+%β+≈97 is obtained if all of the observed 230U is assumed to be formed by ε decay of 230Np following its production in 233U(p,4n). Since 230U could also be produced by 233U(p,p3n), 97% branching for ε decay was given by 1968Ha14 as an upper limit.

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