ADOPTED LEVELS for 208Ac

Author: M. J. Martin |  Citation: Nucl. Data Sheets 108,1583 (2007) |  Cutoff date: 1-Jun-2007 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-5.91×103 keV 7S(n)= 8.46×103 keV 8S(p)= 7.E1 keV 8Q(α)= 7.73×103 keV 5
Reference: 2012WA38

References:
  A  212Pa α decay 

General Comments:

Assignment: 175Lu(40Ar,7N), E=5.2-5.6 MeV/nucleon. p 204Fr 7031α for 95-ms state, and p 204Fr 7013α for the 25-ms state (1994Le05)

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






E(level)
(keV)
XREFJπ(level) T1/2(level)
    0A (3+) 95 ms +24-16 
% α ≈ 99
% ε ≈ 1
  506 26 A (10-) 25 ms +9-5 
% α ≈ 90
% ε ≈ 10

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0(3+) 95 ms +24-16 
% α ≈ 99
% ε ≈ 1
%ε:from gross β calculations of 1973Ta30.
  506(10-) 25 ms +9-5 
% α ≈ 90
% ε ≈ 10
%ε, %α: gross β calculations of 1973Ta30 give %ε≈1. From an analogy to the E3 decay in 204At, any isomeric decay to the expected 7+ state (see 1994Sc24 and 1992Hu04)is expected to Be<10%.

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