ADOPTED LEVELS, GAMMAS for 166Tb

Author: Coral M. Baglin |  Citation: Nucl. Data Sheets 109, 1103 (2008) |  Cutoff date: 1-Mar-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=4.70×103 keV 7S(n)= 5.39×103 keV SYS(p)= 8.7×103 keV SYQ(α)= -1.61×103 keV 10
Reference: 2012WA38

References:
  A  166Gd β- decay 

General Comments:

Production: 238U(p,F) E=15.5 MeV, Gas-jet coupled JAERI-ISOL (1996Ic01,2005Ic02).

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

Q-value: Uncertainty in S(n), S(p), Q(α) is 220, 510 and 310, respectively (2003Au03).









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0.0A (2-) 25.1 s 21 
% β- = 100
    
    40.00 16 A (-)       40.0 2 
  100
     0.0
(2-)
   158.80 16 A      118.8 2 
   158.8 2 
  100 27 
  100 27 
    40.00
     0.0
(-)
(2-)
   694.8 3 A      536.0 2 
  100
   158.80

  1015.50 23 A      975.5 3 
  1015.5 3 
   84 21 
  100
    40.00
     0.0
(-)
(2-)

E(level): From least-squares fit to Eγ.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(2-) 25.1 s 21 
% β- = 100
Jπ(level): The g.s. configuration is likely to Be (π 3/2[411])#(ν 1/2[521]) based on Jπ(g.s.)=3/2+ for neighboring Tb isotopes and Jπ(g.s.)=1/2- for the n=101 isotones 169Er, 171Yb and 173Hf, so Jπ=1- or 2- is expected for 166Tb; log f1ut<8.5 to 2+ and (3-), log ft=6.8 (log f1ut=8.5 3) to 4+.

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Additional Gamma Comments:

E(level)E(gamma)Comments

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