ADOPTED LEVELS, GAMMAS for 166Gd

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 25-JAN-2015 

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-)=3350 keV SYS(n)= 6120 keV SYS(p)= 11130 keV SYQ(α)= -2430 keV SY
Reference: 2012WA38

References:
  A  166Eu β- decay (1.7 S)  B  166Gd IT decay (950 NS)

General Comments:

2005Ic02: production and identification of 166Gd: 15.5 MeV proton-induced fission of 238U; JAERI-ISOL on-line mass separation of products; plastic scin and Ge detectors for x-ray and γ detection

2014Mu09: theoretical calculation of β-decay half-life, and Gamow-Teller strength functions

Q-value: Estimated uncertainties (2012Wa38): 600 for Q(β-), 670 for S(n), 680 for S(p), 630 for Q(α)

Q-value: S(2n)=10900 630, S(2p)=21010 670 (syst,2012Wa38)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0AB 0+ 4.8 s 10 
% β- = 100
     
    70.0 10 AB (2+)       70 1 
  100
[E2]
     0.0
0+
   230.8 11 AB (4+)      160.8 2 
  100
(E2)
    70.0
(2+)
   479.6 11  B (6+)      248.7 3 
  100
(E2)
   230.8
(4+)
  1240.1 11  B (3+)     1009.1 7 
  1169.9 3 
   41 12 
  100 21 


   230.8
    70.0
(4+)
(2+)
  1318.9 11  B (4+)       78 1 
  1088.1 3 
  1249.2 3 
   23 7 
  100 20 
   60 17 
(M1)


  1240.1
   230.8
    70.0
(3+)
(4+)
(2+)
  1350.1 11  B (4+)     1119.3 3 
  1280.1 2 
  100 38 
   38 13 


   230.8
    70.0
(4+)
(2+)
  1418.4 11  B (5+)       99.8 3 
   178.3 2 
   938.6 4 
  1187.5 3 
   67 8 
   31 6 
   42 11 
  100 19 
(M1)
[E2]


  1318.9
  1240.1
   479.6
   230.8
(4+)
(3+)
(6+)
(4+)
  1455.2 11  B (5+)       37S
   105.0 3 
   137 1 
  1224.3 3 
   58 33 
  100 17 
   42 25 
   83 33 
[M1]
(M1(+E2))
(M1(+E2))

  1418.4
  1350.1
  1318.9
   230.8
(5+)
(4+)
(4+)
(4+)
  1601.5 11  B (6-) 950 ns 60 
% IT = 100
   146.3 2 
   183.1 2 
   66 5 
  100
(E1)
(E1)
  1455.2
  1418.4
(5+)
(5+)

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

Jπ(level): As proposed by 2014Pa55 based on systematics of even-even nuclides for low-lying levels and potential-energy surface calculations for higher levels above 1 MeV, supported by multipolarities obtained from intensity balances.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - The g.s. band.
     0.0 0+ 4.8 s 10 
% β- = 100
     
    70.0 10  (2+)       70 1 
  100
[E2]
     0.0
0+
   230.8 11  (4+)      160.8 2 
  100
(E2)
    70.0
(2+)
   479.6 11  (6+)      248.7 3 
  100
(E2)
   230.8
(4+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - γ-vibrational band.
  1240.1 11  (3+)        
  1318.9 11  (4+)       78 1 
  1088.1 3 
  1249.2 3 
   23 7 
  100 20 
   60 17 
(M1)


  1240.1
   230.8
    70.0
(3+)
(4+)
(2+)
  1418.4 11  (5+)       99.8 3 
   178.3 2 
   938.6 4 
  1187.5 3 
   67 8 
   31 6 
   42 11 
  100 19 
(M1)
[E2]


  1318.9
  1240.1
   479.6
   230.8
(4+)
(3+)
(6+)
(4+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - π3/2[411]~#π5/2[413],Kπ=(4+).
  1350.1 11  (4+)        
  1455.2 11  (5+)       37S
   105.0 3 
   137 1 
  1224.3 3 
   58 33 
  100 17 
   42 25 
   83 33 
[M1]
(M1(+E2))
(M1(+E2))

  1418.4
  1350.1
  1318.9
   230.8
(5+)
(4+)
(4+)
(4+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    70.0 (2+)       70 1 [E2]9.7α=9.7 6, α(K)=2.58 8, α(L)=5.5 4, α(M)=1.30 10, α(N)=0.290 21, α(O)=0.038 3, α(P)=0.000132 5
   230.8 (4+)      160.8 2 (E2)0.465α=0.465, α(K)=0.299 5, α(L)=0.1289 20, α(M)=0.0300 5, α(N)=0.00672 10, α(O)=0.000907 14, α(P)=1.630×10-5 24
   479.6 (6+)      248.7 3 (E2)0.1087α=0.1087, α(K)=0.0802 12, α(L)=0.0222 4, α(M)=0.00507 8, α(N)=0.001142 17, α(O)=0.0001597 24, α(P)=4.83×10-6 7
  1318.9 (4+)       78 1 (M1)4.12α=4.12 17, α(K)=3.47 14, α(L)=0.50 2, α(M)=0.109 5, α(N)=0.025 1, α(O)=0.0039 2, α(P)=0.00026 1
  1418.4 (5+)       99.8 3 (M1)2.02α=2.02 4, α(K)=1.71, α(L)=0.247 4, α(M)=0.0537 9, α(N)=0.01235 21, α(O)=0.00191 4, α(P)=12.8×10-5 2
(5+)      178.3 2 [E2]0.327α=0.327, α(K)=0.219 4, α(L)=0.0836 13, α(M)=0.0194 3, α(N)=0.00435 7, α(O)=0.000591 9, α(P)=1.224×10-5 18
  1455.2 (5+)       37[M1]5.7α=5.7 5, α(L)=4.49 7, α(M)=0.976 14, α(N)=0.225 4, α(O)=0.0347 5, α(P)=0.00230 4
(5+)      105.0 3 (M1(+E2))1.93α=1.93 18, α(K)=1.25 23, α(L)=0.5 4, α(M)=0.12 8, α(N)=0.027 17, α(O)=0.0037 21, α(P)=8.E-5 3
(5+)      137 1 (M1(+E2))0.817α=0.817 23, α(K)=0.59 11, α(L)=0.18 8, α(M)=0.041 20, α(N)=0.009 5, α(O)=0.0013 5, α(P)=3.8×10-5 14
  1601.5 (6-) 950 ns 60 
% IT = 100
   146.3 2 (E1)0.1047B(E1)(W.u.)=2.8E-8 3, α=0.1047, α(K)=0.0884 13, α(L)=0.01281 19, α(M)=0.00277 4, α(N)=0.000629 10, α(O)=9.36E-5 14, α(P)=5.20E-6 8
(6-) 950 ns 60 
% IT = 100
   183.1 2 (E1)0.0574B(E1)(W.u.)=2.15E-8 16, α=0.0574, α(K)=0.0486 7, α(L)=0.00692 10, α(M)=0.001497 22, α(N)=0.000341 5, α(O)=5.11E-5 8, α(P)=2.94E-6 5

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 4.8 s 10 
% β- = 100
E(level): The g.s. band.
    70.0(2+)   E(level): The g.s. band.
   230.8(4+)   E(level): The g.s. band.
   479.6(6+)   E(level): The g.s. band.
  1240.1(3+)   E(level): γ-vibrational band.
  1318.9(4+)   E(level): γ-vibrational band.
  1350.1(4+)   E(level): π3/2[411]~#π5/2[413],Kπ=(4+).
  1418.4(5+)   E(level): γ-vibrational band.
  1455.2(5+)   E(level): π3/2[411]~#π5/2[413],Kπ=(4+).
  1601.5(6-) 950 ns 60 
% IT = 100
Configuration=ν5/2[512]~#ν7/2[633], β2=0.291, β4=0.014, β6=-0.017.

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Additional Gamma Comments:

E(level)E(gamma)Comments

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