ADOPTED LEVELS, GAMMAS for 214At

Authors: Shaofei Zhu and E. A. Mccutchan |  Citation: Nucl. Data Sheets 175, 1 (2021) |  Cutoff date: 1-May-2021 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=941 keV 10S(n)= 4871 keV 6S(p)= 4015 keV 5Q(α)= 8988 keV 4
Reference: 2021WA16

References:
  A  218Fr α decay (1.1 MS)  B  218Fr α decay (21.9 MS)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB 1- 558 ns 10 
% α = 100
     
    59 9 ?   265 ns 30 
% α < 100
     
    78.0 10 AB (0-)      78
 

     0.0
1-
   145.1 5 AB (2)-     145.1 5 
  100
M1
     0.0
1-
   187.0 9 AB (3-)     187 1 
  100

     0.0
1-
   228.1 12  B (4-)      83 1 
  100

   145.1
(2)-
   231 7  B 9- 760 ns 15 
% α ≤ 100
     
   277.9 10  B (7-)      46 1 
  100

   231
9-
   302.1 15  B (6-)      74 1 
  100

   228.1
(4-)
   304.0 12 A  (1-,2-)     117 1 
  226 2 
  304 4 
  100
   75
  100



   187.0
    78.0
     0.0
(3-)
(0-)
1-
   334.0 14 A      147 1 
  100

   187.0
(3-)
   343.0 10  B (8)-     111 1 
  100
M1
   231
9-
   412 7  B        
   455 8  B        
   495 6 ?A         
   504.1 23  B     276 2 
  100

   228.1
(4-)
   565.1 23  B     337 2 
  100

   228.1
(4-)
   631 12  B        
   728.4 15  B (8-)     451 2 
  496 2 
  100
   50


   277.9
   231
(7-)
9-
   790 6  B        
   864 7  B        
   883 16  B        
   975 9  B        
  1018 7  B        
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  1138 9  B        

E(level): From least square fit to Eγ’s by evaluator, unless otherwised noted as from Eα and Qα.

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   145.1 (2)-     145.1 5 M14.19α=4.19 7, α(K)=3.39 6, α(L)=0.608 10, α(M)=0.1438 25, α(N)=0.0373 6, α(O)=0.00798 14, α(P)=0.001102 19
   343.0 (8)-     111 1 M18.98α=8.98 27, α(K)=7.26 21, α(L)=1.31 4, α(M)=0.310 9, α(N)=0.0804 24, α(O)=0.0172 5, α(P)=0.00238 7

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.01- 558 ns 10 
% α = 100
Only α decay has been observed.
E(level): Only α decay has been observed.
    59 265 ns 30 
% α < 100
Only observed by 1982Ew01, but no evidence found by 1999Sh03.
E(level): Only observed by 1982Ew01, but no evidence found by 1999Sh03.
   187.0(3-)   Jπ(level): Configuration=((π h9/2)+3(ν g9/2)+3); tentative spin assignment.
Jπ(level): Configuration=((π h9/2)+3(ν g9/2)+3); tentative spin assignment.
   228.1(4-)   Jπ(level): Configuration=((π h9/2)+3(ν g9/2)+3); tentative spin assignment.
   2319- 760 ns 15 
% α ≤ 100
%α: only α decay observed, IT decay is possible but not observed.
E(level): %α: only α decay observed, IT decay is possible but not observed. From Eα and Q(α).
   277.9(7-)   Jπ(level): Configuration=((π h9/2)+3(ν g9/2)+3); tentative spin assignment.
   302.1(6-)   Jπ(level): Configuration=((π h9/2)+3(ν g9/2)+3); tentative spin assignment.
   412   E(level): From Eα and Q(α).
   455   E(level): From Eα and Q(α).
   495   E(level): From Eα and Q(α).
   631   E(level): From Eα and Q(α).
   790   E(level): From Eα and Q(α).
   864   E(level): From Eα and Q(α).
   883   E(level): From Eα and Q(α).
   975   E(level): From Eα and Q(α).
  1018   E(level): From Eα and Q(α).
  1138   E(level): From Eα and Q(α).

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