ADOPTED LEVELS, GAMMAS for 217Rn

Authors: E.A. Mccutchan, J. Lee, N. Jovancevic |  Citation: Nucl. Data Sheets 147, 382 (2018) |  Cutoff date: 1-DEC-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-656 keV 8S(n)= 4666 keV 7S(p)= 5887 keV 5Q(α)= 7887.2 keV 29
Reference: 2017WA10

References:
  A  221Ra α decay  B  208Pb(18O,2αnγ)

General Comments:

217Rn evaluated by E.α. McCutchan, J. Lee, and n. Jovancevic

Q-value: S(2n)=11316 9, S(2p)=10378 5 (2017Wa10)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
    0.0AB 9/2+ 0.54 ms 5 
% α = 100
     
   88.89 4 A  (11/2+) ≤ 1.5 ns    88.90 5 
  100
(M1)
    0.0
9/2+
   93.00 4 A  (7/2+) 4.0 ns 4      4.11 8 S
   93.02 5 
 
 

E2(+M1)
   88.89
    0.0
(11/2+)
9/2+
  149.14 3 A  5/2+ ≤ 1.5 ns    56.19 6 
  149.13 3 
    2.5 5 
  100
(M1)
E2
   93.00
    0.0
(7/2+)
9/2+
  174.29 6 A  (7/2,9/2,11/2)+ ≤ 1.5 ns    85.4 3 
  174.29 6 
    0.9 3 
  100 10 

(M1)
   88.89
    0.0
(11/2+)
9/2+
  234.7 3 A  (3/2+)      86.0 5 
  100

  149.14
5/2+
  374.90 19 A      140.3 3 
  225.7 2 
   20 10 
  100 50 


  234.7
  149.14
(3/2+)
5/2+
  382.15 13 A  (5/2+,7/2,9/2+)     207.9 2 
  232.9 3 
  289.1 3 
  382.2 3 
   86 30 
   29 15 
  100 30 
   43 15 




  174.29
  149.14
   93.00
    0.0
(7/2,9/2,11/2)+
5/2+
(7/2+)
9/2+
  474.5 4 A      474.5 4 
  100

    0.0
9/2+
  569.64 16 A      395.2 3 
  420.6 2 
  476.5 4 
   43 15 
  100 30 
   57 22 



  174.29
  149.14
   93.00
(7/2,9/2,11/2)+
5/2+
(7/2+)
  618.8 3 A      444.3 5 
  469.7 5 
  525.8 4 
  100 50 
   75 30 
   75 30 



  174.29
  149.14
   93.00
(7/2,9/2,11/2)+
5/2+
(7/2+)

E(level): From 221Ra α decay.

M(γ): From intensity balance in 221Ra α decay, except where noted.

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   88.89 (11/2+) ≤ 1.5 ns    88.90 5 (M1)3.59α=3.59, α(L)=2.73 4, α(M)=0.649 10, α(N)=0.1693 24, α(O)=0.0370 6, α(P)=0.00541 8
   93.00 (7/2+) 4.0 ns 4     93.02 5 E2(+M1)11.33α=11.33
  149.14 5/2+ ≤ 1.5 ns    56.19 6 (M1)13.71α=13.71, α(L)=10.43 15, α(M)=2.48 4, α(N)=0.646 10, α(O)=0.1414 21, α(P)=0.0206 3
5/2+ ≤ 1.5 ns   149.13 3 E21.577α=1.577, α(K)=0.284 4, α(L)=0.955 14, α(M)=0.257 4, α(N)=0.0668 10, α(O)=0.01354 19, α(P)=0.001527 22
  174.29 (7/2,9/2,11/2)+ ≤ 1.5 ns   174.29 6 (M1)2.71α=2.71, α(K)=2.19 3, α(L)=0.396 6, α(M)=0.0940 14, α(N)=0.0245 4, α(O)=0.00536 8, α(P)=0.000782 11

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   88.89(11/2+) ≤ 1.5 ns T1/2(level): From prompt (α)(ce)(t) data in 221Ra a decay, except where noted.
  149.145/2+ ≤ 1.5 ns T1/2(level): From prompt (α)(ce)(t) data in 221Ra a decay, except where noted.
  174.29(7/2,9/2,11/2)+ ≤ 1.5 ns T1/2(level): From prompt (α)(ce)(t) data in 221Ra a decay, except where noted.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   93.00    4.11E(γ): deduced by evaluators from level energy difference
  149.14  149.13M(γ): from ce measurements in 221Ra α decay

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