ADOPTED LEVELS, GAMMAS for 215At

Authors: S.K. Basu, G. Mukherjee, B. Singh, S. Bhattacharya, A. De |  Citation: Nucl. Data Sheets 114, 2023 (2013) |  Cutoff date: 23-SEP-2013 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-87 keV 10S(n)= 5947 keV 8S(p)= 4074 keV 7Q(α)= 8178 keV 4
Reference: 2012WA38

References:
  A  215Po β- decay (1.781 MS)  B  219Fr α decay (20 MS)

General Comments:

215At evaluated by S.K. Basu, γ. Mukherjee, B. Singh, Srijit Bhattacharya, α. De, d. Mondal

Levels: Shell-model configuration assignments are based on predicted level energies, and on those assigned in 214Po and 216Rn (1993Li07).

Q-value: S(2n)=10818 8, S(2p)=10603 8 (2012Wa38)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
    0.0AB 9/2- 0.10 ms 2 
% α = 100
     
  169.88 10  B (7/2)-     169.9 1 
  100
M1+E2
    0.0
9/2-
  352.00 10  B (5/2)-     352.0 1 
  100
E2
    0.0
9/2-
  364.0 10  B (13/2+)        
  472.29 17  B (7/2-)     302.6 3 
  472.2 2 
  ≈12
  100 30 

(M1)
  169.88
    0.0
(7/2)-
9/2-
  517.00 20  B (13/2)-     153?
  517.0 2 
   ≈3
  100 21 
[E1]
E2
  364.0
    0.0
(13/2+)
9/2-
  580 B (3/2-)        

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

M(γ): From K| x ray/Iγ ratios in coincidence with individual α-particle groups (1993Li07).

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
  169.88 (7/2)-     169.9 1 M1+E20.73 162.06α=2.06 19, α(K)=1.50 20, α(L)=0.425 13, α(M)=0.106 5, α(N)=0.0274 12, α(O)=0.00566 19, α(P)=0.000702 10
  352.00 (5/2)-     352.0 1 E2 0.0830α=0.0830, α(K)=0.0479 7, α(L)=0.0262 4, α(M)=0.00679 10, α(N)=0.001756 25, α(O)=0.000354 5, α(P)=4.01×10-5 6
  472.29 (7/2-)     472.2 2 (M1) 0.1613α=0.1613, α(K)=0.1312 19, α(L)=0.0229 4, α(M)=0.00542 8, α(N)=0.001403 20, α(O)=0.000301 5, α(P)=4.16×10-5 6
  517.00 (13/2)-     153[E1] 0.1617α=0.1617, α(K)=0.1290 18, α(L)=0.0249 4, α(M)=0.00591 9, α(N)=0.001513 22, α(O)=0.000312 5, α(P)=3.87×10-5 6
(13/2)-     517.0 2 E2 0.0310α=0.0310, α(K)=0.0214 3, α(L)=0.00725 11, α(M)=0.00183 3, α(N)=0.000473 7, α(O)=9.69×10-5 14, α(P)=1.166E-5 17

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0.09/2- 0.10 ms 2 
% α = 100
E(level): Member of configuration=πh9/23~#νg9/24.
  169.88(7/2)-   E(level): Member of configuration=πh9/22~#πf7/2~#νg9/24.
  352.00(5/2)-   E(level): Member of configuration=πh9/23~#νg9/24.
  364.0(13/2+)   E(level): Member of configuration=πh9/22~#πi13/2~#νg9/24.
  472.29(7/2-)   E(level): Member of configuration=πh9/23~#νg9/24.
  517.00(13/2)-   E(level): Member of configuration=πh9/23~#νg9/24.
  580(3/2-)   E(level): Member of configuration=πh9/23~#νg9/24.

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