ADOPTED LEVELS, GAMMAS for 207At

Authors: F.G. Kondev, S. Lalkovski |  Citation: Nucl. Data Sheets 112, 707 (2011) |  Cutoff date: 1-Aug-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-4592 keV 15S(n)= 8869 keV 20S(p)= 2328 keV 13Q(α)= 5872 keV 3
Reference: 2012WA38

References:
  A  204Pb(6Li,3nγ)  B  207Rn ε decay
  C  211Fr α decay 








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0ABC 9/2- 1.81 h 3 
% ε = 91.4 10
% α = 8.6 10
     
    344.55 4 ABC 7/2-      344.53 5 
   100
E2+M1
      0
9/2-
    643.36 18 ABC 11/2-      643.4 2 
   100 7 
M1+E2
      0
9/2-
    673.98 4  B  (5/2)-      329.45 5 
   674.00 5 
    37 4 
   100
(M1)
E2
    344.55
      0
7/2-
9/2-
    686.40 23 A C 13/2-      686.3 3 
   100 20 
E2
      0
9/2-
    747.19 5  B  7/2-      402.68 5 
   747.15 7 
    84 8 
   100 10 
M1
M1+E2
    344.55
      0
7/2-
9/2-
    973.28 8  B       628.6 1 
   973.35 13 
    44 9 
   100 18 


    344.55
      0
7/2-
9/2-
    976.09 10  B       631.6 1 
   100 9 

    344.55
7/2-
   1018.57 6  B  3/2-,5/2,7/2      344.53 5 ?
   674.00 5 
 
  ≈100

E1,E2
    673.98
    344.55
(5/2)-
7/2-
   1042.10 10  B  3/2-,5/2,7/2      697.5 1 
   100

    344.55
7/2-
   1055.4 3 A   13/2-      369.0 3 
   412.1 3 
   100 8 
    92 8 
M1+E2
M1+E2
    686.40
    643.36
13/2-
11/2-
   1084.7 3 A   15/2-       29.3S
   398.3 3 
   441.4 3 
 
    32 3 
   100 9 

M1+E2
E2
   1055.4
    686.40
    643.36
13/2-
13/2-
11/2-
   1108.27 15  B       361.0 4 
   763.4 7 
   100 45 
    91 32 


    747.19
    344.55
7/2-
7/2-
   1114.78 7 ? B  7/2-      367.60 5 ?
   471.4 7 ?
   100 11 
     8.0 22 
M1

    747.19
    643.36
7/2-
11/2-
   1115.8 4 A   (13/2)      472.4 3 
   100 11 
D
    643.36
11/2-
   1119.95 8  B       446.1 1 
   775.30 9 
    24 5 
   100 13 


    673.98
    344.55
(5/2)-
7/2-
   1197.95 10  B       524.2 3 
   853.4 1 
    10 5 
   100 20 


    673.98
    344.55
(5/2)-
7/2-
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   1224.76 16  B       477.8 5 
   879.9 7 
  1224.8 2 
    60 13 
    31 12 
   100 23 



    747.19
    344.55
      0
7/2-
7/2-
9/2-
   1233.9 3 A   17/2-      149.3 3 
   547.4 3 
    45 5 
   100 10 
M1+E2
E2
   1084.7
    686.40
15/2-
13/2-
   1284.13 15  B       308.0 4 
   537.6 5 
   610.1 2 
   939.4 3 
    44 10 
    74 21 
   100 20 
    90 29 




    976.09
    747.19
    673.98
    344.55

7/2-
(5/2)-
7/2-
   1351.17 14  B       242.9 4 
   377.9 2 
   604.0 4 
    23 7 
   100 20 
    29 7 



   1108.27
    973.28
    747.19


7/2-
   1495.5 5 A   21/2-      261.6 3 
   100 21 
E2
   1233.9
17/2-
   1534.80 16  B       559.2 4 
   561.1 2 
   788.1 4 
   861.4 4 
  1190.4 5 
    59 14 
   100 21 
    59 17 
    41 15 
    64 26 





    976.09
    973.28
    747.19
    673.98
    344.55


7/2-
(5/2)-
7/2-
   1539.36 13  B       188.0 3 
   520.2 3 
   566.3 2 
   792.3 4 
   865.4 4 
  1539.5 7 
    43 8 
    23 12 
    49 15 
    29 8 
    38 18 
   100 38 






   1351.17
   1018.57
    973.28
    747.19
    673.98
      0

3/2-,5/2,7/2

7/2-
(5/2)-
9/2-
   1553.55 20  B       535.2 5 
   580.1 3 
   806.1 5 
   879.9 7 
   100 26 
    97 26 
    79 29 
    51 19 




   1018.57
    973.28
    747.19
    673.98
3/2-,5/2,7/2

7/2-
(5/2)-
   1631.5 5 A   (15/2)      515.7 3 
   100 12 
M1+E2
   1115.8
(13/2)
   1799.44 19  B       245.7 4 
   691.5 5 
   780.9 4 
   823.3 4 
  1799.6 8 
    77 18 
    59 23 
   ≈34
   100 36 
 





   1553.55
   1108.27
   1018.57
    976.09
      0


3/2-,5/2,7/2

9/2-
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   1823.23 25  B       471.4 7 
   599.0 4 
   780.9 4 
   804.3 7 
  1478.8 7 
    85 23 
   100 35 
   ≈29
    85 38 
 





   1351.17
   1224.76
   1042.10
   1018.57
    344.55


3/2-,5/2,7/2
3/2-,5/2,7/2
7/2-
   1841.27 15  B       616.2 4 
   643.4 2 
   798.9 3 
   865.4 4 
    18 4 
   100 19 
    18 5 
    19 9 




   1224.76
   1197.95
   1042.10
    976.09


3/2-,5/2,7/2

   1897.7 6 A   23/2-      402.2 3 
   100 11 
M1+E2
   1495.5
21/2-
   1966.58 17  B       768.6 3 
   947.9 4 
   990.7 3 
   993.2 3 
    56 18 
    59 18 
    67 23 
   100 27 




   1197.95
   1018.57
    976.09
    973.28

3/2-,5/2,7/2


  ≈1971?A        339.5?
   100

   1631.5
(15/2)
   2038.63 22  B       485.0 6 
   687.5 2 
   754.2 6 
   923.2 6 ?
    67 11 
   100 29 
    42 10 
    20 10 




   1553.55
   1351.17
   1284.13
   1114.78



7/2-
   2117.3 6 A   25/2+ 108 ns 2     219.6 3 
   100
E1
   1897.7
23/2-
   2149.53 17  B       308.0 4 
   350.1 3 
   610.1 2 
   951.8 4 
  1176.3 6 
  1806.1 8 
    31 7 
   100 25 
    70 14 
    67 25 
 
 






   1841.27
   1799.44
   1539.36
   1197.95
    973.28
    344.55





7/2-

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

Jπ(level): From deduced transition multipolarities using γ(θ) in 204Pb(6Li,3nγ), unless otherwise specified

M(γ): From γ(θ) in 204Pb(6Li,3nγ), unless otherwise specified

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
    344.55 7/2-      344.53 5 E2+M13.1 +19-70.115α=0.115 17, α(K)=0.074 15, α(L)=0.0308 15, α(M)=0.0079 4, α(N)=0.00203 9, α(O)=0.000414 19, α(P)=4.8×10-5 4, α(N+)=0.00249 11
    643.36 11/2-      643.4 2 M1+E2 0.05α=0.05 3, α(K)=0.036 22, α(L)=0.007 4, α(M)=0.0017 7, α(N)=0.00043 19, α(O)=9.E-5 4, α(P)=1.2E-5 6, α(N+)=0.00053 23
    673.98 (5/2)-      329.45 5 (M1) 0.426α=0.426, α(K)=0.346 5, α(L)=0.0611 9, α(M)=0.01444 21, α(N)=0.00374 6, α(O)=0.000801 12, α(P)=0.0001106 16, α(N+)=0.00465 7
(5/2)-      674.00 5 E2 0.01716α=0.01716, α(K)=0.01270 18, α(L)=0.00337 5, α(M)=0.000833 12, α(N)=0.000215 3, α(O)=4.47×10-5 7, α(P)=5.59E-6 8, α(N+)=0.000266 4
    686.40 13/2-      686.3 3 E2 0.01652α=0.01652, α(K)=0.01226 18, α(L)=0.00321 5, α(M)=0.000792 12, α(N)=0.000205 3, α(O)=4.25×10-5 6, α(P)=5.33E-6 8, α(N+)=0.000253 4
    747.19 7/2-      402.68 5 M1 0.247α=0.247, α(K)=0.201 3, α(L)=0.0353 5, α(M)=0.00834 12, α(N)=0.00216 3, α(O)=0.000463 7, α(P)=6.39×10-5 9, α(N+)=0.00269 4
7/2-      747.15 7 M1+E20.8 40.035α=0.035 9, α(K)=0.028 8, α(L)=0.0051 11, α(M)=0.00122 25, α(N)=0.00032 7, α(O)=6.7×10-5 14, α(P)=9.1E-6 20, α(N+)=0.00039 8
   1055.4 13/2-      369.0 3 M1+E2 0.19α=0.19 12, α(K)=0.15 11, α(L)=0.033 12, α(M)=0.0081 25, α(N)=0.0021 7, α(O)=0.00044 15, α(P)=5.8×10-5 24, α(N+)=0.0026 8
13/2-      412.1 3 M1+E2 0.14α=0.14 9, α(K)=0.11 8, α(L)=0.024 9, α(M)=0.0058 20, α(N)=0.0015 6, α(O)=0.00032 12, α(P)=4.2×10-5 19, α(N+)=0.0019 7
   1084.7 15/2-      398.3 3 M1+E2 0.16α=0.16 10, α(K)=0.12 9, α(L)=0.027 10, α(M)=0.0065 22, α(N)=0.0017 6, α(O)=0.00035 13, α(P)=4.6×10-5 20, α(N+)=0.0021 7
15/2-      441.4 3 E2 0.0456α=0.0456, α(K)=0.0296 5, α(L)=0.01200 17, α(M)=0.00306 5, α(N)=0.000791 12, α(O)=0.0001611 23, α(P)=1.89×10-5 3, α(N+)=0.000971 14
   1114.78 7/2-      367.60 5 M1 0.316α=0.316, α(K)=0.257 4, α(L)=0.0452 7, α(M)=0.01069 15, α(N)=0.00277 4, α(O)=0.000593 9, α(P)=8.19×10-5 12, α(N+)=0.00344 5
   1233.9 17/2-      149.3 3 M1+E2 2.7α=2.7 12, α(K)=1.7 15, α(L)=0.72 16, α(M)=0.18 6, α(N)=0.047 14, α(O)=0.0096 23, α(P)=0.00112 11, α(N+)=0.058 16
17/2-      547.4 3 E2 0.0272α=0.0272, α(K)=0.0191 3, α(L)=0.00610 9, α(M)=0.001531 22, α(N)=0.000396 6, α(O)=8.14×10-5 12, α(P)=9.87E-6 14, α(N+)=0.000487 7
   1495.5 21/2-      261.6 3 E2 0.201α=0.201, α(K)=0.0921 14, α(L)=0.0811 12, α(M)=0.0213 4, α(N)=0.00551 9, α(O)=0.001100 17, α(P)=0.0001193 18, α(N+)=0.00673 10
   1631.5 (15/2)      515.7 3 M1+E2 0.08α=0.08 5, α(K)=0.06 5, α(L)=0.013 6, α(M)=0.0031 13, α(N)=0.0008 4, α(O)=0.00017 7, α(P)=2.2×10-5 11, α(N+)=0.0010 4
   1897.7 23/2-      402.2 3 M1+E2 0.15α=0.15 10, α(K)=0.12 9, α(L)=0.026 10, α(M)=0.0063 21, α(N)=0.0016 6, α(O)=0.00034 13, α(P)=4.5×10-5 20, α(N+)=0.0020 7
   2117.3 25/2+ 108 ns 2     219.6 3 E1 0.0671B(E1)(W.u.)=1.58E-7 3, α=0.0671, α(K)=0.0541 8, α(L)=0.00988 15, α(M)=0.00234 4, α(N)=0.000600 9, α(O)=0.0001247 18, α(P)=1.589E-5 23, α(N+)=0.000740 11

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      09/2- 1.81 h 3 
% ε = 91.4 10
% α = 8.6 10
Eα=5758 keV 3, weighted average of 5752 keV 8 (1963Ho18) and 5759 keV 3 (1969Go23); This value is recommended also by 1991Ry01. The measured 207At α-decay anisotropies of A2=0.153 5, A4=-0.037 6 (1997Sc26 and 1996Sc35) yield a L=2/L=0 mixing ratio of 0.077 3 and a L=4/L=0 mixing ratio of -0.023 4. Hence the decay is interpreted as J to J (L=0) with a L=2 component of 0.17%.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    344.55    344.53E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
M(γ): α(K)exp=0.075 in 207Rn ε decay; A2=0.00 3 A4=-0.09 5 in 204Pb(6Li,3nγ). From α(K)exp in 207Rn ε decay
    643.36    643.4E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
M(γ): A2=-0.60 3 A4=-0.02 3 in 204Pb(6Li,3nγ)
    673.98    329.45E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
M(γ): Assigned M1 in 207Rn ε decay (1975ZeZY), but α(K)exp was not given by the authors. From α(K)exp in 207Rn ε decay
    674.00E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
M(γ): α(K)exp=0.012 in 207Rn ε decay. From α(K)exp in 207Rn ε decay
    686.40    686.3M(γ): A2=0.24 9 A4=-0.1 1
    747.19    402.68E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
M(γ): α(K)exp=0.24 in 207Rn ε decay. From α(K)exp in 207Rn ε decay
    747.15E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
M(γ): α(K)exp=0.029 in 207Rn ε decay. From α(K)exp in 207Rn ε decay
    973.28    628.6E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    973.35E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    976.09    631.6E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1018.57    344.53E(γ): From 207Rn ε decay. Multiply placed
    674.00E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
M(γ): α(K)exp=0.012 in 207Rn ε decay. From α(K)exp in 207Rn ε decay
   1042.10    697.5E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1055.4    369.0M(γ): A2=0.1 1 in 204Pb(6Li,3nγ)
    412.1M(γ): A2=-0.68 5 in 204Pb(6Li,3nγ)
   1084.7     29.3E(γ): Transition not observed. Its existence is suggested by the 108-ns component observed for the 412γ in 204Pb(6Li,3nγ). Eγ is from the E(level) difference
    398.3M(γ): A2=-0.55 5 in 204Pb(6Li,3nγ)
    441.4M(γ): A2=0.21 3 A4=-0.09 6 in 204Pb(6Li,3nγ)
   1108.27    361.0E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    763.4E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1114.78    367.60E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
M(γ): α(K)exp=0.29 in 207Rn ε decay. From α(K)exp in 207Rn ε decay
    471.4E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
   1115.8    472.4M(γ): A2=-0.17 5 in 204Pb(6Li,3nγ)
   1119.95    446.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    775.30E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
E(level)E(gamma)Comments
   1197.95    524.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    853.4E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1224.76    477.8E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    879.9E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
   1224.8E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1233.9    149.3M(γ): A2=-0.33 8 in 204Pb(6Li,3nγ)
    547.4M(γ): A2=0.27 4 A4=-0.06 6 in 204Pb(6Li,3nγ)
   1284.13    308.0E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    537.6E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    610.1E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    939.4E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1351.17    242.9E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    377.9E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    604.0E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1495.5    261.6M(γ): A2=0.2 1 A4=-0.1 1 in 204Pb(6Li,3nγ)
   1534.80    559.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    561.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    788.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    861.4E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1190.4E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1539.36    188.0E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    520.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    566.3E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    792.3E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    865.4E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
   1539.5E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
E(level)E(gamma)Comments
   1553.55    535.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    580.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    806.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    879.9E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
   1631.5    515.7M(γ): A2=-0.59 5 A4=-0.11 8 in 204Pb(6Li,3nγ)
   1799.44    245.7E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    691.5E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    780.9E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    823.3E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1799.6E(γ): From 207Rn ε decay
   1823.23    471.4E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    599.0E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    780.9E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
   1478.8E(γ): From 207Rn ε decay
   1841.27    643.4E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
    865.4E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   1897.7    402.2M(γ): A2=-0.19 3 and α(exp) deduced from an intensity balance in the 108-ns delayed spectrum in 204Pb(6Li,3nγ)
   1966.58    768.6E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    947.9E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    990.7E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    993.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   2038.63    485.0E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    687.5E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    754.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    923.2E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
E(level)E(gamma)Comments
   2117.3    219.6M(γ): A2=-0.11 7 A4=0.1 1 and α(exp) deduced from an intensity balance in the 108-ns delayed spectrum in 204Pb(6Li,3nγ)
   2149.53    308.0E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    350.1E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
    610.1E(γ): Multiply placed with undivided intensity. From 207Rn ε decay
I(γ): Multiply placed with undivided intensity. From 207Rn ε decay
    951.8E(γ): From 207Rn ε decay
I(γ): From 207Rn ε decay
   1176.3E(γ): From 207Rn ε decay
   1806.1E(γ): From 207Rn ε decay

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