ADOPTED LEVELS, GAMMAS for 137Ba

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 108,2173 (2007) |  Cutoff date: 1-Oct-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-580.5 keV 17S(n)= 6905.63 keV 7S(p)= 8671.5 keV 19Q(α)= -2502.8 keV 25
Reference: 2012WA38

References:
  A  137Cs β- decay  B  137Ba IT decay (2.552 M)
  C  137La ε decay  D  136Xe(α,3nγ)
  E  136Ba(n,γ) E=THERMAL  F  136Ba(d,p)
  G  137Ba(γ,γ’)  H  137Ba(n,n’γ)
  I  Coulomb Excitation  J  138Ba(p,d)

General Comments:

Others:

Isomeric yield: 138Ba(γ,n) (1995Ma78,1996Be32), 139La(n,t) (1994Hu19), 138Ba(n,2n) (1994Gr35);

Isotope shift: 1993Vi10

2006AnZZ: Measured relative excitation of isomer and gs via deexcitation of giant dipole resonance excited in 138Ba(γ,n). Other: 2005AnZX

Q-value: Note: Current evaluation has used the following Q record -621 136905.61 88671.5 19 2003Au03










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCDEFGHIJ 3/2+ STABLE      
   283.54 4 A   EF HIJ 1/2+      283.53 4 
  100

     0.0
3/2+
   661.659 3 AB DEFGH J 11/2- 2.552 m 1 
% IT = 100
   661.657 3 
  100
M4
     0.0
3/2+
   907 10 ?     F            
  1044 10 ?     F            
  1251.82 8    DE  HI  7/2+ 0.354 ps 24    1251.81 8 
  100
E2
     0.0
3/2+
  1293.90 8     EF HIJ 5/2+     1293.90 8 
  100
M1+E2
     0.0
3/2+
  1463.8 6     EFGH J 3/2+     1180.6
  1463.91
    5
  100
D

   283.54
     0.0
1/2+
3/2+
  1481.8 4     E GH   (3/2+,5/2+)      230.0 4 
  1198.33
  1481.66
 
   67
  100



  1251.82
   283.54
     0.0
7/2+
1/2+
3/2+
  1797.67 17     EF H   7/2-      504.0
  1136.69
    1.0
  100

E2
  1293.90
   661.659
5/2+
11/2-
  1837.6 7     EFGH J 1/2+     1553.64
  1838.0
  100
   45


   283.54
     0.0
1/2+
3/2+
  1857 10 ?     F     (1/2+)        
  1892.0 10       G        1892
 

     0.0
3/2+
  1899.4 4     EFGH J 3/2+     1615.8
  1899.0
   85
  100

D
   283.54
     0.0
1/2+
3/2+
  1907.52 20     EFGH J 3/2+     1623.32
  1908.0
  100 11 
   89 24 


   283.54
     0.0
1/2+
3/2+
  2041.4 6     EFGH J (5/2)+      578.0
   747.43
  2041.1
   12
   40
  100



  1463.8
  1293.90
     0.0
3/2+
5/2+
3/2+
  2047.4 3    D           1385.7 3 
  100

   661.659
11/2-
  2117.0 10       G        2117
  100

     0.0
3/2+
  2182.22 5     EF     3/2-      384.59 17 
  1898.70 5 
  2182.23 9 
    0.82 14 
  100.0 9 
    2.5 2 



  1797.67
   283.54
     0.0
7/2-
1/2+
3/2+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2228.9 4        H J 7/2+      747.5
   766.1?
   934.9
   976.8
   89
  100
   33
 




  1481.8
  1463.8
  1293.90
  1251.82
(3/2+,5/2+)
3/2+
5/2+
7/2+
  2229.5 4    D   H   (13/2-)      182.0 3 
  1568.3
    1.5 5 
  100 11 

D
  2047.4
   661.659

11/2-
  2271.0 4     EF H   (3/2+,5/2)      371.3
   976.8
  1019.0
  2271.4
   17.5
  100
   37.5
   95




  1899.4
  1293.90
  1251.82
     0.0
3/2+
5/2+
7/2+
3/2+
  2311.0 10       G        2311
  100

     0.0
3/2+
  2340 20          J 7/2+,9/2+        
  2344.0 10       G        2344
  100

     0.0
3/2+
  2349.1 5    D       (17/2-) 0.59 µs 10     120.2 3 
  100
E2
  2229.5
(13/2-)
  2355.6 4     E      1/2,3/2     2072.6 6 
  2355.4 4 
  100 16 
   52 16 


   283.54
     0.0
1/2+
3/2+
  2373.0 10       G        2373
  100

     0.0
3/2+
  2407.8 5    D            178.9 3 
  100

  2229.5
(13/2-)
  2427.0 10       G        2427
  100

     0.0
3/2+
  2438.8 3 ?   D           1777.1 3 
  100

   661.659
11/2-
  2529.6 6        H J 7/2+      622.2
   731.1
  1067.8?
  1236.4
  1868.8?
   51
   71
   33
  100
 





  1907.52
  1797.67
  1463.8
  1293.90
   661.659
3/2+
7/2-
3/2+
5/2+
11/2-
  2571.0 10       G        2571
  100

     0.0
3/2+
  2590.1 4    D            151.3 3 
   361.1 3 
  100 10 
   80 8 


  2438.8
  2229.5

(13/2-)
  2623.8 6    D       (19/2) ≤ 30 ns    274.7 3 
  100
D
  2349.1
(17/2-)
  2653.0 10       G        2653
  100

     0.0
3/2+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2662.72 5     EF   J 1/2-      480.61 7 
   755.24 21 
   763.4 4 
  2379.07 7 
  2662.68 7 
   87 3 
    5.3 5 
    1.4 5 
   70 3 
  100 3 





  2182.22
  1907.52
  1899.4
   283.54
     0.0
3/2-
3/2+
3/2+
1/2+
3/2+
  2709.0 10      FG        2709
 

     0.0
3/2+
  2750 30          J        
  2810 20 ?     F     (5/2-,7/2-)        
  2848 20      F     5/2-,7/2-        
  2873.8 11     EF H J (5/2)-     1076.1
  1623.1?
 
 


  1797.67
  1251.82
7/2-
7/2+
  2905.0 10      FG  J 5/2-,7/2-     2905
 

     0.0
3/2+
  2954.0 10       G        2954
  100

     0.0
3/2+
  2964.9 4     E      1/2,3/2     1057.4 12 
  2964.9 4 
   10 4 
  100 15 


  1907.52
     0.0
3/2+
3/2+
  2990 30          J 7/2+,9/2+        
  3008 20      F            
  3037.0 10 ?     FG        3037
 

     0.0
3/2+
  3074.0 10       G        3074
 

     0.0
3/2+
  3086.1 4     E      1/2,3/2     2800.9 6 
  3086.9 7 
  100
   52


   283.54
     0.0
1/2+
3/2+
  3094.0 10       G        3094
 

     0.0
3/2+
  3127.42 12     E    J 1/2,3/2      945
  2843.80 19 
  3127.41 14 
   12
   56 7 
  100 7 



  2182.22
   283.54
     0.0
3/2-
1/2+
3/2+
  3140.0 10       G        3140
 

     0.0
3/2+
  3141 20      F     (9/2)-        
  3179.4 7    D            555.6 3 
  100

  2623.8
(19/2)
  3221.0 10     E    J 1/2,3/2     3221
  100

     0.0
3/2+
  3228 20      F     5/2-,7/2-        
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3244.0 7    D            620.2 3 
  100

  2623.8
(19/2)
  3251.0 10 ?     FG        3251
 

     0.0
3/2+
  3279.0 10 ?      G        3279
 

     0.0
3/2+
  3316.53 15     EF     1/2-,3/2-      230.0 4 
  1134
  1416
  3033.06 15 
  3316
   24 4 
    8
    9
  100 5 
    5





  3086.1
  2182.22
  1899.4
   283.54
     0.0
1/2,3/2
3/2-
3/2+
1/2+
3/2+
  3332.0 10 ?     FG    (5/2)-     3332
 

     0.0
3/2+
  3383.0 10 ?      G        3383
 

     0.0
3/2+
  3402.54 11     EF     3/2-     1220
  2107.6 9 
  3118.95 11 
  3402
    5.5
   11 3 
  100 6 
    5.5




  2182.22
  1293.90
   283.54
     0.0
3/2-
5/2+
1/2+
3/2+
  3420 20 ?         J        
  3453.0 10 ?      G        3453
 

     0.0
3/2+
  3473.0 10 ?      G        3473
 

     0.0
3/2+
  3496 20 ?     F     5/2-,7/2-        
  3525.0 10 ?      G        3525
 

     0.0
3/2+
  3550         J 7/2+,9/2+        
  3563.0 10 ?      G        3563
 

     0.0
3/2+
  3591 20 ?     F     5/2-,7/2-        
  3606.1 10 ?    EF         3606
  100

     0.0
3/2+
  3640.1 10 ?     FG    5/2-,7/2-     3640
 

     0.0
3/2+
  3680.80 17     EF     1/2-,3/2-     1781?
  2198.3 12 
  3397.25 17 
  3680
   13
   18 7 
  100 6 
   12




  1899.4
  1481.8
   283.54
     0.0
3/2+
(3/2+,5/2+)
1/2+
3/2+
  3703.1 10 ?     FG    5/2-,7/2-     3703
 

     0.0
3/2+
  3720.9 4 ?    EF     1/2,3/2     1057.4 12 
  3437.4 4 
  3721
   33 14 
  100 19 
   86



  2662.72
   283.54
     0.0
1/2-
1/2+
3/2+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3761.1 10 ?      G        3761
 

     0.0
3/2+
  3778.1 10 ?     FG        3778
 

     0.0
3/2+
  3798.89 24     EFG    (1/2-,3/2-)     1527.9 4 
  3515.2 3 
  3798.9 5 
   69 13 
  100 13 
   67 13 



  2271.0
   283.54
     0.0
(3/2+,5/2)
1/2+
3/2+
  3822.1 10 ?      G        3822
 

     0.0
3/2+
  3827 20 ?     F     5/2-,7/2-        
  3846.1 10 ?      G        3846
 

     0.0
3/2+
  3850.3 7     E G    1/2,3/2     3567
  3850
 
 


   283.54
     0.0
1/2+
3/2+
  3857.1 10     E G    1/2,3/2     3857
  100

     0.0
3/2+
  3894.1 10 ?      G        3894
 

     0.0
3/2+
  3940.1 10 ?      G        3940
 

     0.0
3/2+
  3963.1 10     E      1/2,3/2     3963
  100

     0.0
3/2+
  3977.1 10     E      1/2,3/2     3977
  100

     0.0
3/2+
  3981.1 10 ?      G        3981
 

     0.0
3/2+
  4149.97 18     E      1/2+,3/2      747.36 16 
  2856.6 5 
  3866
  4150.3 6 
   48 11 
   67 26 
   63
  100 33 




  3402.54
  1293.90
   283.54
     0.0
3/2-
5/2+
1/2+
3/2+
  4206.1 10     E      1/2,3/2     4206
 

     0.0
3/2+
  4216.10 15     E      1/2,3/2     1553.39 14 
  4215
  100
   30


  2662.72
     0.0
1/2-
3/2+
  4550.7 7     E      1/2,3/2     3086.9 7 
  4267
   85
  100


  1463.8
   283.54
3/2+
1/2+
  4594.9 7     E      1/2,3/2      794.3 13 
  4312
  4595
   43
   78
  100



  3798.89
   283.54
     0.0
(1/2-,3/2-)
1/2+
3/2+
  4764.4 5     E      1/2,3/2     2856.6 5 
  4482
   82
  100


  1907.52
   283.54
3/2+
1/2+

E(level): E(level) for levels seen in (n,γ) or (n,n’γ) are from 1995Bo03

Jπ(level): Levels fed in primary transition from 1/2+ capture state in (n,γ) are assumed to be 1/2,3/2, unless stated otherwise. J|<9/2 are mostly from L and S in (d,p) and (p,d); J|>13/2 are from γ(θ) in (α,3nγ), unless given otherwise. J populated via (γ,γ’)|<5/2 or 7/2+

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   661.659 11/2- 2.552 m 1 
% IT = 100
   661.657 3 M40.1124B(M4)(W.u.)=2.719 9, α=0.1124, α(K)=0.0915 13, α(L)=0.01648 23, α(M)=0.00352 5, α(N)=0.000759 11, α(O)=0.0001134 16, α(P)=7.21×10-6 11, α(N+)=0.000879 13
  1251.82 7/2+ 0.354 ps 24    1251.81 8 E21.14×10-3B(E2)(W.u.)=12.5 11, α=1.14E-3, α(K)=0.000974 14, α(L)=0.0001245 18, α(M)=2.56E-5 4, α(N)=5.51E-6 8, α(O)=8.41E-7 12, α(P)=6.06E-8 9, α(N+)=1.98E-5 3
  1293.90 5/2+     1293.90 8 M1+E20.00124α=0.00124 17, α(K)=0.00106 15, α(L)=0.000133 17, α(M)=2.7×10-5 4, α(N)=5.9E-6 8, α(O)=9.0E-7 12, α(P)=6.7E-8 10, α(N+)=2.70E-5 7
  1797.67 7/2-     1136.69E21.38×10-3α=1.38×10-3, α(K)=0.001187 17, α(L)=0.0001532 22, α(M)=3.15E-5 5, α(N)=6.77E-6 10, α(O)=1.033E-6 15, α(P)=7.37E-8 11, α(N+)=9.25E-6 13
  2349.1 (17/2-) 0.59 µs 10     120.2 3 E21.004α=1.004 17, α(K)=0.687 11, α(L)=0.250 5, α(M)=0.0545 10, α(N)=0.01134 21, α(O)=0.00152 3, α(P)=3.28×10-5 6, α(N+)=0.01289 23

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.03/2+ STABLE μ=+0.935814 5 (2000Tr07), μ=+0.937365 20 (1972Ol01,1989Ra17), Q=+0.245 4 (1988We07,1989Ra17)
Δ<r2>(137Ba,138Ba)=-0.066 5 (1999GaZX).
   283.541/2+   B(E2)=0.025 2 from Coul. ex.
E(level): B(E2)=0.025 2 from Coul. ex. Level fed in primary cascade to g.s. or the first-excited state.
   661.65911/2- 2.552 m 1 
% IT = 100
μ=-0.992 26 (1983Mu12,1989Ra17), Q=+0.78 9 (1983Mu12,1989Ra17)
%two-photon/%single-photon<2.2×10-6 (1992Ba45).
  1899.43/2+   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  1907.523/2+   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  2182.223/2-   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  2355.61/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  2662.721/2-   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  2964.91/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3086.11/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3127.421/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3221.01/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3316.531/2-,3/2-   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3402.543/2-   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3606.1   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3680.801/2-,3/2-   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3720.91/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3798.89(1/2-,3/2-)   XREF: F(3805).
E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3850.31/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3857.11/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3963.11/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  3977.11/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  4149.971/2+,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  4206.11/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  4216.101/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
E(level)Jπ(level)T1/2(level)Comments
  4550.71/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  4594.91/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.
  4764.41/2,3/2   E(level): Level fed in primary cascade to g.s. or the first-excited state.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   283.54   283.53E(γ): from 1997WaZZ in (n,n’γ). 1997WaZZ in both (n,n’γ) and 137Cs β- decay and 1996Bi23 in 137Cs β- decay confirm this energy and did not find any evidence for a possible doublet at previously reported 279.96γ (1973Ke07,1973Ke22)
   661.659   661.657E(γ): from 1995HeZZ
  1481.8   230.0E(γ): Multiply placed
  2041.4   747.43E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  2228.9   747.5E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  2529.6  1868.8I(γ): probably multiply placed as only a small intensity can be assigned to this placement, as the transition has to be an M2
  2964.9  1057.4E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  3316.53   230.0E(γ): Multiply placed
  3720.9  1057.4E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided

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