ADOPTED LEVELS, GAMMAS for 136Cs

Author: E.A. Mccutchan |  Citation: Nucl. Data Sheets 152, 331 (2018) |  Cutoff date: 1-Apr-2018 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=2548.2 keV 19S(n)= 6828.4 keV 21S(p)= 7215 keV 4Q(α)= -3060 keV 4
Reference: 2017WA10

References:
  A  136Cs IT decay (17.5 S)  B  136Xe(3He,t)
  C  138Ba(μ-,2nγ)  D  238U(12C,Fγ),208Pb(18O,Fγ)

General Comments:

See 138Ba(μ-,2nγ) for possible unplaced gammas

Q-value: S(2n)=15590.2 19; S(2p)=16873 5 (2017Wa10)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0.0A    5+ 13.01 d 5 
% β- = 100
     
    104.8 3 A    4+      104.8
  100
(E2)
      0.0
5+
    517.9 1 A  D 8- 17.5 s 2 
% IT > 0
% β- = ?
   413.1 3 
   517.9 1 
    0.072
  100
M4
E3
    104.8
      0.0
4+
5+
    583.9 5    D 9-       66.0 5 
  100
M1
    517.9
8-
    590 5  B   1+        
    850 5  B   1+        
   1000 5  B   (2-)        
   1910 5  B   1+        
   1982.3 6    D (11-)     1398.4 3 
  100

    583.9
9-
   2010 5  B   1+        
   2243.9 6    D (12-)      261.6 2 
  100

   1982.3
(11-)
   2290 5  B   1+        
   2360 5  B   1+        
   2450 5  B   1+        
   2500 5  B   1+        
   2550 5  B   1+        
   2600 5  B   1+        
   2710 5  B   1+        
   2810 5  B   1+        
   2910 5  B   1+        
   2927.6 7    D (12-)      945.3 4 
  100

   1982.3
(11-)
   2973.7 7    D (13-)      729.8 3 
  100

   2243.9
(12-)
   3257.8 7    D (13-)      330.2 3 
  1013.7 5 
  100 25 
  100 40 


   2927.6
   2243.9
(12-)
(12-)
   3380.1 7    D (14-)      406.4 3 
  100

   2973.7
(13-)
   3420 5  B   1+        
   3486.8 7    D (14-)      229.0 4 
   513.2 4 
  100 25 
  100 30 


   3257.8
   2973.7
(13-)
(13-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   3520 5  B   1+        
   3562.5 7    D (13+)      635.0 5 
  1318.5 5 
   50 25 
  100 40 


   2927.6
   2243.9
(12-)
(12-)
   3684.0 7    D (14+)      121.4 5 
   710.4 3 
   17 4 
  100 30 
M1

   3562.5
   2973.7
(13+)
(13-)
   3929.1 8    D (15+)      245.1 3 
  100

   3684.0
(14+)
   4086.7 7    D (15-)      599.8 5 
   706.5 5 
  1113.2 5 
  100 30 
   11 6 
   56 22 



   3486.8
   3380.1
   2973.7
(14-)
(14-)
(13-)
   4359.2 9    D (16-)      979.1 5 
  100

   3380.1
(14-)
   4396.1 8    D (16-)      309.4 4 
  1015.9 5 
  100 50 
   50 25 


   4086.7
   3380.1
(15-)
(14-)
   4645.8 9    D      716.7 4 
  100

   3929.1
(15+)
  13380 B   0+        

E(level): From a least-squares fit to Eγ for level connected by γ-rays, except where noted. Levels with ΔE > 1 keV are from 136Xe(3He,t)

Jπ(level): From 238U(12C,Fγ),208Pb(18O,Fγ) based on the assumptions that 1) spin values increase with excitation energy along the yrast line and 2) most of the transitions are dipole in character as well as comparisons with shell model calculations, except where noted.

M(γ): From experimental conversion coefficients and subshell ratios in 136Cs IT Decay, except where noted.

Back to top

Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Sequence based on (11-). Configuration=πd5/2~#πg7/24~#νh11/2-1
   1982.3 6  (11-)        
   2243.9 6  (12-)      261.6 2 
  100

   1982.3
(11-)
   2973.7 7  (13-)      729.8 3 
  100

   2243.9
(12-)
   3380.1 7  (14-)      406.4 3 
  100

   2973.7
(13-)
   4359.2 9  (16-)        
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Sequence based on (12-). Configuration=πg7/23~#πd5/22~#νh11/2-1
   2927.6 7  (12-)        
   3257.8 7  (13-)      330.2 3 
  1013.7 5 
  100 25 
  100 40 


   2927.6
   2243.9
(12-)
(12-)
   3486.8 7  (14-)      229.0 4 
   513.2 4 
  100 25 
  100 30 


   3257.8
   2973.7
(13-)
(13-)
   4086.7 7  (15-)      599.8 5 
   706.5 5 
  1113.2 5 
  100 30 
   11 6 
   56 22 



   3486.8
   3380.1
   2973.7
(14-)
(14-)
(13-)
   4396.1 8  (16-)        
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Sequence based on (13+). Possible configuration=πh11/2~#πg7/22~#νh11/2-1
   3562.5 7  (13+)        
   3684.0 7  (14+)      121.4 5 
   710.4 3 
   17 4 
  100 30 
M1

   3562.5
   2973.7
(13+)
(13-)
   3929.1 8  (15+)      245.1 3 
  100

   3684.0
(14+)
   4645.8 9       716.7 4 
  100

   3929.1
(15+)

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    5901+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
    8501+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   1000(2-)   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   19101+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   20101+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   22901+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   23601+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   24501+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   25001+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   25501+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   26001+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   27101+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   28101+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   29101+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   34201+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.
   35201+   Jπ(level): From shapes of measured σ(θ) in (3He,t) and comparison with DWBA calculations.

Back to top

Additional Gamma Comments:

E(level)E(gamma)Comments
    583.9     66.0M(γ): from α(exp) in 238U(12C,Fγ),208Pb(18O,Fγ)
   3684.0    121.4M(γ): from α(exp) in 238U(12C,Fγ),208Pb(18O,Fγ)

Back to top