ADOPTED LEVELS, GAMMAS for 135Cs

Authors: Balraj Singh, Alexander A. Rodionov and Yuri L. Khazov |  Citation: Nucl. Data Sheets 109, 517 (2008) |  Cutoff date: 22-Jan-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=268.9 keV 11S(n)= 8762.0 keV 10S(p)= 6746.5 keV 13Q(α)= -2563.9 keV 12
Reference: 2012WA38

References:
  A  135Xe β- decay (9.14 H)  B  135Xe β- decay (15.29 M)
  C  135Cs IT decay (53 M)  D  134Cs(n,γ) E=TH
  E  138Ba(μ-,3nγ) 

General Comments:

Isotope shift measurements: 1986Bo45, 1986Ba59, 1978Ge15, 1975Ul02, 1967Hu01

Mass measurements: 1999Am05 (penning trap), 1990St25, 1982Au01

Nuclear structure calculations: 2005Si05 and 2000Pa61 (charge radii, isotope shifts), 1977Ok04 (low-lying collective states), 1971Ch12 and 1969Fr17 (levels, transition rates, magnetic moment, Q, unified model)

128Te(14N,n2pα) E=64-90 MeV: 2005Un01: measured excitation functions

Q-value: Note: Current evaluation has used the following Q record










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCDE 7/2+ 2.3×10+6 y 3 
% β- = 100
     
   249.767 4 A  DE 5/2+ 0.28 ns 8     249.770 4 
  100
M1(+E2)
     0.0
7/2+
   408.026 5 A  D       158.260 4 
   408.009 8 
   81 3 
  100 3 


   249.767
     0.0
5/2+
7/2+
   608.153 8 A  D  5/2+      200.19 10 
   358.384 9 
   608.151 12 
    0.40 16 
    7.6 3 
  100 3 

M1,E2
M1(+E2)
   408.026
   249.767
     0.0

5/2+
7/2+
   786.838 13  BCD  11/2+      786.836 13 
  100
E2
     0.0
7/2+
   981.396 19 A  D       373.13 10 
   573.36 4 
   731.634 21 
   28 5 
    8.7 13 
  100 5 



   608.153
   408.026
   249.767
5/2+

5/2+
  1062.385 13 A  D       454.2 2 
   654.296 23 
   812.635 22 
  1062.41 2 
    5.1 10 
   64 3 
  100 3 
    5.8 12 




   608.153
   408.026
   249.767
     0.0
5/2+

5/2+
7/2+
  1133? B        1133?
  100

     0.0
7/2+
  1192? B        1192.2?
  100

     0.0
7/2+
  1358? B        1358?
  100

     0.0
7/2+
  1632.9  C   19/2- 53 m 2 
% IT = 100
   846.1
  100
M4
   786.838
11/2+

E(level): From least-squares fit to Eγ’s. Seven neutron resonances at E(n)= 0.01225, 0.03915, 0.05720, 0.1068, 0.1533, 0.170 and 0.263 keV are listed in the dataset: 134Cs(n,γ):resonances

E(γ): From 134Cs(n,γ), except as noted

I(γ): Relative photon branchings from 135Xe β- decay (9.14 h), unless otherwise stated

M(γ): From ce data in 135Xe β- decay (9.14 h), unless otherwise stated

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
   249.767 5/2+ 0.28 ns 8     249.770 4 M1(+E2)1.0 LT0.0738B(E2)(W.u.)=23 7, B(M1)(W.u.)=0.0023 7, α=0.0738 21, α(K)=0.0623 10, α(L)=0.0091 11, α(M)=0.00188 23, α(N)=0.00039 5, α(O)=5.3E-5 5, α(P)=2.34E-6 9, α(N+)=0.00045 5
   608.153 5/2+      358.384 9 M1,E2 0.0265α=0.0265 17, α(K)=0.0224 18, α(L)=0.00325 15, α(M)=0.00067 4, α(N)=0.000141 7, α(O)=1.90×10-5 4, α(P)=8.3E-7 11, α(N+)=0.000160 7
5/2+      608.151 12 M1(+E2)0.5 LT0.00730α=0.00730 22, α(K)=0.00629 20, α(L)=0.000803 19, α(M)=0.000164 4, α(N)=3.47×10-5 9, α(O)=4.84E-6 13, α(P)=2.41E-7 9, α(N+)=3.97E-5 10
   786.838 11/2+      786.836 13 E2 0.00295α=0.00295, α(K)=0.00252 4, α(L)=0.000339 5, α(M)=6.93×10-5 10, α(N)=1.458E-5 21, α(O)=2.00E-6 3, α(P)=9.29E-8 13, α(N+)=1.668E-5 24
  1632.9 19/2- 53 m 2 
% IT = 100
   846.1M4 0.0421B(M4)(W.u.)=0.0158 7, α=0.0421, α(K)=0.0350 5, α(L)=0.00565 8, α(M)=0.001185 17, α(N)=0.000250 4, α(O)=3.42×10-5 5, α(P)=1.558E-6 22, α(N+)=0.000286 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.07/2+ 2.3×10+6 y 3 
% β- = 100
μ=+2.7324 2 (1989Ra17,1957St11), Q=+0.050 2 (1989Ra17,1975Ac01)
(<r2>)1/2=4.807 fm 5 (2004An14, evaluation).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   608.153   200.19E(γ): From 135Xe β- decay (9.14 h)
   786.838   786.836M(γ): from 135Cs IT decay
   981.396   373.13E(γ): From 135Xe β- decay (9.14 h)
  1062.385   454.2E(γ): From 135Xe β- decay (9.14 h)
  1062.41E(γ): From 135Xe β- decay (9.14 h)
  1133  1133E(γ): From 135Xe β- decay (15.29 min)
I(γ): From 135Xe β- decay (15.29 min)
  1192  1192.2E(γ): From 135Xe β- decay (15.29 min)
I(γ): From 135Xe β- decay (15.29 min)
  1358  1358E(γ): From 135Xe β- decay (15.29 min)
I(γ): From 135Xe β- decay (15.29 min)

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