ADOPTED LEVELS, GAMMAS for 143Cs

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 113, 715 (2012) |  Cutoff date: 31-May-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=6263 keV 22S(n)= 5227 keV 23S(p)= 9733 keV 23Q(α)= -1.64×103 keV 4
Reference: 2012WA38

References:
  A  143Xe β- decay  B  248Cm,252Cf SF decay

General Comments:

143Cs produced from fission of 238U: 2009Pa49, 2006Ho05, 2002Pa31.

Calculated β- spectrum: 2001Ka46.

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

Q-value: 2003Au03: Q(β-)=6264 22, S(n)=5228 25, S(p)=9.49×103 10, Q(α)=-1260 40










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0AB 3/2+ 1.791 s 7 
% β- = 100
% β-n = 1.64 7
     
    76.6 3  B 5/2+      76.5
  100
(M1)
     0
3/2+
    90.3 3 AB 7/2+      90.4
  100
[E2]
     0
3/2+
   349.1 3  B 9/2+     258.8
  272.5
   45 4 
  100 6 
(M1)
E2
    90.3
    76.6
7/2+
5/2+
   372.4 4  B 11/2+     282.0
  100 5 

    90.3
7/2+
   755.9 4  B 13/2+     383.6
  406.8
   26 3 
  100 7 
M1+E2

   372.4
   349.1
11/2+
9/2+
   769.1 4  B 15/2+     396.6
  100
E2
   372.4
11/2+
   816.6 4  B 9/2-     726.3
  100
(E1)
    90.3
7/2+
   872.6 4  B 11/2-     500.3
  523.5
   77 8 
  100 17 

E1
   372.4
   349.1
11/2+
9/2+
  1072.1 4  B 13/2-     255.5
  699.8
  100
 
E2

   816.6
   372.4
9/2-
11/2+
  1155.6 4  B 15/2-      83.5
  283.0
  399.6
 
   88 13 
  100 2 

E2
E1
  1072.1
   872.6
   755.9
13/2-
11/2-
13/2+
  1182.3 4  B 13/2     809.9
  100
E1,M1
   372.4
11/2+
  1253.9 4  B 19/2+     484.8
  100
E2
   769.1
15/2+
  1254.7 4  B 17/2+     485.5
  498.9
   23 3 
  100 13 

E2
   769.1
   755.9
15/2+
13/2+
  1398.0 4  B 17/2-     325.9
  628.8
  100
 
E2
E1
  1072.1
   769.1
13/2-
15/2+
  1549.9 4  B 19/2-     152
  295.0
  394.4
    3 1 
   11 2 
  100 11 



  1398.0
  1254.7
  1155.6
17/2-
17/2+
15/2-
  1558.7 4  B 17/2     376.5
  789.7
    8 2 
  100 10 

M1,E1
  1182.3
   769.1
13/2
15/2+
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1803.1 4  B 21/2-     404.9
  549.3
  100
 
(E2)

  1398.0
  1253.9
17/2-
19/2+
  1805.1 5  B 23/2+     551.2
  100
E2
  1253.9
19/2+
  1812.6 4  B 21/2+     557.9
  558.7
  100 10 
   40 10 
E2

  1254.7
  1253.9
17/2+
19/2+
  2032.4 5  B (23/2-)     482.5
  100

  1549.9
19/2-
  2052.8 5  B (21/2)     494.1
  798.8
  100 16 
   40 8 


  1558.7
  1253.9
17/2
19/2+
  2294.1 5  B (25/2-)     489.0
  490.9
 
  100


  1805.1
  1803.1
23/2+
21/2-
  2424.1 6  B 27/2+     619.0
  100
E2
  1805.1
23/2+
  2427.7 5  B 25/2+     615.3
  622.5
  100 15 
   40 15 
E2

  1812.6
  1805.1
21/2+
23/2+
  2581.1 6  B     548.7
  100

  2032.4
(23/2-)
  2627.1 6  B     574.3
  100

  2052.8
(21/2)
  2860.8 6  B     566.7
  100

  2294.1
(25/2-)
  3086.8 6  B     659.0
  100

  2427.7
25/2+
  3118.1 6  B     694.0
  100

  2424.1
27/2+

E(level): Deduced by evaluators from least-squares fit to γ-ray energies assuming 0.3 keV uncertainty for each γ ray.

Jπ(level): Jπ assignments are from 248Cm SF decay (2004Ur01), based on γ-ray multipolarities and rotational-band structure.

M(γ): From angular correlation and linear polarization coefficients measured in 248Cm SF decay.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - GS ROTATIONAL band
     0 3/2+ 1.791 s 7 
% β- = 100
% β-n = 1.64 7
     
    90.3 3  7/2+      90.4
  100
[E2]
     0
3/2+
   372.4 4  11/2+     282.0
  100 5 

    90.3
7/2+
   769.1 4  15/2+     396.6
  100
E2
   372.4
11/2+
  1253.9 4  19/2+     484.8
  100
E2
   769.1
15/2+
  1805.1 5  23/2+     551.2
  100
E2
  1253.9
19/2+
  2424.1 6  27/2+     619.0
  100
E2
  1805.1
23/2+
  3118.1 6      694.0
  100

  2424.1
27/2+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 5/2+ ROTATIONAL band
    76.6 3  5/2+        
   349.1 3  9/2+     258.8
  272.5
   45 4 
  100 6 
(M1)
E2
    90.3
    76.6
7/2+
5/2+
   755.9 4  13/2+     383.6
  406.8
   26 3 
  100 7 
M1+E2

   372.4
   349.1
11/2+
9/2+
  1254.7 4  17/2+     485.5
  498.9
   23 3 
  100 13 

E2
   769.1
   755.9
15/2+
13/2+
  1812.6 4  21/2+     557.9
  558.7
  100 10 
   40 10 
E2

  1254.7
  1253.9
17/2+
19/2+
  2427.7 5  25/2+     615.3
  622.5
  100 15 
   40 15 
E2

  1812.6
  1805.1
21/2+
23/2+
  3086.8 6      659.0
  100

  2427.7
25/2+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - 9/2- (octupole) VIBRATIONAL band
   816.6 4  9/2-        
  1072.1 4  13/2-     255.5
  699.8
  100
 
E2

   816.6
   372.4
9/2-
11/2+
  1398.0 4  17/2-     325.9
  628.8
  100
 
E2
E1
  1072.1
   769.1
13/2-
15/2+
  1803.1 4  21/2-     404.9
  549.3
  100
 
(E2)

  1398.0
  1253.9
17/2-
19/2+
  2294.1 5  (25/2-)     489.0
  490.9
 
  100


  1805.1
  1803.1
23/2+
21/2-
  2860.8 6      566.7
  100

  2294.1
(25/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - 11/2- (octupole) VIBRATIONAL band
   872.6 4  11/2-        
  1155.6 4  15/2-      83.5
  283.0
  399.6
 
   88 13 
  100 2 

E2
E1
  1072.1
   872.6
   755.9
13/2-
11/2-
13/2+
  1549.9 4  19/2-     152
  295.0
  394.4
    3 1 
   11 2 
  100 11 



  1398.0
  1254.7
  1155.6
17/2-
17/2+
15/2-
  2032.4 5  (23/2-)     482.5
  100

  1549.9
19/2-
  2581.1 6      548.7
  100

  2032.4
(23/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - (13/2) band
  1182.3 4  13/2        
  1558.7 4  17/2     376.5
  789.7
    8 2 
  100 10 

M1,E1
  1182.3
   769.1
13/2
15/2+
  2052.8 5  (21/2)     494.1
  798.8
  100 16 
   40 8 


  1558.7
  1253.9
17/2
19/2+
  2627.1 6      574.3
  100

  2052.8
(21/2)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    76.6 5/2+      76.5(M1)1.94α=1.94, α(K)=1.662 24, α(L)=0.222 4, α(M)=0.0455 7, α(N)=0.00962 14, α(O)=0.001336 19, α(P)=6.54×10-5 10, α(N+)=0.01102 16
    90.3 7/2+      90.4[E2]2.67α=2.67, α(K)=1.643 23, α(L)=0.815 12, α(M)=0.1766 25, α(N)=0.0358 5, α(O)=0.00417 6, α(P)=4.47×10-5 7, α(N+)=0.0400 6
   349.1 9/2+     258.8(M1)0.0656α=0.0656, α(K)=0.0564 8, α(L)=0.00734 11, α(M)=0.001501 21, α(N)=0.000317 5, α(O)=4.43×10-5 7, α(P)=2.20E-6 3, α(N+)=0.000364 5
9/2+     272.5E20.0593α=0.0593, α(K)=0.0482 7, α(L)=0.00887 13, α(M)=0.00186 3, α(N)=0.000384 6, α(O)=4.95×10-5 7, α(P)=1.613E-6 23, α(N+)=0.000435 6
   755.9 13/2+     383.6M1+E20.0219α=0.0219 17, α(K)=0.0186 18, α(L)=0.00266 6, α(M)=0.000547 16, α(N)=0.000115 3, α(O)=1.56×10-5 3, α(P)=6.9E-7 10, α(N+)=0.000131 3
   769.1 15/2+     396.6E20.0183α=0.0183, α(K)=0.01529 22, α(L)=0.00242 4, α(M)=0.000502 7, α(N)=0.0001047 15, α(O)=1.387×10-5 20, α(P)=5.38E-7 8, α(N+)=0.0001191 17
   816.6 9/2-     726.3(E1)0.001362α=0.001362 19, α(K)=0.001180 17, α(L)=0.0001453 21, α(M)=2.95×10-5 5, α(N)=6.22E-6 9, α(O)=8.66E-7 13, α(P)=4.28E-8 6, α(N+)=7.13E-6
   872.6 11/2-     523.5E10.00279α=0.00279 4, α(K)=0.00241 4, α(L)=0.000300 5, α(M)=6.09×10-5 9, α(N)=1.285E-5 18, α(O)=1.780E-6 25, α(P)=8.66E-8 13, α(N+)=1.471E-5 21
  1072.1 13/2-     255.5E20.0733α=0.0733, α(K)=0.0591 9, α(L)=0.01123 16, α(M)=0.00236 4, α(N)=0.000487 7, α(O)=6.24×10-5 9, α(P)=1.96E-6 3, α(N+)=0.000552 8
  1155.6 15/2-     283.0E20.0525α=0.0525, α(K)=0.0427 6, α(L)=0.00773 11, α(M)=0.001617 23, α(N)=0.000335 5, α(O)=4.33×10-5 6, α(P)=1.440E-6 21, α(N+)=0.000380 6
15/2-     399.6E10.00528α=0.00528 8, α(K)=0.00457 7, α(L)=0.000574 8, α(M)=0.0001166 17, α(N)=2.45×10-5 4, α(O)=3.39E-6 5, α(P)=1.621E-7 23, α(N+)=2.81E-5 4
  1253.9 19/2+     484.8E20.01026α=0.01026, α(K)=0.00864 12, α(L)=0.001287 18, α(M)=0.000266 4, α(N)=5.56×10-5 8, α(O)=7.46E-6 11, α(P)=3.10E-7 5, α(N+)=6.34E-5 9
  1254.7 17/2+     498.9E20.00947α=0.00947 14, α(K)=0.00799 12, α(L)=0.001181 17, α(M)=0.000244 4, α(N)=5.10×10-5 8, α(O)=6.85E-6 10, α(P)=2.87E-7 4, α(N+)=5.81E-5 9
  1398.0 17/2-     325.9E20.0335α=0.0335, α(K)=0.0276 4, α(L)=0.00469 7, α(M)=0.000977 14, α(N)=0.000203 3, α(O)=2.65×10-5 4, α(P)=9.47E-7 14, α(N+)=0.000230 4
17/2-     628.8E10.00185α=0.00185 3, α(K)=0.001603 23, α(L)=0.000198 3, α(M)=4.02×10-5 6, α(N)=8.49E-6 12, α(O)=1.179E-6 17, α(P)=5.79E-8 9, α(N+)=9.73E-6 14
  1805.1 23/2+     551.2E20.00721α=0.00721 10, α(K)=0.00611 9, α(L)=0.000881 13, α(M)=0.000181 3, α(N)=3.80×10-5 6, α(O)=5.14E-6 8, α(P)=2.21E-7 3, α(N+)=4.34E-5 6
  1812.6 21/2+     557.9E20.00698α=0.00698 10, α(K)=0.00592 9, α(L)=0.000851 12, α(M)=0.0001752 25, α(N)=3.67×10-5 6, α(O)=4.96E-6 7, α(P)=2.14E-7 3, α(N+)=4.19E-5 6
  2424.1 27/2+     619.0E20.00532α=0.00532 8, α(K)=0.00452 7, α(L)=0.000635 9, α(M)=0.0001305 19, α(N)=2.74×10-5 4, α(O)=3.72E-6 6, α(P)=1.649E-7 23, α(N+)=3.13E-5 5
  2427.7 25/2+     615.3E20.00540α=0.00540 8, α(K)=0.00459 7, α(L)=0.000646 9, α(M)=0.0001327 19, α(N)=2.79×10-5 4, α(O)=3.78E-6 6, α(P)=1.674E-7 24, α(N+)=3.18E-5 5

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     03/2+ 1.791 s 7 
% β- = 100
% β-n = 1.64 7
Delayed neutron emission probability=1.62% 10 (evaluated in 1983ReZX). Others: 1.68% 17 (1981En05), 1.54% 9 (1980Lu04), 1.74% 12 (1979Ri09), 1.79% 13 (1981ReZW).
E(level): GS ROTATIONAL band.
    76.65/2+   E(level): 5/2+ ROTATIONAL band.
    90.37/2+   E(level): GS ROTATIONAL band.
   349.19/2+   E(level): 5/2+ ROTATIONAL band.
   372.411/2+   E(level): GS ROTATIONAL band.
   755.913/2+   E(level): 5/2+ ROTATIONAL band.
   769.115/2+   E(level): GS ROTATIONAL band.
   816.69/2-   E(level): 9/2- (octupole) VIBRATIONAL band.
   872.611/2-   E(level): 11/2- (octupole) VIBRATIONAL band.
  1072.113/2-   E(level): 9/2- (octupole) VIBRATIONAL band.
  1155.615/2-   E(level): 11/2- (octupole) VIBRATIONAL band.
  1182.313/2   E(level): (13/2) band.
  1253.919/2+   E(level): GS ROTATIONAL band.
  1254.717/2+   E(level): 5/2+ ROTATIONAL band.
  1398.017/2-   E(level): 9/2- (octupole) VIBRATIONAL band.
  1549.919/2-   E(level): 11/2- (octupole) VIBRATIONAL band.
  1558.717/2   E(level): (13/2) band.
  1803.121/2-   E(level): 9/2- (octupole) VIBRATIONAL band.
  1805.123/2+   E(level): GS ROTATIONAL band.
  1812.621/2+   E(level): 5/2+ ROTATIONAL band.
  2032.4(23/2-)   E(level): 11/2- (octupole) VIBRATIONAL band.
  2052.8(21/2)   E(level): (13/2) band.
  2294.1(25/2-)   E(level): 9/2- (octupole) VIBRATIONAL band.
  2424.127/2+   E(level): GS ROTATIONAL band.
  2427.725/2+   E(level): 5/2+ ROTATIONAL band.
E(level)Jπ(level)T1/2(level)Comments
  2581.1   E(level): 11/2- (octupole) VIBRATIONAL band.
  2627.1   E(level): (13/2) band.
  2860.8   E(level): 9/2- (octupole) VIBRATIONAL band.
  3086.8   E(level): 5/2+ ROTATIONAL band.
  3118.1   E(level): GS ROTATIONAL band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    90.3    90.4M(γ): From level scheme.

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