ADOPTED LEVELS, GAMMAS for 148La

Author: N. Nica |  Citation: Nucl. Data Sheets 117, 1 (2014) |  Cutoff date: 1-Oct-2013 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=7690 keV 22S(n)= 4102 keV 22S(p)= 9734 keV 28Q(α)= -1860 keV 30
Reference: 2012WA38

References:
  A  148Ba β- decay  B  149Ba β-n decay (0.344 S)
  C  252Cf SF decay 

General Comments:

Levels: The bands observed in 148La are interpreted as aligned coupling of [πh11/2νh9/2]low spin to the deformed core rotor. (252Cf SF decay dataset, 2009Lu11)

Q-value: Q(β-n)=1234 21 (2012Wa38)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0A C (2-) 1.26 s 8 
% β- = 100
% β-n = 0.15 3
     
    47.21 3 A   (1-,2-)       47.22 4 
  100
(M1)
     0.0
(2-)
    56.034 25 A C (1+) 67 ns 4      56.08 4 
  100
E1
     0.0
(2-)
    61.44 3 A   (-)       61.48 4 
  100
M1,E2
     0.0
(2-)
   109.89 3 A   (1+)       48.44 4 
    53.81 4 
   109.87 5 
   58 1 
  100 2 
   23 2 
E1
M1,E2

    61.44
    56.034
     0.0
(-)
(1+)
(2-)
   133.668 24 A   (-)       72.20 5 
    86.44 4 
   133.53 4 
   50 5 
   52 2 
  100 2 

M1,E2
E2,M1
    61.44
    47.21
     0.0
(-)
(1-,2-)
(2-)
   140.92 22   C (2+)       84.7 3 
   141.1 3 
  100
   20.2
M1
[E1]
    56.034
     0.0
(1+)
(2-)
   154.49 4 A         44.43 6 
    98.5 2 
   107.32 5 
    7 1 
  100 21 
   15 2 



   109.89
    56.034
    47.21
(1+)
(1+)
(1-,2-)
   159.42 6 A         49.65 8 
    98.1 2 
   19 4 
  100 23 


   109.89
    61.44
(1+)
(-)
   168.71 4 A        112.73 5 
   168.68 5 
   33 2 
  100 7 


    56.034
     0.0
(1+)
(2-)
   201.26 5 A         46.30 6 
   145.48 5 
    3 2 
  100 3 


   154.49
    56.034

(1+)
   217.86 4 A         58.52 6 
    84.02 5 
   156.42 6 
   218.30 10 
   18 2 
  100 8 
   82 5 
   20 5 




   159.42
   133.668
    61.44
     0.0

(-)
(-)
(2-)
   230.46 5 A         96.58 6 
   120.95 20 
   174.55 5 
   66 7 
  100 20 
   97 10 



   133.668
   109.89
    56.034
(-)
(1+)
(1+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   261.08 5 A         92.40 5 
   127.38 6 
  100 4 
   62 8 


   168.71
   133.668

(-)
   282.2 4   C (3+)      141.3 3 
  100
M1(+E2)
   140.92
(2+)
   287.08 5 A        153.39 8 
   177.06 6 
   50 8 
  100 8 


   133.668
   109.89
(-)
(1+)
   338.80 10 A        205.13 9 
  100

   133.668
(-)
   350.6 4   C (4+)       68.4 3 
   209.7 3 
   18.9
  100
[M1(+E2)]
[E2]
   282.2
   140.92
(3+)
(2+)
   363.85 7 A        230.37 17 
   307.79 6 
   21 18 
  100 6 


   133.668
    56.034
(-)
(1+)
   369.23 4 A        214.96 5 
   235.62 6 
   259.37 5 
   312.76 6 
  100 4 
   45 2 
   69 4 
   40 6 




   154.49
   133.668
   109.89
    56.034

(-)
(1+)
(1+)
   401.15 7 A        246.66 6 
   345.1 2 
  100 10 
   20 5 


   154.49
    56.034

(1+)
   441.7 4   C (5+)       91.1 3 
   159.5 3 
   53.6
  100
[M1(+E2)]
[E2]
   350.6
   282.2
(4+)
(3+)
   471.89 5 A        270.25 12 
   317.63 20 
   410.65 7 
   415.78 6 
   41 4 
   18 3 
   42 2 
  100 2 




   201.26
   154.49
    61.44
    56.034


(-)
(1+)
   500.22 5 A        212.95 7 
   390.3 2 
   444.28 5 
   29 3 
   18 10 
  100 3 



   287.08
   109.89
    56.034

(1+)
(1+)
   538.08 11 A        369.3 2 
   404.46 14 
   476.6 2 
   23 9 
  100 9 
   95 36 



   168.71
   133.668
    61.44

(-)
(-)
   554.13 11 A        185.0 2 
   323.63 12 
   46 27 
  100 8 


   369.23
   230.46


E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   663.0 4   C (6+)      221.3 3 
   312.4 3 
   13.9
  100
[M1(+E2)]
[E2]
   441.7
   350.6
(5+)
(4+)
   708.2 5   C (7+)      266.5 3 
  100
[E2]
   441.7
(5+)
   717.22 9 A        583.6 2 
   607.33 11 
   661.1 2 
   10 3 
  100 8 
   14 5 



   133.668
   109.89
    56.034
(-)
(1+)
(1+)
   830.67 11 A        569.6 2 
   600.2 2 
   720.8 2 
   774.6 2 
   68 32 
  100 36 
   95 36 
   27 14 




   261.08
   230.46
   109.89
    56.034


(1+)
(1+)
  1060.1 5   C (8+)      351.9 3 ?
   397.1 3 
   <4
  100
[M1(+E2)]
[E2]
   708.2
   663.0
(7+)
(6+)
  1101.8 6   C (9+)      393.6 3 
  100
[E2]
   708.2
(7+)
  1229.04 10 A        757.15 13 
  1011.2 2 
  1173.0 2 
   74 32 
  100 42 
   63 42 



   471.89
   217.86
    56.034


(1+)
  1252.47 7 A        535.2 2 
  1118.82 7 
  1196.3 2 
   18 10 
  100 5 
   41 13 



   717.22
   133.668
    56.034

(-)
(1+)
  1495.9 6   C (10+)      435.8 3 
  100
[E2]
  1060.1
(8+)
  1612.4 7   C (11+)      510.6 3 
  100
[E2]
  1101.8
(9+)
  1980.0 7   C (12+)      484.1 3 
  100
[E2]
  1495.9
(10+)
  2226.0 7   C (13+)      613.6 3 
  100
[E2]
  1612.4
(11+)

E(level): From a least-squares fit to Eγ data, with normalized χ2=6.65> critical χ2=1.57. This fact is due to Eγ’s from 148Ba β- decay dataset, reported with higher than realistic precision

Jπ(level): For levels assigned in either band, assumed by 2009Lu11 (SF decay) based on the rotational character of this nucleus

I(γ): Relative photon branching from each level

M(γ): Based on α(K)exp measurements from γ’s from 148Ba β- decay; based on α(exp) measurements for γ’s from 252Cf 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 - Band based on (2+), α=0.
   140.92 22  (2+)        
   350.6 4  (4+)       68.4 3 
   209.7 3 
   18.9
  100
[M1(+E2)]
[E2]
   282.2
   140.92
(3+)
(2+)
   663.0 4  (6+)      221.3 3 
   312.4 3 
   13.9
  100
[M1(+E2)]
[E2]
   441.7
   350.6
(5+)
(4+)
  1060.1 5  (8+)      351.9 3 ?
   397.1 3 
   <4
  100
[M1(+E2)]
[E2]
   708.2
   663.0
(7+)
(6+)
  1495.9 6  (10+)      435.8 3 
  100
[E2]
  1060.1
(8+)
  1980.0 7  (12+)      484.1 3 
  100
[E2]
  1495.9
(10+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on (3+), α=1
   282.2 4  (3+)        
   441.7 4  (5+)       91.1 3 
   159.5 3 
   53.6
  100
[M1(+E2)]
[E2]
   350.6
   282.2
(4+)
(3+)
   708.2 5  (7+)      266.5 3 
  100
[E2]
   441.7
(5+)
  1101.8 6  (9+)      393.6 3 
  100
[E2]
   708.2
(7+)
  1612.4 7  (11+)      510.6 3 
  100
[E2]
  1101.8
(9+)
  2226.0 7  (13+)      613.6 3 
  100
[E2]
  1612.4
(11+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    47.21 (1-,2-)       47.22 4 (M1)9.47α=9.47, α(K)=8.07 12, α(L)=1.109 16, α(M)=0.231 4, α(N)=0.0507 8, α(O)=0.00822 12, α(P)=0.000633 9, α(N+)=0.0595 9
    56.034 (1+) 67 ns 4      56.08 4 E11.140B(E1)(W.u.)=9.6E-6 6, α=1.140, α(K)=0.959 14, α(L)=0.1436 21, α(M)=0.0297 5, α(N)=0.00637 9, α(O)=0.000971 14, α(P)=5.41E-5 8, α(N+)=0.00740 11
    61.44 (-)       61.48 4 M1,E28α=8 4, α(K)=4.1 4, α(L)=3 3, α(M)=0.7 6, α(N)=0.15 13, α(O)=0.021 17, α(P)=0.00026 4, α(N+)=0.17 14
   109.89 (1+)       48.44 4 E11.682α=1.682, α(K)=1.408 20, α(L)=0.218 3, α(M)=0.0451 7, α(N)=0.00965 14, α(O)=0.001458 21, α(P)=7.79×10-5 11, α(N+)=0.01118 16
(1+)       53.81 4 M1,E213α=13 7, α(K)=5.66 16, α(L)=6 5, α(M)=1.3 12, α(N)=0.27 24, α(O)=0.04 4, α(P)=0.00037 6, α(N+)=0.3 3
   133.668 (-)       86.44 4 M1,E22.5α=2.5 9, α(K)=1.63 24, α(L)=0.7 5, α(M)=0.15 11, α(N)=0.032 24, α(O)=0.005 4, α(P)=0.000104 6, α(N+)=0.04 3
(-)      133.53 4 E2,M10.60α=0.60 12, α(K)=0.45 5, α(L)=0.11 6, α(M)=0.025 13, α(N)=0.005 3, α(O)=0.0008 4, α(P)=3.01×10-5 17, α(N+)=0.006 4
   140.92 (2+)       84.7 3 M11.74α=1.74 3, α(K)=1.49 3, α(L)=0.202 4, α(M)=0.0420 8, α(N)=0.00922 16, α(O)=0.00150 3, α(P)=0.0001158 21, α(N+)=0.01083 19
(2+)      141.1 3 [E1]0.0907α=0.0907, α(K)=0.0776 12, α(L)=0.01040 16, α(M)=0.00215 4, α(N)=0.000467 8, α(O)=7.38×10-5 12, α(P)=4.96E-6 8, α(N+)=0.000545 9
   282.2 (3+)      141.3 3 M1(+E2)0.50α=0.50 9, α(K)=0.38 4, α(L)=0.09 5, α(M)=0.020 10, α(N)=0.0042 21, α(O)=0.0006 3, α(P)=2.56×10-5 16, α(N+)=0.0049 24
   350.6 (4+)       68.4 3 [M1(+E2)]5.6α=5.6 24, α(K)=3.1 4, α(L)=1.9 16, α(M)=0.4 4, α(N)=0.09 8, α(O)=0.013 10, α(P)=0.000197 19, α(N+)=0.10 9
(4+)      209.7 3 [E2]0.1517α=0.1517, α(K)=0.1173 18, α(L)=0.0271 4, α(M)=0.00584 9, α(N)=0.001254 19, α(O)=0.000188 3, α(P)=7.37×10-6 11, α(N+)=0.001449 22
   441.7 (5+)       91.1 3 [M1(+E2)]2.1α=2.1 7, α(K)=1.40 20, α(L)=0.5 4, α(M)=0.12 9, α(N)=0.025 18, α(O)=0.0037 25, α(P)=8.9×10-5 5, α(N+)=0.029 21
(5+)      159.5 3 [E2]0.386α=0.386, α(K)=0.283 5, α(L)=0.0814 13, α(M)=0.0177 3, α(N)=0.00378 6, α(O)=0.000555 9, α(P)=1.68×10-5 3, α(N+)=0.00436 7
   663.0 (6+)      221.3 3 [M1(+E2)]0.123α=0.123 5, α(K)=0.1002 21, α(L)=0.018 5, α(M)=0.0038 10, α(N)=0.00082 20, α(O)=0.00013 3, α(P)=7.1×10-6 9, α(N+)=0.00095 23
(6+)      312.4 3 [E2]0.0413α=0.0413, α(K)=0.0335 5, α(L)=0.00615 9, α(M)=0.001309 19, α(N)=0.000283 4, α(O)=4.35×10-5 7, α(P)=2.25E-6 4, α(N+)=0.000329 5
   708.2 (7+)      266.5 3 [E2]0.0686α=0.0686, α(K)=0.0548 8, α(L)=0.01091 16, α(M)=0.00233 4, α(N)=0.000503 8, α(O)=7.65×10-5 12, α(P)=3.59E-6 6, α(N+)=0.000583 9
  1060.1 (8+)      351.9 3 [M1(+E2)]0.032α=0.032 4, α(K)=0.027 4, α(L)=0.00400 10, α(M)=0.00084 3, α(N)=0.000183 5, α(O)=2.91×10-5 5, α(P)=2.0E-6 4, α(N+)=0.000214 5
(8+)      397.1 3 [E2]0.0199α=0.0199, α(K)=0.01643 24, α(L)=0.00273 4, α(M)=0.000576 9, α(N)=0.0001250 18, α(O)=1.95×10-5 3, α(P)=1.139E-6 17, α(N+)=0.0001456 21
  1101.8 (9+)      393.6 3 [E2]0.0204α=0.0204, α(K)=0.01685 24, α(L)=0.00281 4, α(M)=0.000593 9, α(N)=0.0001287 19, α(O)=2.00×10-5 3, α(P)=1.167E-6 17, α(N+)=0.0001499 22
  1495.9 (10+)      435.8 3 [E2]0.01516α=0.01516, α(K)=0.01261 18, α(L)=0.00202 3, α(M)=0.000426 6, α(N)=9.27×10-5 14, α(O)=1.452E-5 21, α(P)=8.83E-7 13, α(N+)=0.0001081 16
  1612.4 (11+)      510.6 3 [E2]0.00974α=0.00974 14, α(K)=0.00816 12, α(L)=0.001246 18, α(M)=0.000262 4, α(N)=5.70×10-5 8, α(O)=9.00E-6 13, α(P)=5.80E-7 9, α(N+)=6.66E-5 10
  1980.0 (12+)      484.1 3 [E2]0.01127α=0.01127, α(K)=0.00943 14, α(L)=0.001462 21, α(M)=0.000307 5, α(N)=6.69×10-5 10, α(O)=1.054E-5 15, α(P)=6.67E-7 10, α(N+)=7.81E-5 11
  2226.0 (13+)      613.6 3 [E2]0.00600α=0.00600 9, α(K)=0.00507 8, α(L)=0.000737 11, α(M)=0.0001540 22, α(N)=3.36×10-5 5, α(O)=5.35E-6 8, α(P)=3.65E-7 6, α(N+)=3.93E-5 6

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(2-) 1.26 s 8 
% β- = 100
% β-n = 0.15 3
Recommended delayed neutron emission probability (1993Ru01). Others: 0.24% 2 (1993Ru01), 0.13% 1 (1983Re10), 0.143% 15 (1986ReZR), 0.11% 1 (1986Wa17), 0.13% 2 (1984Ma39), <0.1% (1982Ga24).
    56.034(1+) 67 ns 4  J=1+ from log ft=4.8 via 0+ parent (1984Ch02); parentheses on adopted Jπ indicate uncertainty in β- branching estimates.
E(level): J=1+ from log ft=4.8 via 0+ parent (1984Ch02); parentheses on adopted Jπ indicate uncertainty in β- branching estimates.
   109.89(1+)   J=1+ from log ft=5.0 via 0+ parent (1984Ch02); parentheses on adopted Jπ indicate uncertainty in β- branching estimates.
E(level): J=1+ from log ft=5.0 via 0+ parent (1984Ch02); parentheses on adopted Jπ indicate uncertainty in β- branching estimates.
   140.92(2+)   E(level): Band based on (2+), α=0.
   282.2(3+)   E(level): Band based on (3+), α=1.
   350.6(4+)   E(level): Band based on (2+), α=0.
   441.7(5+)   E(level): Band based on (3+), α=1.
   663.0(6+)   E(level): Band based on (2+), α=0.
   708.2(7+)   E(level): Band based on (3+), α=1.
  1060.1(8+)   E(level): Band based on (2+), α=0.
  1101.8(9+)   E(level): Band based on (3+), α=1.
  1495.9(10+)   E(level): Band based on (2+), α=0.
  1612.4(11+)   E(level): Band based on (3+), α=1.
  1980.0(12+)   E(level): Band based on (2+), α=0.
  2226.0(13+)   E(level): Band based on (3+), α=1.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   133.668   133.53E(γ): Differs by 3σ or more from the value calculated from the energy difference of initial and final levels
   140.92    84.7M(γ): from α(exp)=1.51 49 (2009Lu11)
   217.86    84.02E(γ): Differs by 3σ or more from the value calculated from the energy difference of initial and final levels
   218.30E(γ): Differs by 3σ or more from the value calculated from the energy difference of initial and final levels
   230.46    96.58E(γ): Differs by 3σ or more from the value calculated from the energy difference of initial and final levels
   282.2   141.3M(γ): from α(exp)=0.54 18 (2009Lu11)
   471.89   270.25E(γ): Differs by 3σ or more from the value calculated from the energy difference of initial and final levels

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