ADOPTED LEVELS, GAMMAS for 154Nd

Author: N. Nica |  Citation: Nucl. Data Sheets 200, 2 (2025) |  Cutoff date: 22-Aug-2022 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=2687 keV 25S(n)= 6320.5 keV 29S(p)= 11300 keV 12Q(α)= -3158 keV 12
Reference: 2021WA16

References:
  A  154Pr β- decay  B  252Cf,248Cm SF decay
  C  239Pu(n,Fγ) 








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABC 0+ 25.9 s 2 
% β- = 100
     
    70.80 10 ABC 2+ 7.7 ns 20      70.8 1 
  100
[E2]
     0.0
0+
   233.24 14 ABC 4+      162.4 1 
  100
[E2]
    70.80
2+
   481.4 4  BC 6+      248.4 3 
  100
[E2]
   233.24
4+
   808.7 5  BC 8+      327.3 3 
  100
[E2]
   481.4
6+
   961.4 5 A C (1-)      891.2 10 
   961.8 10 
  100 19 
   48 14 


    70.80
     0.0
2+
0+
  1002.83 21 ABC (2-)      932.11 24 
  100

    70.80
2+
  1027.68 19 A C (3-)      794.4 3 
   956.90 21 
  100 7 
   92 22 


   233.24
    70.80
4+
2+
  1128.26 22 ABC (4-)      125.5 3 
   895.04 24 
   18 3 
  100 18 


  1002.83
   233.24
(2-)
4+
  1162.9 3   C (5-)      682?
   929.4 3 
 
  100


   481.4
   233.24
6+
4+
  1209.1 6  BC 10+      400.4 3 
  100
[E2]
   808.7
8+
  1297.97 22   C (4-) 3.0 µs 3     134.8 3 
   169.8 3 
   270.3 3 
   295.3 3 
   17.8 22 
  100 16 
   47 9 
   33 7 
[M1+E2]
[M1+E2]
[M1+E2]
[E2]
  1162.9
  1128.26
  1027.68
  1002.83
(5-)
(4-)
(3-)
(2-)
  1325.4 4  BC (6-)      197.2 3 
   843.8
  100
   57


  1128.26
   481.4
(4-)
6+
  1348.8 8 ? B  (5-)      870
  1113
  100
  ≈14


   481.4
   233.24
6+
4+
  1384.3 3   C (5-)       86.3 2 
  100

  1297.97
(4-)
  1488.0 4   C (6-)      103.8 2 
   190?
  100 50 
    7


  1384.3
  1297.97
(5-)
(4-)
  1523.7 4 A        520.7 4 
   562.5 4 
   36.1 24 
  100 4 


  1002.83
   961.4
(2-)
(1-)
  1583.8 8 A        581.0 7 
  100

  1002.83
(2-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  1593.7 5  BC (8-)      268.3 3 
   784.8?
  100
 


  1325.4
   808.7
(6-)
8+
  1608.7 4   C (7-)      120.7 2 
   224
  100 50 
    8


  1488.0
  1384.3
(6-)
(5-)
  1675.5 6  BC 12+ 1.9 ps    466.4 3 
  100
[E2]
  1209.1
10+
  1746.8 5   C (8-)      138.1 2 
   259?
  100 40 
   18


  1608.7
  1488.0
(7-)
(6-)
  1902.4 5   C (9-)      155.6 2 
   293
  100 29 
   71


  1746.8
  1608.7
(8-)
(7-)
  1931.8 6  BC (10-)      338.1 3 
  100

  1593.7
(8-)
  2074.6 6   C (10-)      172.2 2 
   328
  100 33 
   25


  1902.4
  1746.8
(9-)
(8-)
  2194.1 10 A        670.4 9 
  100

  1523.7

  2200.8 7  BC 14+ 1.0 ps    525.3 3 
  100
[E2]
  1675.5
12+
  2263.8 6   C (11-)      189.2 2 
   361?
  100 50 
   56


  2074.6
  1902.4
(10-)
(9-)
  2337.4 7  BC (12-)      405.6 3 
  100

  1931.8
(10-)
  2468.0 6   C (12-)      204.2 2 
   394
  100 50 
   14


  2263.8
  2074.6
(11-)
(10-)
  2691.6 7   C (13-)      223.5 2 
   428
  100 40 
  100


  2468.0
  2263.8
(12-)
(11-)
  2777.3 8  BC 16+ 0.69 ps    576.5 3 
  100
[E2]
  2200.8
14+
  2807.3 7  BC (14-)      469.9 3 
  100

  2337.4
(12-)
  2950.3 7   C (14-)      258.7 2 
  100

  2691.6
(13-)
  3337.8 8  BC (16-)      530.5 3 
  100

  2807.3
(14-)
  3399.3? BC (18+)      619.6 9 ?
  100

  2777.3
16+

E(level): From a least-squares fit to the listed γ energies.

Jπ(level): For the members of the yrast and the side bands: from (n,Fγ) based on considerations of the expected band structure and the deexcitation characteristics of spontaneous-fission fragments. Individual arguments are given for levels reported only in the 154Pr β- decay.

T1/2(level): From 1994Sm07 in 252Cf,248Cm SF decay unless noted otherwise.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Kπ=0+ band
     0.0 0+ 25.9 s 2 
% β- = 100
     
    70.80 10  2+ 7.7 ns 20      70.8 1 
  100
[E2]
     0.0
0+
   233.24 14  4+      162.4 1 
  100
[E2]
    70.80
2+
   481.4 4  6+      248.4 3 
  100
[E2]
   233.24
4+
   808.7 5  8+      327.3 3 
  100
[E2]
   481.4
6+
  1209.1 6  10+      400.4 3 
  100
[E2]
   808.7
8+
  1675.5 6  12+ 1.9 ps    466.4 3 
  100
[E2]
  1209.1
10+
  2200.8 7  14+ 1.0 ps    525.3 3 
  100
[E2]
  1675.5
12+
  2777.3 8  16+ 0.69 ps    576.5 3 
  100
[E2]
  2200.8
14+
  3399.3 (18+)      619.6 9 ?
  100

  2777.3
16+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=(1-) band, α=0
  1002.83 21  (2-)        
  1128.26 22  (4-)      125.5 3 
   895.04 24 
   18 3 
  100 18 


  1002.83
   233.24
(2-)
4+
  1325.4 4  (6-)      197.2 3 
   843.8
  100
   57


  1128.26
   481.4
(4-)
6+
  1593.7 5  (8-)      268.3 3 
   784.8?
  100
 


  1325.4
   808.7
(6-)
8+
  1931.8 6  (10-)      338.1 3 
  100

  1593.7
(8-)
  2337.4 7  (12-)      405.6 3 
  100

  1931.8
(10-)
  2807.3 7  (14-)      469.9 3 
  100

  2337.4
(12-)
  3337.8 8  (16-)      530.5 3 
  100

  2807.3
(14-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Kπ=(1-) band, α=1
   961.4 5  (1-)        
  1027.68 19  (3-)      794.4 3 
   956.90 21 
  100 7 
   92 22 


   233.24
    70.80
4+
2+
  1162.9 3  (5-)      682?
   929.4 3 
 
  100


   481.4
   233.24
6+
4+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Kπ=(4-) band, α=0
  1297.97 22  (4-) 3.0 µs 3       
  1488.0 4  (6-)      103.8 2 
   190?
  100 50 
    7


  1384.3
  1297.97
(5-)
(4-)
  1746.8 5  (8-)      138.1 2 
   259?
  100 40 
   18


  1608.7
  1488.0
(7-)
(6-)
  2074.6 6  (10-)      172.2 2 
   328
  100 33 
   25


  1902.4
  1746.8
(9-)
(8-)
  2468.0 6  (12-)      204.2 2 
   394
  100 50 
   14


  2263.8
  2074.6
(11-)
(10-)
  2950.3 7  (14-)      258.7 2 
  100

  2691.6
(13-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Kπ=(4-) band, α=1
  1384.3 3  (5-)        
  1608.7 4  (7-)      120.7 2 
   224
  100 50 
    8


  1488.0
  1384.3
(6-)
(5-)
  1902.4 5  (9-)      155.6 2 
   293
  100 29 
   71


  1746.8
  1608.7
(8-)
(7-)
  2263.8 6  (11-)      189.2 2 
   361?
  100 50 
   56


  2074.6
  1902.4
(10-)
(9-)
  2691.6 7  (13-)      223.5 2 
   428
  100 40 
  100


  2468.0
  2263.8
(12-)
(11-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    70.80 2+ 7.7 ns 20      70.8 1 [E2]7.79B(E2)(W.u.)=95 25, α=7.79, α(K)=2.96 5, α(L)=3.76 6, α(M)=0.861 14, α(N)=0.186 3, α(O)=0.0235 4, α(P)=0.0001258 18
   233.24 4+      162.4 1 [E2]0.398α=0.398, α(K)=0.279 4, α(L)=0.0931 14, α(M)=0.0209 3, α(N)=0.00454 7, α(O)=0.000607 9, α(P)=1.353×10-5 19
   481.4 6+      248.4 3 [E2]0.0957α=0.0957, α(K)=0.0738 11, α(L)=0.0172 3, α(M)=0.00379 6, α(N)=0.000830 13, α(O)=0.0001150 17, α(P)=3.92×10-6 6
   808.7 8+      327.3 3 [E2]0.0400α=0.0400, α(K)=0.0320 5, α(L)=0.00630 9, α(M)=0.001375 20, α(N)=0.000303 5, α(O)=4.29×10-5 7, α(P)=1.78E-6 3
  1209.1 10+      400.4 3 [E2]0.0219α=0.0219, α(K)=0.0179 3, α(L)=0.00319 5, α(M)=0.000692 10, α(N)=0.0001528 22, α(O)=2.20×10-5 4, α(P)=1.023E-6 15
  1297.97 (4-) 3.0 µs 3     134.8 3 [M1+E2]0.68α=0.68 8, α(K)=0.506 13, α(L)=0.138 67, α(M)=0.031 16, α(N)=0.0067 34, α(O)=9.2×10-4 41, α(P)=2.8E-5 6
(4-) 3.0 µs 3     169.8 3 [M1+E2]0.330α=0.330 13, α(K)=0.257 15, α(L)=0.057 20, α(M)=0.0126 47, α(N)=0.0028 10, α(O)=3.9×10-4 12, α(P)=1.5E-5 3
(4-) 3.0 µs 3     270.3 3 [M1+E2]0.081α=0.081 9, α(K)=0.067 10, α(L)=0.0115 11, α(M)=0.0025 3, α(N)=0.00055 6, α(O)=8.0×10-5 5, α(P)=4.0E-6 10
(4-) 3.0 µs 3     295.3 3 [E2]0.0550α=0.0550, α(K)=0.0435 7, α(L)=0.00907 14, α(M)=0.00199 3, α(N)=0.000437 7, α(O)=6.14×10-5 9, α(P)=2.38E-6 4
  1675.5 12+ 1.9 ps    466.4 3 [E2]0.01423B(E2)(W.u.)=2.7×102, α=0.01423, α(K)=0.01173 17, α(L)=0.00197 3, α(M)=0.000425 6, α(N)=9.40E-5 14, α(O)=1.366E-5 20, α(P)=6.83E-7 10
  2200.8 14+ 1.0 ps    525.3 3 [E2]0.01032B(E2)(W.u.)=2.9×102, α=0.01032, α(K)=0.00857 12, α(L)=0.001378 20, α(M)=0.000296 5, α(N)=6.57E-5 10, α(O)=9.61E-6 14, α(P)=5.04E-7 7
  2777.3 16+ 0.69 ps    576.5 3 [E2]0.00810B(E2)(W.u.)=2.6×102, α=0.00810, α(K)=0.00676 10, α(L)=0.001054 15, α(M)=0.000226 4, α(N)=5.02E-5 7, α(O)=7.38E-6 11, α(P)=4.01E-7 6

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 25.9 s 2 
% β- = 100
E(level): Kπ=0+ band.
    70.802+ 7.7 ns 20  E(level): Kπ=0+ band.
   233.244+   E(level): Kπ=0+ band.
   481.46+   E(level): Kπ=0+ band.
   808.78+   E(level): Kπ=0+ band.
   961.4(1-)   E(level): Kπ=(1-) band, α=1.
  1002.83(2-)   E(level): Kπ=(1-) band, α=0.
  1027.68(3-)   E(level): Kπ=(1-) band, α=1.
  1128.26(4-)   E(level): Kπ=(1-) band, α=0.
  1162.9(5-)   E(level): Kπ=(1-) band, α=1.
  1209.110+   E(level): Kπ=0+ band.
  1297.97(4-) 3.0 µs 3  Dominant configuration=ν5/2[642]~#ν3/2[521] (2009Si21, (n,Fγ)).
E(level): Kπ=(4-) band, α=0.
  1325.4(6-)   E(level): Kπ=(1-) band, α=0.
  1384.3(5-)   E(level): Kπ=(4-) band, α=1.
  1488.0(6-)   E(level): Kπ=(4-) band, α=0.
  1593.7(8-)   E(level): Kπ=(1-) band, α=0.
  1608.7(7-)   E(level): Kπ=(4-) band, α=1.
  1675.512+ 1.9 ps E(level): Kπ=0+ band.
  1746.8(8-)   E(level): Kπ=(4-) band, α=0.
  1902.4(9-)   E(level): Kπ=(4-) band, α=1.
  1931.8(10-)   E(level): Kπ=(1-) band, α=0.
  2074.6(10-)   E(level): Kπ=(4-) band, α=0.
  2200.814+ 1.0 ps E(level): Kπ=0+ band.
  2263.8(11-)   E(level): Kπ=(4-) band, α=1.
  2337.4(12-)   E(level): Kπ=(1-) band, α=0.
E(level)Jπ(level)T1/2(level)Comments
  2468.0(12-)   E(level): Kπ=(4-) band, α=0.
  2691.6(13-)   E(level): Kπ=(4-) band, α=1.
  2777.316+ 0.69 ps E(level): Kπ=0+ band.
  2807.3(14-)   E(level): Kπ=(1-) band, α=0.
  2950.3(14-)   E(level): Kπ=(4-) band, α=0.
  3337.8(16-)   E(level): Kπ=(1-) band, α=0.
  3399.3(18+)   E(level): Kπ=0+ band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    70.80    70.8E(γ): from 154Pr β- decay. Others: 70.8 1 from 252Cf,248Cm SF decay and 70.8 3 from (n,Fγ)
   233.24   162.4E(γ): from 154Pr β- decay. Others: 162.4 1 from 252Cf,248Cm SF decay and 162.4 3 from (n,Fγ)
   481.4   248.4E(γ): from (n,Fγ). Other: 248.6 from 252Cf,248Cm SF decay
   808.7   327.3E(γ): from (n,Fγ). Other: 328.2 from 252Cf,248Cm SF decay
   961.4   891.2E(γ): from 154Pr β- decay
   961.8E(γ): from 154Pr β- decay
  1002.83   932.11E(γ): weighted average of 932.3 4 from 154Pr β- decay and 932.0 3 from (n,Fγ). Other: 931.8 (252Cf,248Cm SF decay)
  1027.68   794.4E(γ): weighted average of 794.3 4 from 154Pr β- decay and 794.5 3 from (n,Fγ)
I(γ): weighted average of 100 7 from 154Pr β- decay and 100 23 from (n,Fγ)
   956.90E(γ): weighted average of 956.9 3 from 154Pr β- decay and 956.9 3 from (n,Fγ)
I(γ): weighted average of 91 30 from 154Pr β- decay and 92 31 from (n,Fγ)
  1128.26   125.5E(γ): from (n,Fγ). Other: 125.8 from 252Cf,248Cm SF decay
I(γ): from (n,Fγ)
   895.04E(γ): weighted average of 895.1 4 from 154Pr β- decay and 895.0 3 from (n,Fγ)
I(γ): from (n,Fγ)
  1162.9   682I(γ): from (n,Fγ)
  1325.4   197.2E(γ): from (n,Fγ). Other: 197.5 from 252Cf,248Cm SF decay
I(γ): from 252Cf,248Cm SF decay
  1593.7   268.3E(γ): from (n,Fγ). Other: 268.5 from 252Cf,248Cm SF decay
I(γ): from 252Cf,248Cm SF decay
   784.8E(γ): from 252Cf,248Cm SF decay
  1675.5   466.4E(γ): from (n,Fγ). Other: 466.5 from 252Cf,248Cm SF decay
  1931.8   338.1E(γ): from (n,Fγ). Other: 338.3 from 252Cf,248Cm SF decay
  2200.8   525.3E(γ): from (n,Fγ). Other: 525.1 from 252Cf,248Cm SF decay
  2337.4   405.6E(γ): from (n,Fγ). Other: 405.8 from 252Cf,248Cm SF decay
  2777.3   576.5E(γ): from (n,Fγ). Other: 576.6 from 252Cf,248Cm SF decay
  2807.3   469.9E(γ): from (n,Fγ). Other: 470.0 from 252Cf,248Cm SF decay
  3337.8   530.5E(γ): from (n,Fγ). Other: 530.7 from 252Cf,248Cm SF decay
  3399.3   619.6E(γ): from (n,Fγ). Other: 620.4 from 252Cf,248Cm SF decay

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