ADOPTED LEVELS, GAMMAS for 156Tb

Author: C. W. Reich |  Citation: Nucl. Data Sheets 113, 2537 (2012) |  Cutoff date: 1-Mar-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=438 keV 4S(n)= 6912 keV 10S(p)= 5310 keV 4Q(α)= 373 keV 4
S(2n)= 1.608×104 keV 10S(2p)= 12931 keV 4Q(EC)= 2444 keV 4
Reference: 2017WA10

References:
  A  150Nd(11B,5nγ),124Sn(36S,p3nγ)  B  155Gd(3He,d),(α,t)
  C  156Tb IT decay (5.3 H)  D  156Tb IT decay (24.4 H)

General Comments:

Data are from 24H and 5H IT decays (1970To11, 1957Mi01, and 1955Ha52) for three levels below 100 keV; from single-particle transfer (1974ElZW) for five levels below 300 keV; and from the 150Nd(11B,5nγ) reaction (1982Be46).

Other studies of possible interest:

Coulomb displacement energies for 156Gd - 156Tb: 1983Ja03

Model calculations of μ and Q: 1978Ko15

α survey of the features of the nuclear structure of the low-lying states of the odd-odd deformed nuclides is given by 1998Ja07.

α survey of the properties of K=0 bands in strongly deformed nuclides is given by 1988Fr16.

Numerous discussions of signature inversion in the (νi13/2)(πh11/2) band in 156Tb as well as in a number of other odd-odd nuclides have been published. See, e.g., 1992Ja03, 1994Yo02, 1994Yo03, 1995Li40, 1996Go19, 1997Zh13, 2001Zh16, 2001Ri19, 2003Ya19.

Gammas: Unplaced γ’s are not included here; see the heavy-ion-induced reaction data set.










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0.0ABCD 3- 5.35 d 10 
% ε = 100
     
     49.630 10 A  D 4+ 49 ns 7      49.630 10 
   100
E1
      0.0
3-
     49.630+X   D (7-) 24.4 h 10 
% IT = 100
     
     87 B   4-        
     88.4  C  (0+) 5.3 h 2 
% ε > 0
% IT < 100
    88.4
   100
E3
      0.0
3-
    100 B   1-        
    109.7A    5+       59.97
   100
D
     49.630
4+
    156 B   2-        
    183.5A    6+       73.95
   133.94
   100
    31
D

    109.7
     49.630
5+
4+
    188 B   3-        
    222 B          
    245 B          
    281.9A    7+       98.50
   172.10
   100
   ≤96
D

    183.5
    109.7
6+
5+
    290 B   4-        
    313 B          
    378.9AB   6(-)      269.26
   100
D
    109.7
5+
    393.6A    8+      111.62
   210.14
   100
    90
D
Q
    281.9
    183.5
7+
6+
    405 B          
    442.0A    7(-)       63.0
   258.48
    79
   100
D
D
    378.9
    183.5
6(-)
6+
    483 B          
    530.6A    9+      137.02
   248.6
    94
   100
D
Q
    393.6
    281.9
8+
7+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
    546.6A    8(-)      104.61
   100
D
    442.0
7(-)
    550 B          
    590 B          
    615 B          
    638 B          
    646.8A    9(-)      100.21
   204.80
   100
    40
D
Q
    546.6
    442.0
8(-)
7(-)
    686.2A    10+      155.64
   292.74
    81
   100
D
Q
    530.6
    393.6
9+
8+
    695 B          
    754 B          
    790 B          
    800.0A    10(-)      153.22
   253.51
   100
    60
D
Q
    646.8
    546.6
9(-)
8(-)
    858.2A    11+      172.10
   327.39
   ≤91
   100

Q
    686.2
    530.6
10+
9+
    954.5A    11(-)      154.40
   307.65
   100
   100
D
Q
    800.0
    646.8
10(-)
9(-)
   1060.4A    12+      202.27
   374.2
    55
   100

Q
    858.2
    686.2
11+
10+
   1146.9A    12(-)      192.50
   347.06
    71
   100
D

    954.5
    800.0
11(-)
10(-)
   1263.3A    13+      203.00
   405.1
    35
   100

Q
   1060.4
    858.2
12+
11+
   1366.8A    13(-)      219.88
   412.1
    37
   100
D
Q
   1146.9
    954.5
12(-)
11(-)
   1510.6A    14+      247.3
   450.3
    22
   100

Q
   1263.3
   1060.4
13+
12+
   1584.3A    14(-)      217.46
   437.5
    26
   100
D

   1366.8
   1146.9
13(-)
12(-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   1741.4A    15+      230.8
   478.0
    25
   100

Q
   1510.6
   1263.3
14+
13+
   1873.9A    15(-)      289.74
   507.0
    23
   100
D
Q
   1584.3
   1366.8
14(-)
13(-)
   2029.6A    16+     ≈288
   519.0
     8
  <100


   1741.4
   1510.6
15+
14+
   2103.2A    16(-)      229.15
   519.0
   ≤83
  <100
D

   1873.9
   1584.3
15(-)
14(-)
   2285.9A    17+      256
   544.7
    32
   100

Q
   2029.6
   1741.4
16+
15+
   2461.5A    17(-)      358.4
   587.6
    54
   100

Q
   2103.2
   1873.9
16(-)
15(-)
   2609.9A    18+      580.3
   100
Q
   2029.6
16+
   2694.2A    18(-)      232.6
   591.0
   ≥15
   100
D
Q
   2461.5
   2103.2
17(-)
16(-)
   2890.5A    19+      604.6
   100

   2285.9
17+
   3114.5A    19(-)      420.2
   653.1
    30
   100


   2694.2
   2461.5
18(-)
17(-)
   3243.7A    20+      633.8
   100
Q
   2609.9
18+
   3345.7A    20(-)      651.5
   100

   2694.2
18(-)
   3548.4A    21+      657.9
   100

   2890.5
19+
   3815A    21(-)      700
   100

   3114.5
19(-)
   4049A    22(-)      703
   100

   3345.7
20(-)
   4255?A    (23+)      707?
   100

   3548.4
21+
   4556A    23(-)      741
   100

   3815
21(-)
   4794A    24(-)      745
   100

   4049
22(-)
   5579A    (26-)      785
   100

   4794
24(-)
   6407A    (28-)      828
   100

   5579
(26-)
   7280A    (30-)      873
   100

   6407
(28-)
   8198A    (32-)      918
   100

   7280
(30-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   9159A    (34-)      961
   100

   8198
(32-)
  10160A    (36-)     1001
   100

   9159
(34-)
  11204A    (38-)     1044
   100

  10160
(36-)
  12293A    (40-)     1089
   100

  11204
(38-)
  13435A    (42-)     1142
   100

  12293
(40-)
  14638A    (44-)     1203
   100

  13435
(42-)
  15907A    (46-)     1269
   100

  14638
(44-)

E(level): From unweighted least-squares fit to γ energies.

Jπ(level): Specific arguments are given for the levels below 300 keV. Above this energy, the assignments are entirely from the heavy-ion data set. These depend on the γ multipolarities and the band-structure considerations customarily employed in such studies.

M(γ): Specific multipolarities are from ce studies of the isomeric decays (1970To11,1957Mi67,1957Mi01) and d or Q assignments are from γ(θ) in the heavy-ion study, as interpreted by the evaluator.

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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=3- Band, conf=π3/2[411]+ν3/2[521].
      0.0 3- 5.35 d 10 
% ε = 100
     
     87 4-     
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower
     49.630 10  4+ 49 ns 7       
    183.5 6+       73.95
   133.94
   100
    31
D

    109.7
     49.630
5+
4+
    393.6 8+        
    686.2 10+        
   1060.4 12+      202.27
   374.2
    55
   100

Q
    858.2
    686.2
11+
10+
   1510.6 14+        
   2029.6 16+     ≈288
   519.0
     8
  <100


   1741.4
   1510.6
15+
14+
   2609.9 18+        
   3243.7 20+      633.8
   100
Q
   2609.9
18+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower
    109.7 5+        
    281.9 7+       98.50
   172.10
   100
   ≤96
D

    183.5
    109.7
6+
5+
    530.6 9+        
    858.2 11+        
   1263.3 13+      203.00
   405.1
    35
   100

Q
   1060.4
    858.2
12+
11+
   1741.4 15+        
   2285.9 17+      256
   544.7
    32
   100

Q
   2029.6
   1741.4
16+
15+
   2890.5 19+        
   3548.4 21+      657.9
   100

   2890.5
19+
   4255 (23+)        
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Probable (νi13/2)(πh11/2) band, α=0. At the lower
    378.9 6(-)        
    546.6 8(-)      104.61
   100
D
    442.0
7(-)
    800.0 10(-)        
   1146.9 12(-)        
   1584.3 14(-)      217.46
   437.5
    26
   100
D

   1366.8
   1146.9
13(-)
12(-)
   2103.2 16(-)        
   2694.2 18(-)      232.6
   591.0
   ≥15
   100
D
Q
   2461.5
   2103.2
17(-)
16(-)
   3345.7 20(-)        
   4049 22(-)      703
   100

   3345.7
20(-)
   4794 24(-)        
   5579 (26-)        
   6407 (28-)        
   7280 (30-)      873
   100

   6407
(28-)
   8198 (32-)        
   9159 (34-)        
  10160 (36-)     1001
   100

   9159
(34-)
  11204 (38-)     1044
   100

  10160
(36-)
  12293 (40-)        
  13435 (42-)     1142
   100

  12293
(40-)
  14638 (44-)        
  15907 (46-)     1269
   100

  14638
(44-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Probable (νi13/2)(πh11/2) band, α=1. At the lower
    442.0 7(-)        
    646.8 9(-)      100.21
   204.80
   100
    40
D
Q
    546.6
    442.0
8(-)
7(-)
    954.5 11(-)        
   1366.8 13(-)        
   1873.9 15(-)      289.74
   507.0
    23
   100
D
Q
   1584.3
   1366.8
14(-)
13(-)
   2461.5 17(-)        
   3114.5 19(-)      420.2
   653.1
    30
   100


   2694.2
   2461.5
18(-)
17(-)
   3815 21(-)        
   4556 23(-)      741
   100

   3815
21(-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - Kπ=7- Bandhead, conf=π3/2[411]+ν11/2[505].
     49.630+X (7-) 24.4 h 10 
% IT = 100
     
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 7 - Kπ=0+ Bandhead, conf=π3/2[411]-ν3/2[402].
     88.4 (0+) 5.3 h 2 
% ε > 0
% IT < 100 		     
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 8 - Kπ=0- Band, conf=π3/2[411]-ν3/2[521].
    100 1-        
    156 2-     
    188 3-        
    290 4-        

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
     49.630 4+ 49 ns 7      49.630 10 E10.357B(E1)(W.u.)=2.9E-5 4, α=0.357
     88.4 (0+) 5.3 h 2 
% ε > 0
% IT < 100
    88.4E386.2α=86.2

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.03- 5.35 d 10 
% ε = 100
Q=+2.3 8, μ=1.41 18
E(level): Kπ=3- Band, conf=π3/2[411]+ν3/2[521].
     49.6304+ 49 ns 7  E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
     49.630+X(7-) 24.4 h 10 
% IT = 100
E(level): Kπ=7- Bandhead, conf=π3/2[411]+ν11/2[505].
     874-   E(level): Kπ=3- Band, conf=π3/2[411]+ν3/2[521].
Jπ(level): From comparison of the measured (3He,d) and (α,t) cross sections with those predicted for the members of the band having the proposed configuration, together with the expected energy spacings (1974ElZW).
     88.4(0+) 5.3 h 2 
% ε > 0
% IT < 100
E(level): Kπ=0+ Bandhead, conf=π3/2[411]-ν3/2[402].
    1001-   E(level): Kπ=0- Band, conf=π3/2[411]-ν3/2[521].
Jπ(level): From comparison of the measured (3He,d) and (α,t) cross sections with those predicted for the members of the band having the proposed configuration, together with the expected energy spacings (1974ElZW).
    109.75+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
    1562-   E(level): Kπ=0- Band, conf=π3/2[411]-ν3/2[521].
Jπ(level): From comparison of the measured (3He,d) and (α,t) cross sections with those predicted for the members of the band having the proposed configuration, together with the expected energy spacings (1974ElZW).
    183.56+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
    1883-   E(level): Kπ=0- Band, conf=π3/2[411]-ν3/2[521].
Jπ(level): From comparison of the measured (3He,d) and (α,t) cross sections with those predicted for the members of the band having the proposed configuration, together with the expected energy spacings (1974ElZW).
    281.97+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
    2904-   E(level): Kπ=0- Band, conf=π3/2[411]-ν3/2[521].
Jπ(level): From comparison of the measured (3He,d) and (α,t) cross sections with those predicted for the members of the band having the proposed configuration, together with the expected energy spacings (1974ElZW).
    378.96(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
    393.68+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
    442.07(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
    530.69+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
    546.68(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
    646.89(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
    686.210+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
    800.010(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
    858.211+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
    954.511(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   1060.412+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
   1146.912(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   1263.313+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
E(level)Jπ(level)T1/2(level)Comments
   1366.813(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   1510.614+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
   1584.314(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   1741.415+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
   1873.915(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   2029.616+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
   2103.216(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   2285.917+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
   2461.517(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   2609.918+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
   2694.218(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   2890.519+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
   3114.519(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   3243.720+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=0. At the lower.
   3345.720(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   3548.421+   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
   381521(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   404922(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   4255(23+)   E(level): Kπ=4+ Band, (π3/2[411])(νi13/2), α=1. At the lower.
   455623(-)   E(level): Probable (νi13/2)(πh11/2) band, α=1. At the lower.
   479424(-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   5579(26-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   6407(28-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   7280(30-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
   8198(32-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
E(level)Jπ(level)T1/2(level)Comments
   9159(34-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  10160(36-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  11204(38-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  12293(40-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  13435(42-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  14638(44-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.
  15907(46-)   E(level): Probable (νi13/2)(πh11/2) band, α=0. At the lower.

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Additional Gamma Comments:

E(level)E(gamma)Comments
     49.630     49.630M(γ): From L-subshell ratios in 156Tb IT decay (24.4 h).
     88.4     88.4M(γ): Assignment based on K/L2/L3/M/n data from 156Tb IT decay (5.3 h).
    281.9    172.10E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
    858.2    172.10E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   2029.6    519.0E(γ): Multiply placed
   2103.2    519.0E(γ): Multiply placed

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