ADOPTED LEVELS, GAMMAS for 161Er

Author: C. W. Reich |  Citation: Nucl. Data Sheets 112,2497 (2011) |  Cutoff date: 1-Jun-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-3.30×103 keV 3S(n)= 7.21×103 keV 3S(p)= 6108 keV 18Q(α)= 1798 keV 11
Reference: 2012WA38

References:
  A  (HI,xnγ)  B  161Tm ε decay
  C  162Er(d,t)  D  161Er IT decay (7.5 μs)
  E  160Dy(α,3nγ) 

General Comments:

Data are primarily from 161Tm ε decay and in-beam studies with additions from (d,t) study and 161Er IT decay (7.5 μs).

Levels: Calculations of mixing of the wave functions for first few levels of rotational bands are given by 1995Dz02. For the levels assigned here, the calculated wave functions are all quite pure (i.e., |> 90% the assigned state).

Levels: band(a) 3/2[521] band, α=+1/2. See the comment for the α=-1/2 branch.

Levels: band(c) Coriolis-mixed +π band, α=-1/2.

Levels: band(e) 11/2[505] band, α=+1/2.

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

Q-value: 2003Au03 report the following: for Q(β-), 3310 29; for S(n), 7222 26; for S(p), 6110 18; and, for Q(α), 1794 11.










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
      0ABCDE 3/2- 3.21 h 3 
% ε = 100
     
     59.501 24 AB DE 5/2- ≤ 0.15 ns     59.51 3 
   100
M1+E2
      0
3/2-
    143.89 3 ABCDE 7/2- ≤ 0.18 ns     84.40 3 
   143.92 8 
   100
    40
M1+E2
E2
     59.501
      0
5/2-
3/2-
    172.06 3  BC E 5/2- 0.35 ns 10      28.18 3 
   112.56 3 
   172.05 6 
 
    60 5 
   100 8 
M1+E2
M1+E2
M1+E2
    143.89
     59.501
      0
7/2-
5/2-
3/2-
    189.42 3 ABCDE 9/2+ 84 ns 10      45.54 3 
   100
E1
    143.89
7/2-
    212.91 3  B    5/2+ 0.81 ns 6      23.49 2 
    40.86 3 
    69.00 10 
   153.37 8 
   212.88 8 
 
 
    11 2 
    95 8 
   100 9 
E2
E1
[E1]
E1
E1
    189.42
    172.06
    143.89
     59.501
      0
9/2+
5/2-
7/2-
5/2-
3/2-
    217.34 4  B    7/2+ 0.55 ns 5      27.92 3 
    73.48 3 
   157.80 8 
 
     8 3 
   100 9 
M1+E2
E1
E1
    189.42
    143.89
     59.501
9/2+
7/2-
5/2-
    249.77 3 ABCDE 9/2-      105.88 2 
   190.24 6 
   100 9 
   100 9 
M1+E2
E2
    143.89
     59.501
7/2-
5/2-
    266.44 3  BC E 7/2- 0.21 ns 3      16.70 5 
    94.38 3 
   122.55 5 
   206.95 5 
   266.32 10 
 
    80 29 
   100 8 
    39 12 
    43 5 
M1+E2
M1+E2
M1+E2
M1+E2
E2
    249.77
    172.06
    143.89
     59.501
      0
9/2-
5/2-
7/2-
5/2-
3/2-
    267.45 4 AB DE 13/2+ 2.0 ns 2      78.07 4 
   100
E2
    189.42
9/2+
    296.69 4 AB DE 11/2+       29.26 2 
    46.86 5 
    79.35 4 
   107.22 5 
 
 
    29 10 
   100 14 
M1+E2
E1
E2
M1+E2
    267.45
    249.77
    217.34
    189.42
13/2+
9/2-
7/2+
9/2+
    369.48 5  BC   3/2+      156.52 8 
   197.38 8 
   310.1 1 
   369.5 1 
    51 5 
     9 4 
    21 3 
   100 9 
M1+E2
(E1)
E1
E1
    212.91
    172.06
     59.501
      0
5/2+
5/2-
5/2-
3/2-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    388.46 6 ABC E 11/2-      138.68 7 
   244.57 8 
    55 6 
   100 10 
M1+E2
E2
    249.77
    143.89
9/2-
7/2-
    390.20 4  B  E 9/2-      123.80 6 
   140.40 7 
   172.92 7 
   200.75 5 
   218.10 6 
   246.2 3 
    33 10 
    40 6 
    52 14 
    79 17 
   100 10 
   ≤10
M1+E2
M1+E2
(E1)
E1
E2
(M1)
    266.44
    249.77
    217.34
    189.42
    172.06
    143.89
7/2-
9/2-
7/2+
9/2+
5/2-
7/2-
    396.44 4 ABCDE 11/2- 7.5 µs 7 
% IT = 100
    99.76 4 
   128.90 7 
   146.65 8 
   207.12 6 
   252.50 10 
    49 5 
    61 5 
   100 7 
    49 6 
    32 3 
E1
E1
M1+E2
E1
E2
    296.69
    267.45
    249.77
    189.42
    143.89
11/2+
13/2+
9/2-
9/2+
7/2-
    463.11 9  BC   3/2+      250.2 1 
   403.5 2 
   463.6 4 
   100 11 
    23 4 
    55 7 
M1

E1
    212.91
     59.501
      0
5/2+
5/2-
3/2-
    466.2 1 A   E 17/2+      198.7 1 
   100
Q
    267.45
13/2+
    481  C   1/2+        
    496.28 8  BC   5/2+      278.90 10 
   283.4 1 
   436.8 6 
   496.3 5 
    98 12 
   100 12 
    18 6 
    12 5 
M1
M1+E2


    217.34
    212.91
     59.501
      0
7/2+
5/2+
5/2-
3/2-
    508.85 10 A   E 15/2+      212.2 1 
   241.3 3 
   100 5 
    51 8 
Q
D
    296.69
    267.45
11/2+
13/2+
    522  C          
    531.11 23 A   E 13/2-      142.5 5 
   281.3 3 
    17 5 
   100 15 

Q
    388.46
    249.77
11/2-
9/2-
    540  C   (11/2-)        
    563  C          
    578.5 3 A   E 13/2-      182.1 3 
   100
D
    396.44
11/2-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    590.06 12  BC   7/2+      372.6 2 
   377.1 2 
   400.8 2 
   100 10 
    47 6 
    68 8 
M1
M1
M1
    217.34
    212.91
    189.42
7/2+
5/2+
9/2+
    621  C          
    635  C          
    665  C          
    704  C          
    712  C          
    724.84 20  BC   (3/2-)      458.3 6 
   552.9 5 
   581.0 5 
   665.2 5 
   724.8 5 
    32 12 
    37 9 
    26 9 
    32 11 
   100 12 





    266.44
    172.06
    143.89
     59.501
      0
7/2-
5/2-
7/2-
5/2-
3/2-
    726.0 4 A     15/2-      337.5 5 
   100
Q
    388.46
11/2-
    738  C          
    782.5 4 A   E 15/2-      204.0 3 
   386.0 5 
   100 16 
    40 12 
D
(Q)
    578.5
    396.44
13/2-
11/2-
    783.5 1 A   E 21/2+      317.4 1 
   100
Q
    466.2
17/2+
    843.16 21  BC   (5/2-)      577.0 5 
   593.7 5 
   670.6 5 
   699.0 5 
   784.1 5 
   842.9 5 
    26 10 
    67 19 
    48 17 
    60 26 
   100 14 
    48 12 






    266.44
    249.77
    172.06
    143.89
     59.501
      0
7/2-
9/2-
5/2-
7/2-
5/2-
3/2-
    848.93 13 A   E 19/2+      340.1 1 
   382.5 3 
   100 5 
    26 4 
Q
D
    508.85
    466.2
15/2+
17/2+
    891.6 4 A     17/2-      165.5 5 
   360.3 3 
   382.8 5 
     7 2 
   100
    11.2 2 

[E2]
[E1]
    726.0
    531.11
    508.85
15/2-
13/2-
15/2+
   1006.7 5 A   E 17/2-      224.1 5 
   428.2 5 
   100 29 
    81 26 
D

    782.5
    578.5
15/2-
13/2-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   1135.6 4 A     19/2-      409.5 5 
   100

    726.0
15/2-
   1208.6 2 A   E 25/2+      425.0 1 
   100
Q
    783.5
21/2+
   1249.5 5 A   E 19/2-      242.7 5 
   467.1 5 
    72 21 
   100 31 
D

   1006.7
    782.5
17/2-
15/2-
   1301.85 15 A     23/2+      452.9 1 
   518.5 3 
   100 5 
    22 3 
Q

    848.93
    783.5
19/2+
21/2+
   1312.7 3 A     21/2-      177.0 5 
   421.2 3 
   464.0 5 
     5 2 
   100
    17.1 6 

[E2]
[E1]
   1135.6
    891.6
    848.93
19/2-
17/2-
19/2+
   1481.20 19 ? B    (5/2,7/2-)      891.0 5 
   984.5 5 
  1215.0 7 
  1268.3 5 
  1308.5 5 
  1337.8 5 
  1422.1 5 
  1481.5 7 
    38 17 
    69 17 
    24 14 
    36 17 
   100 14 
    43 21 
   ≤43
    29 14 








    590.06
    496.28
    266.44
    212.91
    172.06
    143.89
     59.501
      0
7/2+
5/2+
7/2-
5/2+
5/2-
7/2-
5/2-
3/2-
   1509.1 6 A   E 21/2-      259.7 5 
   502.3 5 
    36 12 
   100 32 


   1249.5
   1006.7
19/2-
17/2-
   1589.7 4 A     23/2-      454.1 5 
   806.3 5 
   100
    71 20 
[E2]
[E1]
   1135.6
    783.5
19/2-
21/2+
   1727.1 2 A   E 29/2+      518.5 1 
   100
Q
   1208.6
25/2+
   1772.2 3 A     25/2-      459.6 3 
   470.5 5 
   100
    19.1 4 
[E2]
[E1]
   1312.7
   1301.85
21/2-
23/2+
   1783.6 6 A     23/2-      274.5 5 
   534.2 5 
    53 13 
   100 33 


   1509.1
   1249.5
21/2-
19/2-
   1849.9 3 A     27/2+      548.1 3 
   641.2 5 
   100 15 
     8.5 25 
Q
D
   1301.85
   1208.6
23/2+
25/2+
   1960.25 17  B    (7/2-)     1235.7 4 
  1569.9 5 
  1693.5 4 
  1743.8 5 
  1748.0 5 
  1769.5 6 
  1788.0 3 
    23 2 
    25 3 
    24 3 
    10 3 
    12 3 
    10 3 
   100 9 







    724.84
    390.20
    266.44
    217.34
    212.91
    189.42
    172.06
(3/2-)
9/2-
7/2-
7/2+
5/2+
9/2+
5/2-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   2044.6 3  B    9/2+     1648.1 3 
   100

    396.44
11/2-
   2063.09 21 ? B    (5/2+,7/2)     1796.0 8 
  1845.7 4 
  1850.0 3 
  1873.4 7 
  1891.9 5 
    ≤8
   100 10 
  ≤256
    15 8 
    62 15 





    266.44
    217.34
    212.91
    189.42
    172.06
7/2-
7/2+
5/2+
9/2+
5/2-
   2063.2 4 A     27/2-      473.5 5 
   854.5 5 
    63 27 
   100
[E2]
[E1]
   1589.7
   1208.6
23/2-
25/2+
   2066.89 17 ? B    (5/2,7/2-)     1341.5 5 
  1800.0 5 
  1850.0 3 
  1854.7 4 
  1894.1 4 
  1922.8 5 
  2007.1 6 
  2067.1 9 
    29 9 
    18 4 
  ≤201
   100 10 
    87 10 
   ≤12
    13 5 
    ≤7








    724.84
    266.44
    217.34
    212.91
    172.06
    143.89
     59.501
      0
(3/2-)
7/2-
7/2+
5/2+
5/2-
7/2-
5/2-
3/2-
   2071.2 6 A     25/2-      287.4 5 
   562.0 5 
    38 12 
   100 31 
D

   1783.6
   1509.1
23/2-
21/2-
   2256.7 4 A     29/2-      406.7 5 
   484.4 3 
    19.3 6 
   100
[E1]
[E2]
   1849.9
   1772.2
27/2+
25/2-
   2325.96 22 A     33/2+      598.9 1 
   100
Q
   1727.1
29/2+
   2369.0 7 A     27/2-      297.5 5 
   585.6 5 
    21 5 
  ≈100
D

   2071.2
   1783.6
25/2-
23/2-
   2477.0 4 A     31/2+      627.1 3 
   100
Q
   1849.9
27/2+
   2548.5 3 A     31/2-      485.3 5 
   821.5 3 
    45 22 
   100
[E2]
[E1]
   2063.2
   1727.1
27/2-
29/2+
   2674.1 8 A     29/2-      305.0 5 ?
   603.0 5 
   ≈24
   100 29 
D
Q
   2369.0
   2071.2
27/2-
25/2-
   2775.4 5 A     33/2-      518.7 3 
   100
Q
   2256.7
29/2-
   2980.1 8 A     31/2-      306.0 5 
   611.0 5 
   ≈83
  ≈100
D

   2674.1
   2369.0
29/2-
27/2-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   2991.36 24 A     37/2+      665.4 1 
   100
Q
   2325.96
33/2+
   3066.9 3 A     35/2-      518.5 3 
   740.9 3 
   100
    95 11 
[E2]
[E1]
   2548.5
   2325.96
31/2-
33/2+
   3169.2 5 A     35/2+      692.2 3 
   100

   2477.0
31/2+
   3345.6 6 A     37/2-      570.2 3 
   100
Q
   2775.4
33/2-
   3565.7 9 A     35/2-      585.6 5 
   100

   2980.1
31/2-
   3645.9 4 A     39/2-      579.0 3 
   654.6 5 
   100
    37.3 31 
[E2]
[E1]
   3066.9
   2991.36
35/2-
37/2+
   3708.3 3 A     41/2+      716.9 1 
   100

   2991.36
37/2+
   3913.3 7 A     39/2+      744.1 5 
   100

   3169.2
35/2+
   3976.4 8 A     41/2-      630.8 5 
   100
Q
   3345.6
37/2-
   4297.7 5 A     43/2-      651.8 3 
   100
(Q)
   3645.9
39/2-
   4461.5 3 A     45/2+      753.2 1 
   100
Q
   3708.3
41/2+
   4670.5 9 A     45/2-      694.1 5 
   100

   3976.4
41/2-
   4691.3 9 A     43/2+      778.0 5 
   100
Q
   3913.3
39/2+
   5020.4 7 A     47/2-      722.7 5 
   100
Q
   4297.7
43/2-
   5246.5 4 A     49/2+      785.0 3 
   100
Q
   4461.5
45/2+
   5427.8 11 A     49/2-      757.3 5 
   100
Q
   4670.5
45/2-
   5808.4 9 A     51/2-      788.0 5 
   100

   5020.4
47/2-
   6076.5 7 A     53/2+      830.0 5 
   100

   5246.5
49/2+
   6243.4 12 A     53/2-      815.6 5 
   100

   5427.8
49/2-
   6656A     (55/2-)      848
   100

   5808.4
51/2-
   6957A     (57/2+)      880
   100

   6076.5
53/2+
   7118A     (57/2-)      875
   100

   6243.4
53/2-
   7557A     (59/2-)      901
   100

   6656
(55/2-)
   7873A     (61/2+)      916
   100

   6957
(57/2+)
   8039A     (61/2-)      921
   100

   7118
(57/2-)
   8499A     (63/2-)      942
   100

   7557
(59/2-)
   8808A     (65/2+)      935
   100

   7873
(61/2+)
   8984A     (65/2-)      945
   100

   8039
(61/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   9458A     (67/2-)      959
   100

   8499
(63/2-)
   9768A     (69/2+)      960
   100

   8808
(65/2+)
   9938A     (69/2-)      954
   100

   8984
(65/2-)
  10431A     (71/2-)      973
   100

   9458
(67/2-)
  10770A     (73/2+)     1002
   100

   9768
(69/2+)
  10921A     (73/2-)      983
   100

   9938
(69/2-)
  11433A     (75/2-)     1002
   100

  10431
(71/2-)
  11824A     (77/2+)     1055
   100

  10770
(73/2+)
  11953A     (77/2-)     1032
   100

  10921
(73/2-)
  12477A     (79/2-)     1044
   100

  11433
(75/2-)
  12934A     (81/2+)     1110
   100

  11824
(77/2+)
  13039A     (81/2-)     1086
   100

  11953
(77/2-)
  13571A     (83/2-)     1094
   100

  12477
(79/2-)
  14104A     (85/2+)     1170
   100

  12934
(81/2+)
  14183A     (85/2-)     1144
   100

  13039
(81/2-)
  14719A     (87/2-)     1148
   100

  13571
(83/2-)
  15339A     (89/2+)     1234
   100

  14104
(85/2+)
  15388A     (89/2-)     1205
   100

  14183
(85/2-)
  15924A     (91/2-)     1205
   100

  14719
(87/2-)
  16636A     (93/2+)     1297
   100

  15339
(89/2+)
  16658A     (93/2-)     1270
   100

  15388
(89/2-)
  17191A     (95/2-)     1267
   100

  15924
(91/2-)
  17991A     (97/2-)     1333
   100

  16658
(93/2-)
  17995A     (97/2+)     1359
   100

  16636
(93/2+)
  18521A     (99/2-)     1330
   100

  17191
(95/2-)
  19384A     (101/2-)     1393
   100

  17991
(97/2-)
  19397A     (101/2-)     1405
   100

  17991
(97/2-)
  19416A     (101/2+)     1421
   100

  17995
(97/2+)
  19916A     (103/2-)     1394
   100

  18521
(99/2-)
  20844A     (105/2-)     1447
  1460
 
 


  19397
  19384
(101/2-)
(101/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  20895A     (105/2+)     1479
   100

  19416
(101/2+)
  21376A     (107/2-)     1460
   100

  19916
(103/2-)
  22364?A     (109/2-)     1521?
   100

  20844
(105/2-)
  22407A     (109/2+)     1512
   100

  20895
(105/2+)
  22901A     (111/2-)     1525
   100

  21376
(107/2-)
  23917?A     (113/2+)     1510?
   100

  22407
(109/2+)
  24487A     (115/2-)     1586
   100

  22901
(111/2-)
  26143?A     (119/2-)     1657?
   100

  24487
(115/2-)

E(level): From least-squares fit to γ-ray energies or from (d,t) study for levels below 6100 keV and from reported level energies above 6600 keV.

Jπ(level): Jπ and band assignments are based on γ multipolarities from 161Tm ε decay and from γ-ray anisotropy ratios in heavy-ion recation studies, agreement of experimental and calculated cross sections from (d,t), and expected rotational-band structure in in-beam studies.

I(γ): In their heavy-ion study, 2011Ch12 place special emphasis on measurement of the E1/E2 branching ratios from selected levels. These are the values listed here. The values obtained from their γ spectrum are also listed for comparison with these specifically measured ones.

M(γ): For levels below 400 keV, multipolarities of the γ rays are from ce data from 161Tm ε decay (both 1975Ad08 and 1980Ab18). For levels above 400 keV, multipolarities are generally from the γ-ray anisotropy-ratio (RADO) data of 2011Ch12 from a heavy-ion study.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - 3/2[521] band, α=-1/2.
      0 3/2- 3.21 h 3 
% ε = 100
     
    143.89 3  7/2- ≤ 0.18 ns     84.40 3 
   143.92 8 
   100
    40
M1+E2
E2
     59.501
      0
5/2-
3/2-
    388.46 6  11/2-      138.68 7 
   244.57 8 
    55 6 
   100 10 
M1+E2
E2
    249.77
    143.89
9/2-
7/2-
    726.0 4  15/2-      337.5 5 
   100
Q
    388.46
11/2-
   1135.6 4  19/2-      409.5 5 
   100

    726.0
15/2-
   1589.7 4  23/2-      454.1 5 
   806.3 5 
   100
    71 20 
[E2]
[E1]
   1135.6
    783.5
19/2-
21/2+
   2063.2 4  27/2-      473.5 5 
   854.5 5 
    63 27 
   100
[E2]
[E1]
   1589.7
   1208.6
23/2-
25/2+
   2548.5 3  31/2-      485.3 5 
   821.5 3 
    45 22 
   100
[E2]
[E1]
   2063.2
   1727.1
27/2-
29/2+
   3066.9 3  35/2-      518.5 3 
   740.9 3 
   100
    95 11 
[E2]
[E1]
   2548.5
   2325.96
31/2-
33/2+
   3645.9 4  39/2-      579.0 3 
   654.6 5 
   100
    37.3 31 
[E2]
[E1]
   3066.9
   2991.36
35/2-
37/2+
   4297.7 5  43/2-      651.8 3 
   100
(Q)
   3645.9
39/2-
   5020.4 7  47/2-      722.7 5 
   100
Q
   4297.7
43/2-
   5808.4 9  51/2-      788.0 5 
   100

   5020.4
47/2-
   6656 (55/2-)      848
   100

   5808.4
51/2-
   7557 (59/2-)      901
   100

   6656
(55/2-)
   8499 (63/2-)      942
   100

   7557
(59/2-)
   9458 (67/2-)      959
   100

   8499
(63/2-)
  10431 (71/2-)        
  11433 (75/2-)     1002
   100

  10431
(71/2-)
  12477 (79/2-)     1044
   100

  11433
(75/2-)
  13571 (83/2-)        
  14719 (87/2-)     1148
   100

  13571
(83/2-)
  15924 (91/2-)        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
  17191 (95/2-)        
  18521 (99/2-)     1330
   100

  17191
(95/2-)
  19916 (103/2-)     1394
   100

  18521
(99/2-)
  21376 (107/2-)        
  22901 (111/2-)        
  24487 (115/2-)        
  26143 (119/2-)        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 5/2[523] band.
    172.06 3  5/2- 0.35 ns 10       
    266.44 3  7/2- 0.21 ns 3      16.70 5 
    94.38 3 
   122.55 5 
   206.95 5 
   266.32 10 
 
    80 29 
   100 8 
    39 12 
    43 5 
M1+E2
M1+E2
M1+E2
M1+E2
E2
    249.77
    172.06
    143.89
     59.501
      0
9/2-
5/2-
7/2-
5/2-
3/2-
    390.20 4  9/2-      123.80 6 
   140.40 7 
   172.92 7 
   200.75 5 
   218.10 6 
   246.2 3 
    33 10 
    40 6 
    52 14 
    79 17 
   100 10 
   ≤10
M1+E2
M1+E2
(E1)
E1
E2
(M1)
    266.44
    249.77
    217.34
    189.42
    172.06
    143.89
7/2-
9/2-
7/2+
9/2+
5/2-
7/2-
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Coriolis-mixed +π band, α=+1/2.
    189.42 3  9/2+ 84 ns 10       
    212.91 3  5/2+ 0.81 ns 6      23.49 2 
    40.86 3 
    69.00 10 
   153.37 8 
   212.88 8 
 
 
    11 2 
    95 8 
   100 9 
E2
E1
[E1]
E1
E1
    189.42
    172.06
    143.89
     59.501
      0
9/2+
5/2-
7/2-
5/2-
3/2-
    267.45 4  13/2+ 2.0 ns 2      78.07 4 
   100
E2
    189.42
9/2+
    466.2 1  17/2+      198.7 1 
   100
Q
    267.45
13/2+
    783.5 1  21/2+      317.4 1 
   100
Q
    466.2
17/2+
   1208.6 2  25/2+      425.0 1 
   100
Q
    783.5
21/2+
   1727.1 2  29/2+      518.5 1 
   100
Q
   1208.6
25/2+
   2325.96 22  33/2+      598.9 1 
   100
Q
   1727.1
29/2+
   2991.36 24  37/2+      665.4 1 
   100
Q
   2325.96
33/2+
   3708.3 3  41/2+      716.9 1 
   100

   2991.36
37/2+
   4461.5 3  45/2+      753.2 1 
   100
Q
   3708.3
41/2+
   5246.5 4  49/2+      785.0 3 
   100
Q
   4461.5
45/2+
   6076.5 7  53/2+      830.0 5 
   100

   5246.5
49/2+
   6957 (57/2+)      880
   100

   6076.5
53/2+
   7873 (61/2+)      916
   100

   6957
(57/2+)
   8808 (65/2+)      935
   100

   7873
(61/2+)
   9768 (69/2+)      960
   100

   8808
(65/2+)
  10770 (73/2+)        
  11824 (77/2+)     1055
   100

  10770
(73/2+)
  12934 (81/2+)     1110
   100

  11824
(77/2+)
  14104 (85/2+)        
  15339 (89/2+)     1234
   100

  14104
(85/2+)
  16636 (93/2+)        
  17995 (97/2+)        
  19416 (101/2+)     1421
   100

  17995
(97/2+)
  20895 (105/2+)     1479
   100

  19416
(101/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
  22407 (109/2+)        
  23917 (113/2+)        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - 3/2[651] bandhead, with 3/2[402] mixture
    369.48 5  3/2+        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - 11/2[505] band, α=-1/2.
    396.44 4  11/2- 7.5 µs 7 
% IT = 100
     
    782.5 4  15/2-      204.0 3 
   386.0 5 
   100 16 
    40 12 
D
(Q)
    578.5
    396.44
13/2-
11/2-
   1249.5 5  19/2-      242.7 5 
   467.1 5 
    72 21 
   100 31 
D

   1006.7
    782.5
17/2-
15/2-
   1783.6 6  23/2-      274.5 5 
   534.2 5 
    53 13 
   100 33 


   1509.1
   1249.5
21/2-
19/2-
   2369.0 7  27/2-      297.5 5 
   585.6 5 
    21 5 
  ≈100
D

   2071.2
   1783.6
25/2-
23/2-
   2980.1 8  31/2-      306.0 5 
   611.0 5 
   ≈83
  ≈100
D

   2674.1
   2369.0
29/2-
27/2-
   3565.7 9  35/2-      585.6 5 
   100

   2980.1
31/2-
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - 3/2[402] band, with 3/2[651] mixture.
    463.11 9  3/2+        
    496.28 8  5/2+      278.90 10 
   283.4 1 
   436.8 6 
   496.3 5 
    98 12 
   100 12 
    18 6 
    12 5 
M1
M1+E2


    217.34
    212.91
     59.501
      0
7/2+
5/2+
5/2-
3/2-
    590.06 12  7/2+      372.6 2 
   377.1 2 
   400.8 2 
   100 10 
    47 6 
    68 8 
M1
M1
M1
    217.34
    212.91
    189.42
7/2+
5/2+
9/2+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 7 - 1/2[400] bandhead
    481 1/2+        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 8 - 3/2[532] bandhead
    724.84 20  (3/2-)        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 9 - 5/2[512] bandhead
    843.16 21  (5/2-)        
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 10 - Possible Kπ=9/2+ bandhead.
   2044.6 3  9/2+        

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
     59.501 5/2- ≤ 0.15 ns     59.51 3 M1+E20.14 12.82B(E2)(W.u.)>1.3×102, B(M1)(W.u.)>0.048, α=12.82
    143.89 7/2- ≤ 0.18 ns     84.40 3 M1+E20.23 4.69B(E2)(W.u.)>1.1×102, B(M1)(W.u.)>0.029, α=4.69
7/2- ≤ 0.18 ns    143.92 8 E2 0.779B(E2)(W.u.)>60, α=0.779
    172.06 5/2- 0.35 ns 10      28.18 3 M1+E20.08 24.1B(E2)(W.u.)=19 7, B(M1)(W.u.)=0.0047 17, α=24.1
5/2- 0.35 ns 10     112.56 3 M1+E20.14 2.03B(E2)(W.u.)=5.6 17, B(M1)(W.u.)=0.0073 23, α=2.03
5/2- 0.35 ns 10     172.05 6 M1+E20.18 0.605B(E2)(W.u.)=1.8 6, B(M1)(W.u.)=0.0033 11, α=0.605
    189.42 9/2+ 84 ns 10      45.54 3 E1 0.495B(E1)(W.u.)=1.93E-5 23, α=0.495
    212.91 5/2+ 0.81 ns 6      23.49 2 E2 2.11×103B(E2)(W.u.)=4.0×102 9, α=2.11E3
5/2+ 0.81 ns 6      40.86 3 E1 0.670B(E1)(W.u.)=0.00017E-4 3, α=0.670
5/2+ 0.81 ns 6      69.00 10 [E1] 0.860B(E1)(W.u.)=2.0E-5 5, α=0.860
5/2+ 0.81 ns 6     153.37 8 E1 0.1045B(E1)(W.u.)=1.57E-5 23, α=0.1045
5/2+ 0.81 ns 6     212.88 8 E1 0.0442B(E1)(W.u.)=6.2E-6 10, α=0.0442
    217.34 7/2+ 0.55 ns 5      27.92 3 M1+E20.10 28.0B(E2)(W.u.)=3.4×102 15, B(M1)(W.u.)=0.053 24, α=28.0
7/2+ 0.55 ns 5      73.48 3 E1 0.731B(E1)(W.u.)=1.1E-5 5, α=0.731
7/2+ 0.55 ns 5     157.80 8 E1 0.0969B(E1)(W.u.)=1.3E-5 4, α=0.0969
    249.77 9/2-      105.88 2 M1+E20.23 2.41α=2.41
9/2-      190.24 6 E2 0.298α=0.298
    266.44 7/2- 0.21 ns 3      16.70 5 M1+E20.06 130.3B(E2)(W.u.)=1.3×102 10, B(M1)(W.u.)=0.021 16, α=130.3 24
7/2- 0.21 ns 3      94.38 3 M1+E22.5 3.62B(E2)(W.u.)=5.8×102 25, B(M1)(W.u.)=0.0017 8, α=3.62
7/2- 0.21 ns 3     122.55 5 M1+E20.20 1.584B(E2)(W.u.)=8.7 22, B(M1)(W.u.)=0.0066 17, α=1.584
7/2- 0.21 ns 3     206.95 5 M1+E20.33 LE0.359B(E2)(W.u.)<0.88, B(M1)(W.u.)>0.00031, α=0.359 9
7/2- 0.21 ns 3     266.32 10 E2 0.0997B(E2)(W.u.)=2.0 6, α=0.0997
    267.45 13/2+ 2.0 ns 2      78.07 4 E2 7.69B(E2)(W.u.)=216 23, α=7.69
    296.69 11/2+       29.26 2 M1+E20.07 20.2α=20.2
11/2+       46.86 5 E1 0.457α=0.457
11/2+       79.35 4 E2 7.21α=7.21
11/2+      107.22 5 M1+E21.2 2.29α=2.29
E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
    369.48 3/2+      156.52 8 M1+E20.36 0.772α=0.772
3/2+      197.38 8 (E1) 0.0538α=0.0538
3/2+      310.1 1 E1 0.0170α=0.0170 8
3/2+      369.5 1 E1 0.0111α=0.0111 8
    388.46 11/2-      138.68 7 M1+E20.23 1.109α=1.109
11/2-      244.57 8 E2 0.1305α=0.1305
    390.20 9/2-      123.80 6 M1+E20.52 1.501α=1.501 22
9/2-      140.40 7 M1+E20.44 1.044α=1.044
9/2-      172.92 7 (E1) 0.0761α=0.0761
9/2-      200.75 5 E1 0.0515α=0.0515
9/2-      218.10 6 E2 0.189α=0.189
9/2-      246.2 3 (M1) 0.227α=0.227
    396.44 11/2- 7.5 µs 7 
% IT = 100
    99.76 4 E1 0.327B(E1)(W.u.)=3.6E-9 6, α=0.327
11/2- 7.5 µs 7 
% IT = 100
   128.90 7 E1 0.1657B(E1)(W.u.)=2.1E-9 3, α=0.1657
11/2- 7.5 µs 7 
% IT = 100
   146.65 8 M1+E20.23 0.945B(E2)(W.u.)=0.00026 4, B(M1)(W.u.)=2.1E-7 3, α=0.945
11/2- 7.5 µs 7 
% IT = 100
   207.12 6 E1 0.0475B(E1)(W.u.)=4.0E-10 7, α=0.0475
11/2- 7.5 µs 7 
% IT = 100
   252.50 10 E2 0.1179B(E2)(W.u.)=0.000108 15, α=0.1179
    463.11 3/2+      250.2 1 M1 0.218α=0.218
3/2+      463.6 4 E1 0.0066α=0.0066 1
    496.28 5/2+      278.90 10 M1 0.1622α=0.1622
5/2+      283.4 1 M1+E20.80 0.1268α=0.1268
    590.06 7/2+      372.6 2 M1 0.0750α=0.0750
7/2+      377.1 2 M1 0.0726α=0.0726
7/2+      400.8 2 M1 0.0619α=0.0619

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      03/2- 3.21 h 3 
% ε = 100
Q=+1.361 14, μ=-0.365 3
E(level): 3/2[521] band, α=-1/2.
    143.897/2- ≤ 0.18 ns E(level): 3/2[521] band, α=-1/2.
    172.065/2- 0.35 ns 10  XREF: E(?).
E(level): 5/2[523] band.
    189.429/2+ 84 ns 10  E(level): Coriolis-mixed +π band, α=+1/2.
    212.915/2+ 0.81 ns 6  E(level): Coriolis-mixed +π band, α=+1/2.
    266.447/2- 0.21 ns 3  XREF: E(?).
E(level): 5/2[523] band.
    267.4513/2+ 2.0 ns 2  E(level): Coriolis-mixed +π band, α=+1/2.
    369.483/2+   E(level): 3/2[651] bandhead, with 3/2[402] mixture.
    388.4611/2-   E(level): 3/2[521] band, α=-1/2.
    390.209/2-   XREF: E(?).
E(level): 5/2[523] band.
    396.4411/2- 7.5 µs 7 
% IT = 100
E(level): 11/2[505] band, α=-1/2.
    463.113/2+   E(level): 3/2[402] band, with 3/2[651] mixture.
    466.217/2+   E(level): Coriolis-mixed +π band, α=+1/2.
    4811/2+   E(level): 1/2[400] bandhead.
    496.285/2+   E(level): 3/2[402] band, with 3/2[651] mixture.
    590.067/2+   E(level): 3/2[402] band, with 3/2[651] mixture.
    724.84(3/2-)   E(level): 3/2[532] bandhead.
    726.015/2-   E(level): 3/2[521] band, α=-1/2.
    782.515/2-   E(level): 11/2[505] band, α=-1/2.
    783.521/2+   E(level): Coriolis-mixed +π band, α=+1/2.
    843.16(5/2-)   E(level): 5/2[512] bandhead.
   1135.619/2-   E(level): 3/2[521] band, α=-1/2.
   1208.625/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   1249.519/2-   E(level): 11/2[505] band, α=-1/2.
   1589.723/2-   E(level): 3/2[521] band, α=-1/2.
E(level)Jπ(level)T1/2(level)Comments
   1727.129/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   1783.623/2-   E(level): 11/2[505] band, α=-1/2.
   2044.69/2+   E(level): Possible Kπ=9/2+ bandhead.
   2063.227/2-   E(level): 3/2[521] band, α=-1/2.
   2325.9633/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   2369.027/2-   E(level): 11/2[505] band, α=-1/2.
   2548.531/2-   E(level): 3/2[521] band, α=-1/2.
   2980.131/2-   E(level): 11/2[505] band, α=-1/2.
   2991.3637/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   3066.935/2-   E(level): 3/2[521] band, α=-1/2.
   3565.735/2-   E(level): 11/2[505] band, α=-1/2.
   3645.939/2-   E(level): 3/2[521] band, α=-1/2.
   3708.341/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   4297.743/2-   E(level): 3/2[521] band, α=-1/2.
   4461.545/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   5020.447/2-   E(level): 3/2[521] band, α=-1/2.
   5246.549/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   5808.451/2-   E(level): 3/2[521] band, α=-1/2.
   6076.553/2+   E(level): Coriolis-mixed +π band, α=+1/2.
   6656(55/2-)   E(level): 3/2[521] band, α=-1/2.
   6957(57/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
   7557(59/2-)   E(level): 3/2[521] band, α=-1/2.
   7873(61/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
   8499(63/2-)   E(level): 3/2[521] band, α=-1/2.
   8808(65/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
   9458(67/2-)   E(level): 3/2[521] band, α=-1/2.
   9768(69/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  10431(71/2-)   E(level): 3/2[521] band, α=-1/2.
  10770(73/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  11433(75/2-)   E(level): 3/2[521] band, α=-1/2.
  11824(77/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  12477(79/2-)   E(level): 3/2[521] band, α=-1/2.
  12934(81/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  13571(83/2-)   E(level): 3/2[521] band, α=-1/2.
  14104(85/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  14719(87/2-)   E(level): 3/2[521] band, α=-1/2.
  15339(89/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  15924(91/2-)   E(level): 3/2[521] band, α=-1/2.
  16636(93/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  17191(95/2-)   E(level): 3/2[521] band, α=-1/2.
  17995(97/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  18521(99/2-)   E(level): 3/2[521] band, α=-1/2.
  19416(101/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  19916(103/2-)   E(level): 3/2[521] band, α=-1/2.
  20895(105/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  21376(107/2-)   E(level): 3/2[521] band, α=-1/2.
  22407(109/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  22901(111/2-)   E(level): 3/2[521] band, α=-1/2.
  23917(113/2+)   E(level): Coriolis-mixed +π band, α=+1/2.
  24487(115/2-)   E(level): 3/2[521] band, α=-1/2.
E(level)Jπ(level)T1/2(level)Comments
  26143(119/2-)   E(level): 3/2[521] band, α=-1/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    249.77    190.24I(γ): Discrepant values are Iγ(190)=157 from (α,3nγ) (1970Hj02), and Iγ(190)|<29 from 161Er IT decay (7.5 μs) (1970Bo02).
    388.46    138.68I(γ): discrepant value is Iγ(138)=22 from (α,3nγ) (1970Hj02).
    396.44    207.12I(γ): discrepant value is Iγ(207)=91 from (α,3nγ) study (1970Hj02), but Iγ(207)=50(13) in 161Er IT decay.
    891.6    382.8I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=13 4 is computed.
   1312.7    464.0I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=30 8 is computed.
   1589.7    806.3I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=60 20 is computed.
   1772.2    470.5I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=22 7 is computed.
   2063.09   1850.0E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   2063.2    473.5I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=78 22 is computed.
   2066.89   1850.0E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   2256.7    406.7I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=24 7 is computed.
   2369.0    585.6E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
   2548.5    485.3I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=51 16 is computed.
   3066.9    740.9I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=96 14 is computed.
   3565.7    585.6E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
   3645.9    654.6I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=27 9 is computed.

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