ADOPTED LEVELS, GAMMAS for 138Eu

Author: Jun Chen |  Citation: Nucl. Data Sheets 146, 1 (2017) |  Cutoff date: 30-Sep-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-5950 keV SYS(n)= 9675 keV 28S(p)= 1010 keV 50Q(α)= 2560 keV 60
Reference: 2017WA10

References:
  A  138Gd ε decay  B  92Mo(50Cr,N3PG)
  C  106Cd(35Cl,2pnγ) 

General Comments:

First identification of 138Eu nuclide by 1982No15 via 112Sn(32S,3p2n). The identification in an earlier report (1977Bo02) by the same group is incorrect according to 1982No15.

Other measurements:

Isotope shifts: 2004Ba93, 1992Le09, 1987Al25

Nuclear moments: 1987AlZB, 1992Si22

Nuclear structure calculations:

2013Sa57: calculated halflife.

2011Al12: calculated deformation parameters and tilt angles, energy splittings between chiral partner bands in the rotating frame

Q-value: ΔQ(β-)=200 (syst,2017Wa10)

Q-value: S(2n)=21650 200 (syst), S(2p)=5160 70, Q(εp)=5030 30, Q(β+)=9750 30 (2017Wa10)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0    (6-) 12.1 s 6 
% ε = 100
     
     0.0+YA   (1-)        
    64.70+Y 20 A         64.7 2 
  100

     0.0+Y
(1-)
   293.0+Y 3 A        228.3 2 
  100

    64.70+Y

   297.5+Y 4 A        232.8 3 
  100

    64.70+Y

   310.7+Y 4 A        246.0 3 
  100

    64.70+Y

   356.4+Y 3 A        291.7 2 
  100

    64.70+Y

   376.0+Y 4 A        311.3 3 
  100

    64.70+Y

   584.8+Y 3 A        228.4 3 
   520.1 3 
 
 


   356.4+Y
    64.70+Y


     0.0+X B  (8+)        
   105.12+X 20  BC (9+)      105.1 2 
  100
M1+E2
     0.0+X
(8+)
   272.1+X 3  BC (10+)      167.0 2 
  100
M1+E2
   105.12+X
(9+)
   545.4+X 3  BC (11+)      273.3 2 
   440.3 3 
  100 7 
   24.1 17 
M1+E2
(E2)
   272.1+X
   105.12+X
(10+)
(9+)
   629.6+X 6   C (10+)      524
   630
 
 


   105.12+X
     0.0+X
(9+)
(8+)
   793.6+X 6   C (11+)      164
   522
   688
 
 
 



   629.6+X
   272.1+X
   105.12+X
(10+)
(10+)
(9+)
   807.5+X 3  BC (12+)      262.2 2 
   535.3 2 
  100 7 
   86 7 
M1+E2
E2
   545.4+X
   272.1+X
(11+)
(10+)
  1092.7+X 6   C (12+)      299
   463
   547
 
 
 



   793.6+X
   629.6+X
   545.4+X
(11+)
(10+)
(11+)
  1169.9+X 3  BC (13+)      362.6 2 
   624.6 2 
  100 5 
   50 5 
M1+E2

   807.5+X
   545.4+X
(12+)
(11+)
  1443.6+X 6   C (13+)      351
   650
   897
 
 
 



  1092.7+X
   793.6+X
   545.4+X
(12+)
(11+)
(11+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  1490.2+X 3  BC (14+)      320.3 2 
   682.6 2 
   83 42 
  100 8 
M1+E2
E2
  1169.9+X
   807.5+X
(13+)
(12+)
  1849.2+X 7   C (14+)      405
   680
   756
 
 
 



  1443.6+X
  1169.9+X
  1092.7+X
(13+)
(13+)
(12+)
  1917.5+X 4  BC (15+)      427.5 2 
   747.4 2 
  100 9 
   91 46 
M1+E2

  1490.2+X
  1169.9+X
(14+)
(13+)
  2044.5+X 4   C (13-)     1237.0 2 
  100

   807.5+X
(12+)
  2232.3+X 7   C (15+)      383
   743
   788
  1060?
 
 
 
 




  1849.2+X
  1490.2+X
  1443.6+X
  1169.9+X
(14+)
(14+)
(13+)
(13+)
  2286.2+X 4   C (14-)      241.5 2 
  1116.5 2 
   21.9
  100.0

(E1)
  2044.5+X
  1169.9+X
(13-)
(13+)
  2299.6+X 4  BC (16+)      382.3 2 
   809.2 2 
   19.4
  100.0
M1+E2
E2
  1917.5+X
  1490.2+X
(15+)
(14+)
  2521.7+X 4   C (15-)      235.4 2 
   477.4 2 
  1031.6 2 
  100.0
   20.8
   93.8
M1+E2

(E1)
  2286.2+X
  2044.5+X
  1490.2+X
(14-)
(13-)
(14+)
  2710.2+X 10   C (16+)      478
   861
 
 


  2232.3+X
  1849.2+X
(15+)
(14+)
  2762.4+X 4   C (17+)      462.8 2 
   844.9 2 
   28.3
  100.0
M1+E2
E2
  2299.6+X
  1917.5+X
(16+)
(15+)
  2780.3+X 4   C (16-)      258.7 2 
   494.1 2 
   862.5 2 
  100.0
   27.8
    3.3

E2

  2521.7+X
  2286.2+X
  1917.5+X
(15-)
(14-)
(15+)
  3066.9+X 4   C (17-)      286.6 2 
   545.5 2 
  100.0
   42.0


  2780.3+X
  2521.7+X
(16-)
(15-)
  3129.3+X 13   C (17+)      420?
   897
 
 


  2710.2+X
  2232.3+X
(16+)
(15+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3178.9+X 4   C (18+)      416.7 2 
   879.0 2 
   11.5
  100.0

E2
  2762.4+X
  2299.6+X
(17+)
(16+)
  3347.1+X 4   C (17-)     1047.6 2 
  100.0

  2299.6+X
(16+)
  3395.5+X 4   C (18-)      328.4 2 
   614.9 2 
  100.0
   64.8


  3066.9+X
  2780.3+X
(17-)
(16-)
  3590.4+X 4   C (19+)      411.8 2 
   827.6 2 
   57.7
  100.0


  3178.9+X
  2762.4+X
(18+)
(17+)
  3744.2+X 4   C (19-)      348.5 2 
   677.6 2 
   22.2
  100.0


  3395.5+X
  3066.9+X
(18-)
(17-)
  3780.5+X 4   C (18-)      435.1 2 
  1018.4 2 
   11.1
  100.0

(E1)
  3347.1+X
  2762.4+X
(17-)
(17+)
  4016.2+X 4   C (20+)      426.0 2 
   837.4 2 
   82.1
  100.0
M1+E2

  3590.4+X
  3178.9+X
(19+)
(18+)
  4141.0+X 4   C (20-)      396.9 2 
   745.4 2 
   52.8
  100.0


  3744.2+X
  3395.5+X
(19-)
(18-)
  4257.7+X 4   C (19-)      477.4 2 
   910.6 2 
  1078.3 2 
   21.6
   43.1
  100.0


(E1)
  3780.5+X
  3347.1+X
  3178.9+X
(18-)
(17-)
(18+)
  4456.9+X 4   C (21+)      440.5 2 
   866.2 2 
   27.3
  100.0
(M1+E2)

  4016.2+X
  3590.4+X
(20+)
(19+)
  4548.0+X 4   C (21-)      406.9 2 
   804.0 2 
   35.0
  100


  4141.0+X
  3744.2+X
(20-)
(19-)
  4751.0+X 4   C (20-)      493.0 2 
   970.9 2 
  <17
  100


  4257.7+X
  3780.5+X
(19-)
(18-)
  4983.2+X 4   C (22+)      526.4 2 
   967.4 2 
  <16
  100


  4456.9+X
  4016.2+X
(21+)
(20+)
  5010.6+X 4   C (22-)      462.6 2 
   869.5 2 
  <59
  100


  4548.0+X
  4141.0+X
(21-)
(20-)
  5481.0+X 21   C (23-)      933 2 
  100

  4548.0+X
(21-)
  5486.8+X 4   C (23+)      504.2 2 
  1029.4 2 
   <7
  100


  4983.2+X
  4456.9+X
(22+)
(21+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  6026.6+X 5   C (24+)     1043.4 2 
  100

  4983.2+X
(22+)
  6632.3+X 5   C (25+)     1145.5 2 
  100

  5486.8+X
(23+)

E(level): From a least-squares fit to γ-ray energies, assuming ΔEγ=1 keV if not given

Jπ(level): Based on γ(θ), γ multipolarities, band structures and systematics of neighbouring isotones in 106Cd(35Cl,2pnγ) for high-spin states, unless otherwise noted. The positive parity states follow the assignments from 2001He15, while the J values of the negative parity states are those from 1994Pa14, increased by one unit after private communication of the evaluator of 2003So13 with the author E.S.Paul. Note that the values reported by 1988Li29 in 92Mo(50Cr,2npγ) are lower by one unit than those in 2001He15 in 106Cd(35Cl,2pnγ) of the same group. It’s in the evaluator’s opinion that these assignments are not definite and further experimental studies are needed to confirm these assignments.

M(γ): From 1994Pa14 in 106Cd(35Cl,2pnγ) based on γ(DCO)

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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 1, πh11/2~#νh11/2, α=0
   272.1+X 3  (10+)        
   807.5+X 3  (12+)        
  1490.2+X 3  (14+)      320.3 2 
   682.6 2 
   83 42 
  100 8 
M1+E2
E2
  1169.9+X
   807.5+X
(13+)
(12+)
  2299.6+X 4  (16+)      382.3 2 
   809.2 2 
   19.4
  100.0
M1+E2
E2
  1917.5+X
  1490.2+X
(15+)
(14+)
  3178.9+X 4  (18+)      416.7 2 
   879.0 2 
   11.5
  100.0

E2
  2762.4+X
  2299.6+X
(17+)
(16+)
  4016.2+X 4  (20+)      426.0 2 
   837.4 2 
   82.1
  100.0
M1+E2

  3590.4+X
  3178.9+X
(19+)
(18+)
  4983.2+X 4  (22+)      526.4 2 
   967.4 2 
  <16
  100


  4456.9+X
  4016.2+X
(21+)
(20+)
  6026.6+X 5  (24+)     1043.4 2 
  100

  4983.2+X
(22+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band 2, πh11/2~#νh11/2, α=1
   105.12+X 20  (9+)        
   545.4+X 3  (11+)        
  1169.9+X 3  (13+)      362.6 2 
   624.6 2 
  100 5 
   50 5 
M1+E2

   807.5+X
   545.4+X
(12+)
(11+)
  1917.5+X 4  (15+)      427.5 2 
   747.4 2 
  100 9 
   91 46 
M1+E2

  1490.2+X
  1169.9+X
(14+)
(13+)
  2762.4+X 4  (17+)      462.8 2 
   844.9 2 
   28.3
  100.0
M1+E2
E2
  2299.6+X
  1917.5+X
(16+)
(15+)
  3590.4+X 4  (19+)      411.8 2 
   827.6 2 
   57.7
  100.0


  3178.9+X
  2762.4+X
(18+)
(17+)
  4456.9+X 4  (21+)      440.5 2 
   866.2 2 
   27.3
  100.0
(M1+E2)

  4016.2+X
  3590.4+X
(20+)
(19+)
  5486.8+X 4  (23+)      504.2 2 
  1029.4 2 
   <7
  100


  4983.2+X
  4456.9+X
(22+)
(21+)
  6632.3+X 5  (25+)     1145.5 2 
  100

  5486.8+X
(23+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band 3, πh11/2~#νh11/2, α=0
   629.6+X 6  (10+)        
  1092.7+X 6  (12+)        
  1849.2+X 7  (14+)      405
   680
   756
 
 
 



  1443.6+X
  1169.9+X
  1092.7+X
(13+)
(13+)
(12+)
  2710.2+X 10  (16+)      478
   861
 
 


  2232.3+X
  1849.2+X
(15+)
(14+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Band 4, πh11/2~#νh11/2, α=1
   793.6+X 6  (11+)        
  1443.6+X 6  (13+)        
  2232.3+X 7  (15+)      383
   743
   788
  1060?
 
 
 
 




  1849.2+X
  1490.2+X
  1443.6+X
  1169.9+X
(14+)
(14+)
(13+)
(13+)
  3129.3+X 13  (17+)      420?
   897
 
 


  2710.2+X
  2232.3+X
(16+)
(15+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Band 5, possible negative band
  2044.5+X 4  (13-)        
  2286.2+X 4  (14-)        
  2521.7+X 4  (15-)      235.4 2 
   477.4 2 
  1031.6 2 
  100.0
   20.8
   93.8
M1+E2

(E1)
  2286.2+X
  2044.5+X
  1490.2+X
(14-)
(13-)
(14+)
  2780.3+X 4  (16-)      258.7 2 
   494.1 2 
   862.5 2 
  100.0
   27.8
    3.3

E2

  2521.7+X
  2286.2+X
  1917.5+X
(15-)
(14-)
(15+)
  3066.9+X 4  (17-)      286.6 2 
   545.5 2 
  100.0
   42.0


  2780.3+X
  2521.7+X
(16-)
(15-)
  3395.5+X 4  (18-)      328.4 2 
   614.9 2 
  100.0
   64.8


  3066.9+X
  2780.3+X
(17-)
(16-)
  3744.2+X 4  (19-)      348.5 2 
   677.6 2 
   22.2
  100.0


  3395.5+X
  3066.9+X
(18-)
(17-)
  4141.0+X 4  (20-)      396.9 2 
   745.4 2 
   52.8
  100.0


  3744.2+X
  3395.5+X
(19-)
(18-)
  4548.0+X 4  (21-)      406.9 2 
   804.0 2 
   35.0
  100


  4141.0+X
  3744.2+X
(20-)
(19-)
  5010.6+X 4  (22-)        
  5481.0+X 21  (23-)      933 2 
  100

  4548.0+X
(21-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - Band 6, possible negative band
  3347.1+X 4  (17-)        
  3780.5+X 4  (18-)        
  4257.7+X 4  (19-)      477.4 2 
   910.6 2 
  1078.3 2 
   21.6
   43.1
  100.0


(E1)
  3780.5+X
  3347.1+X
  3178.9+X
(18-)
(17-)
(18+)
  4751.0+X 4  (20-)      493.0 2 
   970.9 2 
  <17
  100


  4257.7+X
  3780.5+X
(19-)
(18-)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(6-) 12.1 s 6 
% ε = 100
μ=5.3 7 (1992Si22)
Evaluated nuclear charge radius <r2>1/2=4.978 fm 10 (2013An02).
   105.12+X(9+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
   272.1+X(10+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
   545.4+X(11+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
   629.6+X(10+)   E(level): Band 3, πh11/2~#νh11/2, α=0.
   793.6+X(11+)   E(level): Band 4, πh11/2~#νh11/2, α=1.
   807.5+X(12+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  1092.7+X(12+)   E(level): Band 3, πh11/2~#νh11/2, α=0.
  1169.9+X(13+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  1443.6+X(13+)   E(level): Band 4, πh11/2~#νh11/2, α=1.
  1490.2+X(14+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  1849.2+X(14+)   E(level): Band 3, πh11/2~#νh11/2, α=0.
  1917.5+X(15+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  2044.5+X(13-)   E(level): Band 5, possible negative band.
  2232.3+X(15+)   E(level): Band 4, πh11/2~#νh11/2, α=1.
  2286.2+X(14-)   E(level): Band 5, possible negative band.
  2299.6+X(16+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  2521.7+X(15-)   E(level): Band 5, possible negative band.
  2710.2+X(16+)   E(level): Band 3, πh11/2~#νh11/2, α=0.
  2762.4+X(17+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  2780.3+X(16-)   E(level): Band 5, possible negative band.
  3066.9+X(17-)   E(level): Band 5, possible negative band.
  3129.3+X(17+)   E(level): Band 4, πh11/2~#νh11/2, α=1.
  3178.9+X(18+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  3347.1+X(17-)   E(level): Band 6, possible negative band.
E(level)Jπ(level)T1/2(level)Comments
  3395.5+X(18-)   E(level): Band 5, possible negative band.
  3590.4+X(19+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  3744.2+X(19-)   E(level): Band 5, possible negative band.
  3780.5+X(18-)   E(level): Band 6, possible negative band.
  4016.2+X(20+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  4141.0+X(20-)   E(level): Band 5, possible negative band.
  4257.7+X(19-)   E(level): Band 6, possible negative band.
  4456.9+X(21+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  4548.0+X(21-)   E(level): Band 5, possible negative band.
  4751.0+X(20-)   E(level): Band 6, possible negative band.
  4983.2+X(22+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  5010.6+X(22-)   E(level): Band 5, possible negative band.
  5481.0+X(23-)   E(level): Band 5, possible negative band.
  5486.8+X(23+)   E(level): Band 2, πh11/2~#νh11/2, α=1.
  6026.6+X(24+)   E(level): Band 1, πh11/2~#νh11/2, α=0.
  6632.3+X(25+)   E(level): Band 2, πh11/2~#νh11/2, α=1.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   105.12+X   105.1E(γ): weighted average of 105.2 3 from 92Mo(50Cr,2npγ) and 105.0 2 from 106Cd(35Cl,2pnγ).
   272.1+X   167.0E(γ): weighted average of 167.1 3 from 92Mo(50Cr,2npγ) and 167.0 2 from 106Cd(35Cl,2pnγ).
   545.4+X   273.3E(γ): weighted average of 273.2 3 from 92Mo(50Cr,2npγ) and 273.3 2 from 106Cd(35Cl,2pnγ).
I(γ): From 92Mo(50Cr,2npγ) (1988Li29)
   440.3E(γ): Multiply placed with intensity suitably divided. From 92Mo(50Cr,2npγ) (1988Li29)
I(γ): other: 8.2 from 106Cd(35Cl,2pnγ) (1994Pa14). Multiply placed with intensity suitably divided. From 92Mo(50Cr,2npγ) (1988Li29)
   807.5+X   262.2E(γ): weighted average of 262.1 3 from 92Mo(50Cr,2npγ) and 262.2 2 from 106Cd(35Cl,2pnγ).
I(γ): From 92Mo(50Cr,2npγ) (1988Li29)
   535.3E(γ): weighted average of 535.3 3 from 92Mo(50Cr,2npγ) and 535.3 2 from 106Cd(35Cl,2pnγ).
I(γ): 44.3 from 106Cd(35Cl,2pnγ). From 92Mo(50Cr,2npγ) (1988Li29)
  1169.9+X   362.6E(γ): weighted average of 362.3 3 from 92Mo(50Cr,2npγ) and 362.7 2 from 106Cd(35Cl,2pnγ).
I(γ): From 92Mo(50Cr,2npγ) (1988Li29)
   624.6E(γ): weighted average of 624.4 3 from 92Mo(50Cr,2npγ) and 624.7 2 from 106Cd(35Cl,2pnγ).
I(γ): 56.5 from 106Cd(35Cl,2pnγ). From 92Mo(50Cr,2npγ) (1988Li29)
  1490.2+X   320.3E(γ): weighted average of 320.2 3 from 92Mo(50Cr,2npγ) and 320.4 2 from 106Cd(35Cl,2pnγ).
I(γ): 8.9 from 106Cd(35Cl,2pnγ). From 92Mo(50Cr,2npγ) (1988Li29)
   682.6E(γ): weighted average of 682.5 3 from 92Mo(50Cr,2npγ) and 682.6 2 from 106Cd(35Cl,2pnγ).
I(γ): From 92Mo(50Cr,2npγ) (1988Li29)
  1917.5+X   427.5E(γ): weighted average of 427.2 3 from 92Mo(50Cr,2npγ) and 427.7 2 from 106Cd(35Cl,2pnγ).
I(γ): 54.0 from 106Cd(35Cl,2pnγ). From 92Mo(50Cr,2npγ) (1988Li29)
   747.4E(γ): weighted average of 747.4 3 from 92Mo(50Cr,2npγ) and 747.4 2 from 106Cd(35Cl,2pnγ).
I(γ): 100 from 106Cd(35Cl,2pnγ). From 92Mo(50Cr,2npγ) (1988Li29)
  2299.6+X   382.3E(γ): weighted average of 382.1 3 from 92Mo(50Cr,2npγ) and 382.4 2 from 106Cd(35Cl,2pnγ).
I(γ): <45 from 92Mo(50Cr,2npγ)
   809.2E(γ): weighted average of 809.3 3 from 92Mo(50Cr,2npγ) and 809.1 2 from 106Cd(35Cl,2pnγ).
  2521.7+X   477.4E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  3780.5+X   435.1E(γ): poor-fit; uncertainty was increased to ΔEγ=0.6 keV in the fitting procedure. Level-energy difference=433.40
  4257.7+X   477.4E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  4456.9+X   440.5E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided

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