ADOPTED LEVELS, GAMMAS for 185Hg

Author: S. -c. Wu |  Citation: Nucl. Data Sheets 106, 619 (2005) |  Cutoff date: 1-Nov-2005 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-6.42×103 keV 3S(n)= 7898 keV 19S(p)= 3.15×103 keV 3Q(α)= 5774 keV 5
Reference: 2012WA38

References:
  A  161Dy(28Si,4nγ)  B  185Hg IT decay (21.6 S)

General Comments:

Levels: α significant signature splitting for the 9/2[624] rotational band could be explained in terms of nuclear shape coexistence within the i13/2 subshell: the 9/2[624] rotational band based on a prolate core, and a decoupled rotational band (configuration=i13/2) based on a slightly deformed oblate core. An alternative explanation requires mixing of a K=1/2 configuration with the i13/2 rotational bands, due to a possible hexadecapole deformation and γ asymmetry (1988Ha19). See also 1975Fr08 and 1980Pr01 for theoretical calculations of nuclear deformations, and 1979St04 for a discussion on the odd-particle rotation-aligned coupling scheme.

Levels: band(b) 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=+1/2

Levels: band(d) 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=-1/2

Gammas: From 161Dy(28Si,4nγ), unless otherwise specified.

Q-value: Note: Current evaluation has used the following Q record -6420 60 7898 19 3146 27 5774 5 1993Au05










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB 1/2- 49.1 s 10 
% ε = 94 1
% α = 6 1
     
    26.1 5  B 3/2-      26.1 5 
  100
M1+E2
     0.0
1/2-
    34 8 AB (7/2)-       8 8 S
 

    26.1
3/2-
    96 1 A  (5/2)-      96 1 
 
(Q)
     0.0
1/2-
    99.3 5 AB 13/2+ 21.6 s 15 
% ε = 46 10
% IT = 54 10
% α ≈ 0.03
   65.3 5 
  100
E3
    34
(7/2)-
   141.0 4 A  (9/2)-     107.2 5 
  100
(D+Q)
    34
(7/2)-
   212.7 14 A  (9/2+)        
   280.7 4 A  (11/2)-     139.9 5 
  246.5 5 
   21
  100
D+Q
E2
   141.0
    34
(9/2)-
(7/2)-
   329.5 11 A  (9/2)-     233.5 4 
  100
Q
    96
(5/2)-
   412.7 9 A  (11/2+)     200 1 
  313 1 
 
 
(D+Q)
(D+Q)
   212.7
    99.3
(9/2+)
13/2+
   435.7 5 A  (13/2)-     155 1 
  294.6 4 
    6
  100
(D+Q)
E2
   280.7
   141.0
(11/2)-
(9/2)-
   479.8 6 A  (17/2)+     380.5 4 
  100
(Q)
    99.3
13/2+
   541.2 6 A  (17/2)+     441.9 4 
  100
E2
    99.3
13/2+
   549.6 9 A  (15/2+)     136.8 5 
  100
(Q)
   412.7
(11/2+)
   612.7 5 A  (15/2)-     177 1 
  332.1 4 
    6.3
  100
(D+Q)
E2
   435.7
   280.7
(13/2)-
(11/2)-
   633.8 11 A  (13/2)-     304.3 4 
  100
E2
   329.5
(9/2)-
   806.5 6 A  (17/2)-     194 1 
  370.7 4 
 
  100
(D+Q)
E2
   612.7
   435.7
(15/2)-
(13/2)-
   906.8A  (19/2)+     358 1 
  366 1 
  428.4 5 
   80
   90
  100
(Q)
(D+Q)
M1+E2
   549.6
   541.2
   479.8
(15/2+)
(17/2)+
(17/2)+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  1015.3 12 A  (17/2)-     381.5 4 
  100
E2
   633.8
(13/2)-
  1020.0 6 A  (19/2)-     213 1 
  407.4 4 
 
  100
(D+Q)
E2
   806.5
   612.7
(17/2)-
(15/2)-
  1030.5 6 A  (21/2)+     489.4 2 
  100
E2
   541.2
(17/2)+
  1093A  (21/2+)     614 1 
  100
(Q)
   479.8
(17/2)+
  1248.4 6 A  (21/2)-     228 1 
  441.9 4 
 
  100
(D+Q)
(Q)
  1020.0
   806.5
(19/2)-
(17/2)-
  1359.9 7 A  (23/2)+     329 1 
  452.0 4 
   33
  100
(D+Q)
E2
  1030.5
   906.8
(21/2)+
(19/2)+
  1460.6 13 A  (21/2)-     445.3 4 
  100
E2
  1015.3
(17/2)-
  1495.4 7 A  (23/2)-     247 1 
  475.4 4 
 
  100
(D+Q)
E2
  1248.4
  1020.0
(21/2)-
(19/2)-
  1514.3 7 A  (25/2)+     152 1 
  419 1 ?
  483.8 2 
 
 
  100
(D+Q)
(Q)
E2
  1359.9
  1093
  1030.5
(23/2)+
(21/2+)
(21/2)+
  1752.9 8 A  (25/2)-     504.5 4 
  100
E2
  1248.4
(21/2)-
  1886A  (27/2)+     373 1 
  527.3 4 
   17
  100
(D+Q)
E2
  1514.3
  1359.9
(25/2)+
(23/2)+
  1954.7 13 A  (25/2)-     494.1 4 
  100
E2
  1460.6
(21/2)-
  2029.2 8 A  (27/2)-     533.8 4 
  100
E2
  1495.4
(23/2)-
  2052.0 7 A  (29/2)+     165 1 ?
  537.7 4 
 
  100
(D+Q)
E2
  1886
  1514.3
(27/2)+
(25/2)+
  2310.1 9 A  (29/2)-     557.2 5 
  100
Q
  1752.9
(25/2)-
  2478.9 8 A  (31/2)+     427 1 
  591.7 5 
   25
  100
(D+Q)
(Q)
  2052.0
  1886
(29/2)+
(27/2)+
  2480.5 14 A  (29/2)-     525.8 5 
  100
(Q)
  1954.7
(25/2)-
  2611.8 9 A  (31/2)-     582.6 5 
  100
E2
  2029.2
(27/2)-
  2648.3 8 A  (33/2)+     596.3 4 
  100
Q
  2052.0
(29/2)+
  2909.2 10 A  (33/2)-     599.1 5 
  100
Q
  2310.1
(29/2)-
  3027.5 17 A  (33/2)-     547 1 
  100
(Q)
  2480.5
(29/2)-
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3123.7 10 A  (35/2+)     644.8 5 
  100
(Q)
  2478.9
(31/2)+
  3236A  (35/2)-     622.8 5 
  100
Q
  2611.8
(31/2)-
  3295.2 10 A  (37/2)+     646.9 5 
  100
Q
  2648.3
(33/2)+
  3532.7 11 A  (37/2)-     623.5 5 
  100
(Q)
  2909.2
(33/2)-
  3617.3 18 A      589.8 5 
  100

  3027.5
(33/2)-
  3810.7 14 A      687.0
  100

  3123.7
(35/2+)
  3867A      631 1 
  100

  3236
(35/2)-
  3899A      663.2 5 
  100

  3236
(35/2)-
  3982.7 11 A      687.5 5 
  100

  3295.2
(37/2)+
  4176.9 13 A      644.2 5 
  100

  3532.7
(37/2)-
  4581?A      682 1 ?
 

  3899

  4702.7 15 ?A      720 1 ?
 

  3982.7

E(level): Deduced by evaluator from a least-squares fit to adopted γ-ray energies. Uncertainties do not include the 8-keV uncertainty in the energy of 21S isomer.

Jπ(level): Assignments from 161Dy(28Si,4nγ) are based on γ-ray multipolarities and decay patterns, angular distributions, linear polarizations, rotational structure, and on the energy systematics of other odd-A Hg isotopes. Ratios of stretched M1 to E2 intraband γ-ray reduced transition probabilities for transitions deexciting members of the 7/2[514] and 9/2[624] rotational bands are consistent with their Nilsson orbital assignments (1988Ha19). Specific arguments are given with the individual levels.

E(γ): Uncertainties have been deduced by evaluator from authors’ estimates of 0.2 keV to 0.5 keV in 161Dy(28Si,4nγ). ΔE=1 keV for for energies quoted to the nearest keV.

I(γ): Relative uncertainties are 10 to 30%.

M(γ): From γ(θ) and linear polarization measurements, and by assuming spin and parities from the level scheme (1988Ha19).

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - 1/2(521) ROTATIONAL band. PROLATE SHAPE.
     0.0 1/2- 49.1 s 10 
% ε = 94 1
% α = 6 1
     
    26.1 5  3/2-      26.1 5 
  100
M1+E2
     0.0
1/2-
    96 1  (5/2)-      96 1 
 
(Q)
     0.0
1/2-
   329.5 11  (9/2)-     233.5 4 
  100
Q
    96
(5/2)-
   633.8 11  (13/2)-     304.3 4 
  100
E2
   329.5
(9/2)-
  1015.3 12  (17/2)-     381.5 4 
  100
E2
   633.8
(13/2)-
  1460.6 13  (21/2)-        
  1954.7 13  (25/2)-     494.1 4 
  100
E2
  1460.6
(21/2)-
  2480.5 14  (29/2)-     525.8 5 
  100
(Q)
  1954.7
(25/2)-
  3027.5 17  (33/2)-     547 1 
  100
(Q)
  2480.5
(29/2)-
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2
    34 8  (7/2)-        
   280.7 4  (11/2)-     139.9 5 
  246.5 5 
   21
  100
D+Q
E2
   141.0
    34
(9/2)-
(7/2)-
   612.7 5  (15/2)-     177 1 
  332.1 4 
    6.3
  100
(D+Q)
E2
   435.7
   280.7
(13/2)-
(11/2)-
  1020.0 6  (19/2)-     213 1 
  407.4 4 
 
  100
(D+Q)
E2
   806.5
   612.7
(17/2)-
(15/2)-
  1495.4 7  (23/2)-     247 1 
  475.4 4 
 
  100
(D+Q)
E2
  1248.4
  1020.0
(21/2)-
(19/2)-
  2029.2 8  (27/2)-     533.8 4 
  100
E2
  1495.4
(23/2)-
  2611.8 9  (31/2)-        
  3236 (35/2)-     622.8 5 
  100
Q
  2611.8
(31/2)-
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2
   212.7 14  (9/2+)        
   541.2 6  (17/2)+     441.9 4 
  100
E2
    99.3
13/2+
  1030.5 6  (21/2)+     489.4 2 
  100
E2
   541.2
(17/2)+
  1514.3 7  (25/2)+     152 1 
  419 1 ?
  483.8 2 
 
 
  100
(D+Q)
(Q)
E2
  1359.9
  1093
  1030.5
(23/2)+
(21/2+)
(21/2)+
  2052.0 7  (29/2)+     165 1 ?
  537.7 4 
 
  100
(D+Q)
E2
  1886
  1514.3
(27/2)+
(25/2)+
  2648.3 8  (33/2)+     596.3 4 
  100
Q
  2052.0
(29/2)+
  3295.2 10  (37/2)+        
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Kπ=13/2+, DECOUPLED ROTATIONAL band. Configuration=I13/2.
    99.3 5  13/2+ 21.6 s 15 
% ε = 46 10
% IT = 54 10
% α ≈ 0.03 		     
   479.8 6  (17/2)+     380.5 4 
  100
(Q)
    99.3
13/2+
  1093 (21/2+)     614 1 
  100
(Q)
   479.8
(17/2)+

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
    26.1 3/2-      26.1 5 M1+E21.3 62.2×103α=2.2×103 5
    96 (5/2)-      96 1 (Q) 6.69α=6.69
    99.3 13/2+ 21.6 s 15 
% ε = 46 10
% IT = 54 10
% α ≈ 0.03
   65.3 5 E3 1610B(E3)(W.u.)=0.0019 4, α=1610
   280.7 (11/2)-     246.5 5 E2 0.197α=0.197
   435.7 (13/2)-     294.6 4 E2 0.114α=0.114
   541.2 (17/2)+     441.9 4 E2 0.0369α=0.0369
   612.7 (15/2)-     332.1 4 E2 0.080α=0.080
   633.8 (13/2)-     304.3 4 E2 0.103α=0.103
   806.5 (17/2)-     370.7 4 E2 0.0588α=0.0588
  1015.3 (17/2)-     381.5 4 E2 0.0543α=0.0543
  1020.0 (19/2)-     407.4 4 E2 0.0456α=0.0456
  1030.5 (21/2)+     489.4 2 E2 0.0286α=0.0286
  1359.9 (23/2)+     452.0 4 E2 0.0348α=0.0348
  1460.6 (21/2)-     445.3 4 E2 0.0362α=0.0362
  1495.4 (23/2)-     475.4 4 E2 0.0307α=0.0307
  1514.3 (25/2)+     483.8 2 E2 0.0294α=0.0294
  1752.9 (25/2)-     504.5 4 E2 0.0266α=0.0266
  1886 (27/2)+     527.3 4 E2 0.0239α=0.0239
  1954.7 (25/2)-     494.1 4 E2 0.0279α=0.0279
  2029.2 (27/2)-     533.8 4 E2 0.0233α=0.0233
  2052.0 (29/2)+     537.7 4 E2 0.0229α=0.0229
  2611.8 (31/2)-     582.6 5 E2 0.0190α=0.0190

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.01/2- 49.1 s 10 
% ε = 94 1
% α = 6 1
μ=+0.508 3
%α=6 1 adopted by evaluator from data of 1970Ha18. See 185Hg(49 s) α decay. %α=5.5 7 was given by 1970Ha18.
E(level): %α=6 1 adopted by evaluator from data of 1970Ha18. See 185Hg(49 s) α decay. %α=5.5 7 was given by 1970Ha18. 1/2(521) ROTATIONAL band. PROLATE SHAPE.
    26.13/2-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE. From 185Hg IT decay (21 s).
    34(7/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2. From 185Hg IT decay (21 s).
    96(5/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
    99.313/2+ 21.6 s 15 
% ε = 46 10
% IT = 54 10
% α ≈ 0.03
Q=0.20 33, μ=-1.017 9
%IT from 1982Bo27; %α from 1976GrZC, renormalized to %IT=54.
E(level): %IT from 1982Bo27; %α from 1976GrZC, renormalized to %IT=54. Kπ=13/2+, DECOUPLED ROTATIONAL band. Configuration=I13/2. From 185Hg IT decay (21 s).
   212.7(9/2+)   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
   280.7(11/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
   329.5(9/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
   479.8(17/2)+   E(level): Kπ=13/2+, DECOUPLED ROTATIONAL band. Configuration=I13/2.
   541.2(17/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
   612.7(15/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
   633.8(13/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  1015.3(17/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  1020.0(19/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
  1030.5(21/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
  1093(21/2+)   E(level): Kπ=13/2+, DECOUPLED ROTATIONAL band. Configuration=I13/2.
  1460.6(21/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  1495.4(23/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
  1514.3(25/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
  1954.7(25/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  2029.2(27/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
  2052.0(29/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
  2480.5(29/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  2611.8(31/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
  2648.3(33/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
  3027.5(33/2)-   E(level): 1/2(521) ROTATIONAL band. PROLATE SHAPE.
  3236(35/2)-   E(level): 7/2(514) ROTATIONAL band. PROLATE SHAPE. α=-1/2.
  3295.2(37/2)+   E(level): 9/2(624) ROTATIONAL band. PROLATE SHAPE. α=+1/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    26.1    26.1E(γ): ΔE estimated by evaluator from the conversion electron spectrum of 1982Bo27.. From 185Hg IT decay (21 s).
I(γ): From 185Hg IT decay (21 s).
    34     8E(γ): Eγ<15 keV, from 185Hg IT decay (21 s).
   141.0   107.2I(γ): Weak.
   435.7   155I(γ): Complex line, Iγ is from coincidence data.
   541.2   441.9E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
   612.7   177I(γ): Complex line, Iγ is from coincidence data.
   806.5   194I(γ): Weak.
   906.8   358I(γ): Complex line, Iγ is from coincidence data.
   366I(γ): Complex line, Iγ is from coincidence data.
  1020.0   213I(γ): Weak.
  1093   614I(γ): Complex line, Iγ is from coincidence data.
  1248.4   228I(γ): Weak.
   441.9E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  1359.9   329I(γ): Complex line, Iγ is from coincidence data.
  1495.4   247I(γ): Weak.
  1514.3   152I(γ): Weak.
   419I(γ): Weak.
  1886   373I(γ): Complex line, Iγ is from coincidence data.
  2052.0   165I(γ): Weak.
  2478.9   427I(γ): Complex line, Iγ is from coincidence data.
  3027.5   547I(γ): Complex line, Iγ is from coincidence data.

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