ADOPTED LEVELS, GAMMAS for 178Hg

Authors: E. Achterberg, O.A. Capurro, G.V. Marti |  Citation: Nucl. Data Sheets 110, 1473 (2009) |  Cutoff date: 31-May-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.152×104 keV SYS(n)= 1.160×104 keV 8S(p)= 2060 keV 15Q(α)= 6577 keV 3
Reference: 2012WA38

References:
  A  182Pb α decay  B  (HI,xnγ)

General Comments:

Theory references:

1972Fa11, calculation of deformation energy surfaces

1987Be06, shape coexistence studies, PES calculations

1993Na05, low-spin shape coexistence, reflection asymmetric WS model

1994Pa29,1994Yo05,1996He02,1996Ta01, discussion of applicability of relativistic mean-field approach in studies of nuclear shapes, binding energies, deformation parameters.

Levels: Level scheme based on α-γ correlations, γγ coincidences, and intensity balances (2000Ko48,2000Ko01,1997Ca16)

Gammas: For relative γ-ray intensities, see (HI,xnγ) dataset

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

Q-value: ΔQ(β)(est)=110 keV (2003Au03)

Q-value: Q(β+)=6010 60 keV (2003Au03)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0AB 0+ 266.5 ms 24 
% ε ≈ 30
% α ≈ 70
     
   558.00 20  B 2+      558.0 2 
 
E2
     0.0
0+
  1012.4 3  B 4+      454.4 2 
 
E2
   558.00
2+
  1346.9 4  B 6+      334.5 2 
 
E2
  1012.4
4+
  1357.8 6  B (3-)      799.7 6 
 
(E1)
   558.00
2+
  1447.2 6  B 3-      889.1 6 
 
E1
   558.00
2+
  1743.5 5  B 8+      396.6 4 
 
E2
  1346.9
6+
  1851.4 8  B (4-)      839.0 8 
 
(E1)
  1012.4
4+
  1990.2 5  B 5-      542.8 8 
   632.2 8 
   644.0 8 ?
   978.2 6 
   31 9 
   59 10 
  <15
  100
E2
E2
(E1)
E1
  1447.2
  1357.8
  1346.9
  1012.4
3-
(3-)
6+
4+
  2157.0 8  B (5-)      799.1 8 
 
(E2)
  1357.8
(3-)
  2201.2 7  B 10+      457.7 4 
 
E2
  1743.5
8+
  2215.3 8  B (6-)      363.9 8 
   868.4 8 
  100 5 
  <50
(E2)
(E1)
  1851.4
  1346.9
(4-)
6+
  2388.6 6  B 7-      231.5 8 
   398.4 4 
   644.9 8 
  1041.0 8 ?
   15 4 
  100
   17 4 
   <7
(E2)
E2
E1
(E1)
  2157.0
  1990.2
  1743.5
  1346.9
(5-)
5-
8+
6+
  2711.6 8  B 12+      510.4 4 
 
E2
  2201.2
10+
  2730.0 7  B 9-      341.4 4 
 
E2
  2388.6
7-
  3117.7 8  B 11-      387.7 4 
 
E2
  2730.0
9-
  3265.2 9  B 14+      553.6 4 
 
E2
  2711.6
12+
  3539.1 10  B 13-      421.4 6 
 
E2
  3117.7
11-
  3853.8 11  B 16+      588.6 6 
 
E2
  3265.2
14+
  3980.4 12  B (15-)      441.3 6 
 
(E2)
  3539.1
13-
  4454.4 14  B (17-)      474.0 8 
 
(E2)
  3980.4
(15-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  4469.3 14  B (18+)      615.5 8 
 
(E2)
  3853.8
16+
  4971.9 17  B (19-)      517.5 8 
 
(E2)
  4454.4
(17-)
  5090.3 16  B (20+)      621.0 8 
 
(E2)
  4469.3
(18+)
  5534.5 18  B (21-)      562.6 8 
 
(E2)
  4971.9
(19-)

E(level): The level energies are from a least-squares adjustment to the adopted γ-ray energies

Jπ(level): From (HI,xnγ)

E(γ): From (HI,xnγ). Energy uncertainties estimated by the evaluators, based on the range assumed in 2000Ko48, each depending on its experimental γ-ray intensity.

M(γ): Multipolarities from measured angular distributions and directional correlations (2000Ko48,1997Ca16) (see (HI,xnγ) dataset).

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - π=+ gs band.
     0.0 0+ 266.5 ms 24 
% ε ≈ 30
% α ≈ 70
     
   558.00 20  2+      558.0 2 
 
E2
     0.0
0+
  1012.4 3  4+      454.4 2 
 
E2
   558.00
2+
  1346.9 4  6+      334.5 2 
 
E2
  1012.4
4+
  1743.5 5  8+      396.6 4 
 
E2
  1346.9
6+
  2201.2 7  10+      457.7 4 
 
E2
  1743.5
8+
  2711.6 8  12+      510.4 4 
 
E2
  2201.2
10+
  3265.2 9  14+      553.6 4 
 
E2
  2711.6
12+
  3853.8 11  16+      588.6 6 
 
E2
  3265.2
14+
  4469.3 14  (18+)      615.5 8 
 
(E2)
  3853.8
16+
  5090.3 16  (20+)      621.0 8 
 
(E2)
  4469.3
(18+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - π=+ band.
  2388.6 6  7-        
  2730.0 7  9-      341.4 4 
 
E2
  2388.6
7-
  3117.7 8  11-      387.7 4 
 
E2
  2730.0
9-
  3539.1 10  13-      421.4 6 
 
E2
  3117.7
11-
  3980.4 12  (15-)      441.3 6 
 
(E2)
  3539.1
13-
  4454.4 14  (17-)      474.0 8 
 
(E2)
  3980.4
(15-)
  4971.9 17  (19-)      517.5 8 
 
(E2)
  4454.4
(17-)
  5534.5 18  (21-)      562.6 8 
 
(E2)
  4971.9
(19-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   558.00 2+      558.0 2 E20.0208α=0.0208
  1012.4 4+      454.4 2 E20.0341α=0.0341
  1346.9 6+      334.5 2 E20.0775α=0.0775
  1357.8 (3-)      799.7 6 (E1)0.00348α=0.00348
  1447.2 3-      889.1 6 E10.00286α=0.00286
  1743.5 8+      396.6 4 E20.0485α=0.0485
  1851.4 (4-)      839.0 8 (E1)0.00318α=0.00318
  1990.2 5-      542.8 8 E20.0221α=0.0221
5-      632.2 8 E20.01564α=0.01564
5-      644.0 8 (E1)0.00530α=0.00530
5-      978.2 6 E10.00240α=0.00240
  2157.0 (5-)      799.1 8 (E2)0.00947α=0.00947
  2201.2 10+      457.7 4 E20.0335α=0.0335
  2215.3 (6-)      363.9 8 (E2)0.0612α=0.0612 10
(6-)      868.4 8 (E1)0.00298α=0.00298
  2388.6 7-      231.5 8 (E2)0.239α=0.239 5
7-      398.4 4 E20.0479α=0.0479
7-      644.9 8 E10.00529α=0.00529
7-     1041.0 8 (E1)0.00214α=0.00214
  2711.6 12+      510.4 4 E20.0256α=0.0256
  2730.0 9-      341.4 4 E20.0732α=0.0732
  3117.7 11-      387.7 4 E20.0515α=0.0515
  3265.2 14+      553.6 4 E20.0211α=0.0211
  3539.1 13-      421.4 6 E20.0414α=0.0414
  3853.8 16+      588.6 6 E20.0184α=0.0184
E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
  3980.4 (15-)      441.3 6 (E2)0.0367α=0.0367
  4454.4 (17-)      474.0 8 (E2)0.0307α=0.0307
  4469.3 (18+)      615.5 8 (E2)0.01660α=0.01660
  4971.9 (19-)      517.5 8 (E2)0.0248α=0.0248
  5090.3 (20+)      621.0 8 (E2)0.01627α=0.01627
  5534.5 (21-)      562.6 8 (E2)0.0204α=0.0204

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 266.5 ms 24 
% ε ≈ 30
% α ≈ 70
This level decays to the 174Pt g.s. by an unhindered α transition, with Eα=6429 3 keV, weighted average of 6425 15 keV (1971Ha03), 6425 15 keV (1976HoZD), 6430 6 keV (1979Ha10), 6428 9 keV (1996Pa01), 6429 4 keV (2000Ko01), 6429 5 keV (2004GoZZ).
E(level): This level decays to the 174Pt g.s. by an unhindered α transition, with Eα=6429 3 keV, weighted average of 6425 15 keV (1971Ha03), 6425 15 keV (1976HoZD), 6430 6 keV (1979Ha10), 6428 9 keV (1996Pa01), 6429 4 keV (2000Ko01), 6429 5 keV (2004GoZZ). π=+ gs band.
   558.002+   E(level): π=+ gs band.
  1012.44+   E(level): π=+ gs band.
  1346.96+   E(level): π=+ gs band.
  1743.58+   E(level): π=+ gs band.
  2201.210+   E(level): π=+ gs band.
  2388.67-   Band head for negative-parity band 2.
E(level): Band head for negative-parity band 2. π=+ band.
  2711.612+   E(level): π=+ gs band.
  2730.09-   E(level): π=+ band.
  3117.711-   E(level): π=+ band.
  3265.214+   E(level): π=+ gs band.
  3539.113-   E(level): π=+ band.
  3853.816+   E(level): π=+ gs band.
  3980.4(15-)   E(level): π=+ band.
  4454.4(17-)   E(level): π=+ band.
  4469.3(18+)   E(level): π=+ gs band.
  4971.9(19-)   E(level): π=+ band.
  5090.3(20+)   E(level): π=+ gs band.
  5534.5(21-)   E(level): π=+ band.

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