ADOPTED LEVELS, GAMMAS for 177Hg

Author: F.G. Kondev |  Citation: Nucl. Data Sheets 159, 1 (2019) |  Cutoff date: 30-Aug-2019 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-9440 keV 80S(n)= 9070 keV 80S(p)= 1550 keV 80Q(α)= 6740 keV 50
Reference: 2017WA10

References:
  A  181Pb α decay  B  144Sm(36Ar,3nγ)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0AB 7/2- 117 ms 7 
% α = 100
     
    77.2 5 AB 9/2-      77.2 5 
  100
M1
     0
7/2-
   323.2 12  B 13/2+ 1.50 µs 15 
% IT = 100
  246 1 
  100
M2
    77.2
9/2-
   698.2 12  B (13/2-)     621 1 
  100
[E2]
    77.2
9/2-
   961.2 15  B (17/2+)     638 1 
  100
[E2]
   323.2
13/2+
  1162.2 15  B (17/2-)     464 1 
  100
[E2]
   698.2
(13/2-)
  1496.2 18  B (21/2+)     535 1 
  100
[E2]
   961.2
(17/2+)
  1631? B (21/2-)     469 1 ?
  100
[E2]
  1162.2
(17/2-)
  1946.2 21  B (25/2+)     450 1 
  100
[E2]
  1496.2
(21/2+)
  2441.2 23  B (29/2+)     495 1 
  100
[E2]
  1946.2
(25/2+)
  2990.2 25  B (33/2+)     549 1 
  100
[E2]
  2441.2
(29/2+)
  3588? B (37/2+)     598 1 ?
  100
[E2]
  2990.2
(33/2+)

E(level): From a least-squares fit to Eγ

E(γ): Energies and placement from 144Sm(36Ar,3nγ ) (2003Me20), unless otherwise stated. ΔEγ were estimated by the evaluator, except for the 77.2-keV γ ray.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Weakly-deformed structures built on the νi13/2 orbital
   323.2 12  13/2+ 1.50 µs 15 
% IT = 100
     
   961.2 15  (17/2+)     638 1 
  100
[E2]
   323.2
13/2+
  1496.2 18  (21/2+)     535 1 
  100
[E2]
   961.2
(17/2+)
  1946.2 21  (25/2+)     450 1 
  100
[E2]
  1496.2
(21/2+)
  2441.2 23  (29/2+)     495 1 
  100
[E2]
  1946.2
(25/2+)
  2990.2 25  (33/2+)     549 1 
  100
[E2]
  2441.2
(29/2+)
  3588 (37/2+)     598 1 ?
  100
[E2]
  2990.2
(33/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Weakly-deformed structures built on the νf7/2/h9/2 orbital
     0 7/2- 117 ms 7 
% α = 100
     
    77.2 5  9/2-      77.2 5 
  100
M1
     0
7/2-
   698.2 12  (13/2-)     621 1 
  100
[E2]
    77.2
9/2-
  1162.2 15  (17/2-)     464 1 
  100
[E2]
   698.2
(13/2-)
  1631 (21/2-)     469 1 ?
  100
[E2]
  1162.2
(17/2-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    77.2 9/2-      77.2 5 M13.04α=3.04 8, α(L)=2.33 6, α(M)=0.543 13, α(N)=0.136 4, α(O)=0.0258 7, α(P)=0.00197 5
   323.2 13/2+ 1.50 µs 15 
% IT = 100
  246 1 M22.67B(M2)(W.u.)=0.198 21, α=2.67 6, α(K)=2.00 4, α(L)=0.506 11, α(M)=0.124 3, α(N)=0.0314 7, α(O)=0.00587 13, α(P)=0.000407 9
   698.2 (13/2-)     621 1 [E2]0.01628α=0.01628, α(K)=0.01233 18, α(L)=0.00300 5, α(M)=0.000726 11, α(N)=0.000181 3, α(O)=3.28×10-5 5, α(P)=1.637E-6 24
   961.2 (17/2+)     638 1 [E2]0.01533α=0.01533, α(K)=0.01167 17, α(L)=0.00278 4, α(M)=0.000673 10, α(N)=0.0001681 25, α(O)=3.04×10-5 5, α(P)=1.548E-6 23
  1162.2 (17/2-)     464 1 [E2]0.0324α=0.0324, α(K)=0.0229 4, α(L)=0.00715 12, α(M)=0.00176 3, α(N)=0.000440 7, α(O)=7.80×10-5 13, α(P)=3.04E-6 5
  1496.2 (21/2+)     535 1 [E2]0.0229α=0.0229, α(K)=0.01685 25, α(L)=0.00461 7, α(M)=0.001127 17, α(N)=0.000281 5, α(O)=5.04×10-5 8, α(P)=2.24E-6 4
  1631 (21/2-)     469 1 [E2]0.0315α=0.0315, α(K)=0.0224 4, α(L)=0.00691 11, α(M)=0.00170 3, α(N)=0.000425 7, α(O)=7.54×10-5 12, α(P)=2.97E-6 5
  1946.2 (25/2+)     450 1 [E2]0.0350α=0.0350 6, α(K)=0.0245 4, α(L)=0.00788 13, α(M)=0.00195 3, α(N)=0.000486 8, α(O)=8.61×10-5 14, α(P)=3.25E-6 5
  2441.2 (29/2+)     495 1 [E2]0.0276α=0.0276, α(K)=0.0199 3, α(L)=0.00583 9, α(M)=0.001434 22, α(N)=0.000358 6, α(O)=6.37×10-5 10, α(P)=2.64E-6 4
  2990.2 (33/2+)     549 1 [E2]0.0216α=0.0216, α(K)=0.01595 24, α(L)=0.00427 7, α(M)=0.001042 16, α(N)=0.000260 4, α(O)=4.66×10-5 7, α(P)=2.12E-6 3
  3588 (37/2+)     598 1 [E2]0.0177α=0.0177, α(K)=0.01333 20, α(L)=0.00333 5, α(M)=0.000810 12, α(N)=0.000202 3, α(O)=3.64×10-5 6, α(P)=1.77E-6 3

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     07/2- 117 ms 7 
% α = 100
Q=0.57 83, μ=-1.025 48
Eα=6582 keV 15 (2009An20), 6580 keV 5 (2004GoZZ), 6580 keV 8 (1979Ha10), 6577 keV 9 (1996Pa01) and 6580 keV (1991Se01).
E(level): Eα=6582 keV 15 (2009An20), 6580 keV 5 (2004GoZZ), 6580 keV 8 (1979Ha10), 6577 keV 9 (1996Pa01) and 6580 keV (1991Se01).

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Additional Gamma Comments:

E(level)E(gamma)Comments
    77.2    77.2E(γ): From 2009An20 in 181Pb α decay. Other: 77 keV in 2003Me20 and 78 keV in 2005CaZV
M(γ): From α(exp)=2.7 9 using the intensities of the (6990-7060)-keV α group and 77.2-keV γ-ray in 181Pb α decay (2009An20)
   323.2   246M(γ): From α(exp)=2.4 4, from intensities of Kα, Kβ x rays of Hg and 246γ in 144Sm(36Ar,3nγ ) (2003Me20)

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