ADOPTED LEVELS, GAMMAS for 208Hg

Authors: B. Singh, K. Zuber |  Citation: ENSDF |  Cutoff date: 12-APR-2010 

Author: M. J. Martin |  Citation: Nucl. Data Sheets 108,1583 (2007) |  Cutoff date: 1-Jun-2007 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=3.48×103 keV 3S(n)= 4.85×103 keV 5S(p)= 9.7×103 keV SYQ(α)= 2.23×103 keV SY
Reference: 2012WA38

References:
  A  9Be(238U,xγ):ISOMER 

General Comments:

Assignment: Pb(12C,X). E=360 MeV. Hg separation, p 2614γ (1994Zh02)

Also produced in Pb(18O,X), E=600 MeV (σ=5.0 μb 18) (2004Zh28). Other papers by the same group: 2003Zh06, 2003Zh19, 1998Zh22, 1997Zh18, 1993Zh07, 1993Zh35.

Measured mass excess=-13265 keV 31 (2009Ch08, Schottky mass spectrometry)

Nuclear structure calculations for Hg isotopes: 1999Sh04

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










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0A 0+ 41 m +5-4 
% β- = 100
     
   669.0 5 A (2+)     669.0
  100

     0
0+
  1093.9 7 A (4+)     424.9
  100

   669.0
(2+)
  1296.9 9 A (6+)     203.0
  100
(E2)
  1093.9
(4+)
  1296.9+XA (8+) 99 ns 14 
% IT = 100
    X
 

  1296.9
(6+)

E(level): From Eγ’s, assuming Δ(Eγ)=0.5 KeV for each γ ray

Jπ(level): From shell-model predictions and probable yrast sequence

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
  1296.9 (6+)     203.0(E2)0.37α=0.37

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     00+ 41 m +5-4 
% β- = 100
E(level): Dominant configuration=νg9/22 (2009Al29).
   669.0(2+)   Configuration=νg9/222+ with mixing of π(s1/2d3/2) (2009Al29).
  1093.9(4+)   E(level): Dominant configuration=νg9/22 (2009Al29).
  1296.9(6+)   E(level): Dominant configuration=νg9/22 (2009Al29).
  1296.9+X(8+) 99 ns 14 
% IT = 100
E(level): Dominant configuration=νg9/22 (2009Al29).

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1296.9   203.0M(γ): from α(exp) deduced from intensity balance, assuming cascade of E2 transitions (2009Al29)
  1296.9+X     XE(γ): x<83 keV (binding energy of the K electron in Hg), as suggested by the observed low intensity of Hg Kα x rays (2009Al29)

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