ADOPTED LEVELS, GAMMAS for 190Bi

Authors: Balraj Singh, and Jun Chen |  Citation: Nucl. Data Sheets 169, 1 (2020) |  Cutoff date: 15-Oct-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-6036 keV 26S(n)= 8610 keV 30S(p)= 45 keV 27Q(α)= 6862 keV 3
Reference: 2017WA10

References:
  A  194At α decay (286 MS)  B  194At α decay (323 MS)

General Comments:

Mass measurements: 2008We02, 1999Sc46

Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for about 16 primary references dealing with nuclear structure and other calculations.

Q-value: S(2n)=19548 25, S(2p)=2840 40, Q(εp)=6728 24 (2017Wa10)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    0A  (3+) 6.3 s 1 
% α = 90 +10-30
% ε = 10 +30-10
     
   45 15 A  (4+)      45 15 S
 
[M1]
    0
(3+)
  121.5 3 A  (5-) 175 ns 8 
% IT ≈ 100
   76.5 3 
  100
E1
   45
(4+)
  168.0 5 A  (6+)      46.5 5 
  100
(E1)
  121.5
(5-)
  191 65  B (10-) 6.2 s 1 
% ε = 30 9
% α = 70 9
     
  231.3 5  B (9+,10+,11+)      40.3 5 
  100
(E1)
  191
(10-)
  287.7 5  B (9-,10-,11-)      96.7 5 
  100
(M1)
  191
(10-)
  465.0 5  B (-) 1.0 µs +10-5 
% IT ≈ 100
  274.0 5 
  100
(E2+M1)
  191
(10-)

M(γ): From 194At α decay (2009An11), based on measured ce data.

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   45 (4+)      45 15 [M1]16×101α=16×101 14
  121.5 (5-) 175 ns 8 
% IT ≈ 100
   76.5 3 E10.194B(E1)(W.u.)=2.18E-6 10, α=0.194 4
  168.0 (6+)      46.5 5 (E1)0.744α=0.744 25
  231.3 (9+,10+,11+)      40.3 5 (E1)1.09α=1.09 4
  287.7 (9-,10-,11-)      96.7 5 (M1)11.2α=11.2 2
  465.0 (-) 1.0 µs +10-5 
% IT ≈ 100
  274.0 5 (E2+M1)0.38α=0.38 22

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0(3+) 6.3 s 1 
% α = 90 +10-30
% ε = 10 +30-10
μ=3.85 9 (2017Ba12,2019StZV)
α-decay energy=6422 10 (2013Uu01), 6428 6 (2013Ny01), 6431 5 (1991Va04, 2003An26), 6429 5 (1988Hu03), 6429 (1993An19).
   45(4+)   Jπ(level): Tentatively assigned from (46.5γ, (E1))-(76.5γ, E1)-(possible 45γ, [M1]) cascade to (3+).
  121.5(5-) 175 ns 8 
% IT ≈ 100
E(level): From Eγ data, relative to the energy of the 45-keV level kept as fixed. Absolute uncertainty is 15 keV, as for the 45-keV level.
Jπ(level): Tentatively assigned from (46.5γ, (E1))-(76.5γ, E1)-(possible 45γ, [M1]) cascade to (3+).
  168.0(6+)   E(level): From Eγ data, relative to the energy of the 45-keV level kept as fixed. Absolute uncertainty is 15 keV, as for the 45-keV level.
Jπ(level): Tentatively assigned from (46.5γ, (E1))-(76.5γ, E1)-(possible 45γ, [M1]) cascade to (3+).
  191(10-) 6.2 s 1 
% ε = 30 9
% α = 70 9
μ=2.39 12 (2017Ba12,2019StZV)
α-decay energy=6450 5 (2013Ny01), 6456 5 (1991Va04, 2003An26), 6455 5 (1988Hu03), 6455 (1993An19).
  231.3(9+,10+,11+)   E(level): From Eγ data, relative to the energy of the 171-keV level kept as fixed. Absolute uncertainty is 57 keV, as for the 171-keV level.
  287.7(9-,10-,11-)   E(level): From Eγ data, relative to the energy of the 171-keV level kept as fixed. Absolute uncertainty is 57 keV, as for the 171-keV level.
  465.0(-) 1.0 µs +10-5 
% IT ≈ 100
E(level): From Eγ data, relative to the energy of the 171-keV level kept as fixed. Absolute uncertainty is 57 keV, as for the 171-keV level.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   45   45E(γ): not observed, γ probably totally converted (2009An11)
M(γ): M1 is required from the intensity balance (2009An11)
  465.0  274.0M(γ): α(K)exp=0.20 5 determined from (γ)(K x-ray)-coin (2001An11) gives E2 or M1+E2 with δ≈1.5.

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