ADOPTED LEVELS, GAMMAS for 199Po

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 01-DEC-2015 

Author: Balraj Singh |  Citation: Nucl. Data Sheets 108, 79 (2007) |  Cutoff date: 15-Oct-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-6391 keV 24S(n)= 7812 keV 29S(p)= 3130 keV 40Q(α)= 6074.2 keV 19
Reference: 2012WA38

References:
  A  199Po IT decay (4.17 M)  B  203Rn α decay (44 S)
  C  203Rn α decay (26.9 S)  D  176Yb(28Si,5nγ)
  E  183W(20Ne,4nγ),194Pt(12C,7NG) 

General Comments:

Measurement and nuclear structure effects of α anisotropy (199Po α decay): 1988Wo11, 1988Be44, 1987Wo04, 1986Wo03, 1985Wo09.

Mass measurement: 2000Ra23

Charge state measured in heavy-ion fusion reaction 164Dy(40Ar,5n) at 195 MeV: 1979Sk03

Q-value: S(2n)=18000 50, S(2p)=5043 24, Q(εp)=3547 28 (2012Wa38)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB    (3/2-) 5.47 m 15 
% ε = 92.5 3
% α = 7.5 3
     
    72 2 AB    (5/2-)      72 1 
  100
[M1,E2]
     0.0
(3/2-)
   310 2 A CDE (13/2+) 4.17 m 5 
% IT = 2.5 10
% ε = 73.5 10
% α = 24 1
  238 1 
  100
M4
    72
(5/2-)
   909.20 10    DE (17/2+)     599.2 1 
  100
Q
   310
(13/2+)
  1024.95 22    DE (15/2+)     116S
  714.9 3 
 
  100 20 

D+Q
   909.20
   310
(17/2+)
(13/2+)
  1471.50 13    DE (21/2+)     562.3 1 
  100
Q
   909.20
(17/2+)
  1601.88 13    DE (19/2+)     130S
  576.9 3 
  692.7 1 
 
   37 6 
  100 6 

Q
D+Q
  1471.50
  1024.95
   909.20
(21/2+)
(15/2+)
(17/2+)
  1728.02 20     E     818.8 2 
  100

   909.20
(17/2+)
  1870.50 19    DE (25/2+)     399.0 2 
  100
Q
  1471.50
(21/2+)
  1891.57 15    DE (21/2+)     289.7 1 
  419.9 2 
  100 5 
   53 4 
D(+Q)
D+Q
  1601.88
  1471.50
(19/2+)
(21/2+)
  2104.18 17    DE (25/2+)     632.7 1 
  100
Q
  1471.50
(21/2+)
  2176.97 17    DE (23/2)     285.3 2 
  448.9 3 
  705.5 2 
   33 4 
   50 6 
  100 10 
D(+Q)

D+Q
  1891.57
  1728.02
  1471.50
(21/2+)

(21/2+)
  2271.14 22    DE (27/2)     400.6 2 
  100
D+Q
  1870.50
(25/2+)
  2297.59 23    DE (25/2+)     406.0 2 
  100
(Q)
  1891.57
(21/2+)
  2352.57 19    DE (27/2)     175.5 2 
  482.1 1 
   23.7 21 
  100 5 
(Q)
D(+Q)
  2176.97
  1870.50
(23/2)
(25/2+)
  2699.6 3    DE     347.1 3 
  402.0 3 
 
  100 20 


  2352.57
  2297.59
(27/2)
(25/2+)
  2720.73 22    DE (29/2+)     449.4 2 
  616.7 3 
  850.0 5 
  100 11 
   72 14 
   39 9 
(D+Q)

(Q)
  2271.14
  2104.18
  1870.50
(27/2)
(25/2+)
(25/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2721.8 3 ?   D  (27/2+)     450.7 2 
  851.0 5 
  100 12 
   76 12 
(D+Q)

  2271.14
  1870.50
(27/2)
(25/2+)
  2762.32 22    DE (29/2+)     491.3 2 
  658.2 2 
   65 5 
  100 8 
D+Q
Q
  2271.14
  2104.18
(27/2)
(25/2+)
  2978.0 3    DE (31/2+,29/2-)     625.4 2 
  100

  2352.57
(27/2)
  3008.3 3    DE (31/2)     655.7 2 
  100
(Q)
  2352.57
(27/2)
  3145.9 3    DE (33/2+)     383.6 2 
  425.1 3 
  100 5 
   50 5 
Q
Q
  2762.32
  2720.73
(29/2+)
(29/2+)
  3409.08 25    DE (33/2+)     646.9 2 
  688.2 2 
  100 11 
  <48
Q

  2762.32
  2720.73
(29/2+)
(29/2+)
  3556.7 4    DE (35/2+,33/2-)     578.7 2 
  100
(Q)
  2978.0
(31/2+,29/2-)
  3646.8 4    DE     668.8 3 
  100

  2978.0
(31/2+,29/2-)
  3686.3 4    DE (37/2+)     540.4 2 
  100
Q
  3145.9
(33/2+)
  3931.0 5    DE     374.3 3 
  100

  3556.7
(35/2+,33/2-)

E(level): Deduced from adopted Eγ

Jπ(level): Above 13/2, the assignments are from 183W(20Ne,4nγ),194Pt(12C,7nγ) based on γγ(θ)(DCO) data, γ cascade structures and analogy to heavier Po isotopes

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - νi13/2 structure
   310 2  (13/2+) 4.17 m 5 
% IT = 2.5 10
% ε = 73.5 10
% α = 24 1 		     
   909.20 10  (17/2+)     599.2 1 
  100
Q
   310
(13/2+)
  1471.50 13  (21/2+)     562.3 1 
  100
Q
   909.20
(17/2+)
  1870.50 19  (25/2+)     399.0 2 
  100
Q
  1471.50
(21/2+)
  2720.73 22  (29/2+)     449.4 2 
  616.7 3 
  850.0 5 
  100 11 
   72 14 
   39 9 
(D+Q)

(Q)
  2271.14
  2104.18
  1870.50
(27/2)
(25/2+)
(25/2+)
  3145.9 3  (33/2+)     383.6 2 
  425.1 3 
  100 5 
   50 5 
Q
Q
  2762.32
  2720.73
(29/2+)
(29/2+)
  3686.3 4  (37/2+)     540.4 2 
  100
Q
  3145.9
(33/2+)

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
    72 (5/2-)      72 1 [M1,E2] 19α=19 13
   310 (13/2+) 4.17 m 5 
% IT = 2.5 10
% ε = 73.5 10
% α = 24 1
  238 1 M4 65.2B(M4)(W.u.)=3.3 14, α=65.2 17, α(K)=22.3 5, α(L)=30.7 9, α(M)=9.2 3, α(N)=2.45 7, α(O)=0.484 14, α(P)=0.0500 14
  1891.57 (21/2+)     289.7 1 D(+Q)-0.01 +6-5 
  2176.97 (23/2)     285.3 2 D(+Q)0.00 +15-12 
  2352.57 (27/2)     482.1 1 D(+Q)+0.05 +9-10 

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(3/2-) 5.47 m 15 
% ε = 92.5 3
% α = 7.5 3
μ=-0.912 65 (2014Se07), Q=-0.27 12 (2014Se07)
|4β22|51/2=0.09 (2013Se03,2014Se07).
E(level): From 176Yb(28Si,5nγ).
Jπ(level): p3/2, i13/2, p1/2 and f5/2 levels are expected from shell model for low-lying single particle states in a n=115 nucleus. The only particle states available for an M4 transitions are, therefore, i13/2 and f5/2. Measured μ supports the 13/2+ assignment for the isomeric state. Analogy with n=115, 117 nuclei suggests a 3/2- g.s.
    72(5/2-)   Configuration=2f5/2.
E(level): From 176Yb(28Si,5nγ).
Jπ(level): p3/2, i13/2, p1/2 and f5/2 levels are expected from shell model for low-lying single particle states in a n=115 nucleus. The only particle states available for an M4 transitions are, therefore, i13/2 and f5/2. Measured μ supports the 13/2+ assignment for the isomeric state. Analogy with n=115, 117 nuclei suggests a 3/2- g.s.
   310(13/2+) 4.17 m 5 
% IT = 2.5 10
% ε = 73.5 10
% α = 24 1
μ=0.99 7 (1991Wo04), μ=-1.005 70 (2014Se07), Q=+1.40 35 (2014Se07)
|4β22|51/2=0.12 (2013Se03,2014Se07).
E(level): νi13/2 structure. From 176Yb(28Si,5nγ).
Jπ(level): p3/2, i13/2, p1/2 and f5/2 levels are expected from shell model for low-lying single particle states in a n=115 nucleus. The only particle states available for an M4 transitions are, therefore, i13/2 and f5/2. Measured μ supports the 13/2+ assignment for the isomeric state. Analogy with n=115, 117 nuclei suggests a 3/2- g.s.
   909.20(17/2+)   E(level): νi13/2 structure.
  1471.50(21/2+)   E(level): νi13/2 structure.
  1870.50(25/2+)   E(level): νi13/2 structure.
  2720.73(29/2+)   E(level): νi13/2 structure.
  3145.9(33/2+)   E(level): νi13/2 structure.
  3686.3(37/2+)   E(level): νi13/2 structure.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  2720.73   449.4E(γ): From 176Yb(28Si,5nγ)
I(γ): From 176Yb(28Si,5nγ)
M(γ): From 176Yb(28Si,5nγ)
   850.0E(γ): From 176Yb(28Si,5nγ)
I(γ): From 176Yb(28Si,5nγ)
  2721.8   450.7E(γ): From 176Yb(28Si,5nγ)
I(γ): From 176Yb(28Si,5nγ)
M(γ): From 176Yb(28Si,5nγ)
   851.0E(γ): From 176Yb(28Si,5nγ)
I(γ): From 176Yb(28Si,5nγ)
  2762.32   491.3M(γ): From 176Yb(28Si,5nγ)
  3145.9   425.1M(γ): From 176Yb(28Si,5nγ)
  3409.08   646.9M(γ): From 176Yb(28Si,5nγ)
   688.2E(γ): From 176Yb(28Si,5nγ)
I(γ): From 176Yb(28Si,5nγ)
  3686.3   540.4M(γ): From 176Yb(28Si,5nγ)

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