ADOPTED LEVELS, GAMMAS for 230U

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 113, 2113 (2012) |  Cutoff date: 1-May-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-3.62×103 keV 6S(n)= 7667 keV 8S(p)= 5572 keV 6Q(α)= 5992.7 keV 7
Reference: 2012WA38

References:
  A  234Pu α decay  B  230Pa β- decay
  C  232Th(α,6nγ)  D  231Pa(p,2nγ), 230Th(α,4nγ)

General Comments:

Level energies for one-phonon octupole-vibrational states, and B(E3) values for the excitation of these octupole-vibrational bands were calculated by 1970Ne08 and 1975Iv03. See 1975Iv03 for calculated components of the K=0, 1, 2, 3 octupole-vibrational state wave functions. See 1988Na08 for calculated energies of K=0+ g.s. and K=0- octupole-vibrational levels. Others: 2011Na24, 2008Ch15.

The first quadrupole state with K=2+ (γ-vibrational state) and B(E2) value for the excitation of this state were calculated by 1965Be40 and 1975Iv03. See 1965Be40 and 1975Iv03 for the calculated components of the γ-vibrational state wave function.

Equilibrium deformation parameters were examined and calculated by 1970Ga12, 1981Gy03, 1982Du16, 1983Ro14, 1984Na22.

For calculations of quadrupole and hexadecapole moments, see 1970Ga12, 1978Ne13, and 2010Vr01.

Cluster Decay: measured 22Ne clusters using glass/polyester track detectors. Source from 230Pa decay. Others: 2010Zh51, 2004Tr10, 2001St29, 1999Pa22, 1997Tr17.

Nuclear reactions: 231Pa(d,3n), measured cross section (2012Av02,2009Mo37,2008Mo11).

Cluster Decay: 14C clusters: 2005Ku04, 2005Ku32, 1999De51.

Cluster Decay: 24Ne clusters: 2008Ni12, 2005Ku32, 2005Ku04.

Cluster Decay: 22Ne clusters: 2012Qi01, 2012Si01, 2011Si13. Calculated half-life: 2011Sh13, 2010Ni13, 2010Sa29, 2010Si12, 2009Ar05, 2009Ar11, 2009Do16, 2009Ro16, 2009Zh28, 2008Bh05.

Cluster Decay: 20O clusters: 2011Wa30.

Spontaneous fission: Calculated half-life: 2010Sa09, 2008Xu06. Second fission barrier: 2012Ja08.

Alpha decay: 2011Si14, 2011Zh36, 2010Wa23, 2010Wa31, 2009De32, 2009Ni06, 2009Wa01, 2008Xu06, 2008Zh12, 2007Pe30. Calculated half-life: 2011Qi06, 2009Qi07.

Rotational states: Calculated nuclear masses, rotational bands, single-particle level energies: 2011Ne09, 2011No04, 2010Bu02.

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
     0.0ABCD 0+ 20.23 d 2 
% α = 100
     
    51.727 23 ABCD 2+ 0.26 ns 3     51.72 4 
   100
E2
     0.0
0+
   169.34 5 ABCD 4+     117.8 2 
   100
E2
    51.727
2+
   346.95 21   CD 6+     177.6 2 
   100
E2
   169.34
4+
   366.649 19  B D 1-     314.92 2 
  366.65 2 
   100 5 
    81 5 
E1
E1
    51.727
     0.0
2+
0+
   435.19 3  B D 3-     265.85 3 
  383.46 2 
    38 4 
   100 5 
E1
E1
   169.34
    51.727
4+
2+
   558.1 8    D (5-)     211.1
  388.9
 
 


   346.95
   169.34
6+
4+
   578.0 3   CD 8+     231.1 2 
   100
E2
   346.95
6+
   733.9 11   CD (7-)     387.0
   100

   346.95
6+
   856.3 4   CD 10+     278.2 2 
   100

   578.0
8+
   958.6 7   CD (9-)     380.8
   100

   578.0
8+
  1175.6 4   CD 12+     319.3 2 
   100

   856.3
10+
  1229.0 7   CD (11-)     270.4 2 
  372.6
    35.7
  ≈100


   958.6
   856.3
(9-)
10+
  1531.5 5   CD 14+     355.9 2 
 

  1175.6
12+
  1539.7 7   CD (13-)     310.7 2 
  364.0
    28.6
  ≈100


  1229.0
  1175.6
(11-)
12+
  1885.9 5   CD (15-)     346
  354.4 2 
 
 


  1539.7
  1531.5
(13-)
14+
  1921.1 6   CD 16+     389.6 3 
   100

  1531.5
14+
  2266.7?  CD (17-)     345.5 2 
  380
 
 


  1921.1
  1885.9
16+
(15-)
  2337.8?  CD (18+)     416.6 2 ?
   100

  1921.1
16+
  2779 3   C  (20+)     442
   100

  2337.8
(18+)
  3243 4   C  (22+)     464
   100

  2779
(20+)

E(level): Deduced by evaluators from a least-squares fit to adopted γ-ray energies.

Jπ(level): Spin/parity assignments are based on rotational and vibrational structures. Specific arguments based on γ-ray multipolarities are given for individual levels.

M(γ): From ce measurements in 230Pa β- decay and in (α,4nγ) reaction.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05
     0.0 0+ 20.23 d 2 
% α = 100
     
    51.727 23  2+ 0.26 ns 3     51.72 4 
   100
E2
     0.0
0+
   169.34 5  4+     117.8 2 
   100
E2
    51.727
2+
   346.95 21  6+     177.6 2 
   100
E2
   169.34
4+
   578.0 3  8+     231.1 2 
   100
E2
   346.95
6+
   856.3 4  10+     278.2 2 
   100

   578.0
8+
  1175.6 4  12+     319.3 2 
   100

   856.3
10+
  1531.5 5  14+     355.9 2 
 

  1175.6
12+
  1921.1 6  16+     389.6 3 
   100

  1531.5
14+
  2337.8 (18+)     416.6 2 ?
   100

  1921.1
16+
  2779 3  (20+)     442
   100

  2337.8
(18+)
  3243 4  (22+)     464
   100

  2779
(20+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=0- OCTUPOLE-VIBRATIONAL band.
   366.649 19  1-        
   435.19 3  3-     265.85 3 
  383.46 2 
    38 4 
   100 5 
E1
E1
   169.34
    51.727
4+
2+
   558.1 8  (5-)     211.1
  388.9
 
 


   346.95
   169.34
6+
4+
   733.9 11  (7-)     387.0
   100

   346.95
6+
   958.6 7  (9-)     380.8
   100

   578.0
8+
  1229.0 7  (11-)     270.4 2 
  372.6
    35.7
  ≈100


   958.6
   856.3
(9-)
10+
  1539.7 7  (13-)     310.7 2 
  364.0
    28.6
  ≈100


  1229.0
  1175.6
(11-)
12+
  1885.9 5  (15-)     346
  354.4 2 
 
 


  1539.7
  1531.5
(13-)
14+
  2266.7 (17-)     345.5 2 
  380
 
 


  1921.1
  1885.9
16+
(15-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    51.727 2+ 0.26 ns 3     51.72 4 E2308B(E2)(W.u.)=222 27, α=308, α(L)=224 4, α(M)=62.0 9, α(N)=16.82 25, α(O)=3.85 6, α(P)=0.624 9, α(Q)=0.001587 23, α(N+)=21.3 3
   169.34 4+     117.8 2 E26.43α=6.43 11, α(K)=0.189 3, α(L)=4.55 8, α(M)=1.261 21, α(N)=0.342 6, α(O)=0.0787 13, α(P)=0.01293 21, α(Q)=6.15×10-5 10, α(N+)=0.434 7
   346.95 6+     177.6 2 E21.174α=1.174, α(K)=0.184 3, α(L)=0.722 11, α(M)=0.199 3, α(N)=0.0541 8, α(O)=0.01248 19, α(P)=0.00208 3, α(Q)=1.735×10-5 25, α(N+)=0.0687 11
   366.649 1-     314.92 2 E10.0353α=0.0353, α(K)=0.0281 4, α(L)=0.00540 8, α(M)=0.001301 19, α(N)=0.000348 5, α(O)=8.31×10-5 12, α(P)=1.535E-5 22, α(Q)=9.93E-7 14, α(N+)=0.000447 7
1-     366.65 2 E10.0254α=0.0254, α(K)=0.0204 3, α(L)=0.00383 6, α(M)=0.000920 13, α(N)=0.000246 4, α(O)=5.90×10-5 9, α(P)=1.096E-5 16, α(Q)=7.31E-7 11, α(N+)=0.000317 5
   435.19 3-     265.85 3 E10.0513α=0.0513, α(K)=0.0407 6, α(L)=0.00801 12, α(M)=0.00193 3, α(N)=0.000517 8, α(O)=0.0001233 18, α(P)=2.26×10-5 4, α(Q)=1.410E-6 20, α(N+)=0.000665 10
3-     383.46 2 E10.0232α=0.0232, α(K)=0.0186 3, α(L)=0.00347 5, α(M)=0.000833 12, α(N)=0.000223 4, α(O)=5.34×10-5 8, α(P)=9.94E-6 14, α(Q)=6.68E-7 10, α(N+)=0.000287 4
   578.0 8+     231.1 2 E20.444α=0.444, α(K)=0.1211 17, α(L)=0.236 4, α(M)=0.0646 10, α(N)=0.0175 3, α(O)=0.00406 6, α(P)=0.000683 10, α(Q)=8.60×10-6 13, α(N+)=0.0223 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 20.23 d 2 
% α = 100
%22Ne/%α from 2001Bo11, measured using glass track detectors. Other: 1.3×10-12 8 (2000Pa54) measured using polyester detectors. Both used source from 230Pa decay. 2001Bo11 claim much lower α background. Branchings for possible decays by 22Ne, 24Ne and 14C clusters are predicted as 1×10-12%, 1×10-14%, and 1×10-16%, respectively, from lifetime calculations of 1991Bl07 for α, 22Ne, 24Ne and 14C decays. See 1979Po23 also for theoretical calculations of T1/2(α).
E(level): %22Ne/%α from 2001Bo11, measured using glass track detectors. Other: 1.3×10-12 8 (2000Pa54) measured using polyester detectors. Both used source from 230Pa decay. 2001Bo11 claim much lower α background. Branchings for possible decays by 22Ne, 24Ne and 14C clusters are predicted as 1×10-12%, 1×10-14%, and 1×10-16%, respectively, from lifetime calculations of 1991Bl07 for α, 22Ne, 24Ne and 14C decays. See 1979Po23 also for theoretical calculations of T1/2(α). Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
    51.7272+ 0.26 ns 3  E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
   169.344+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
   346.956+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
   366.6491-   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   435.193-   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   558.1(5-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   578.08+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
   733.9(7-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   856.310+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
   958.6(9-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1175.612+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
  1229.0(11-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1531.514+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
  1539.7(13-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1885.9(15-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1921.116+   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
  2266.7(17-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  2337.8(18+)   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
  2779(20+)   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.
  3243(22+)   E(level): Kπ=0+ GS ROTATIONAL band. See 1989Xu04 and 1989Hu05.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    51.727    51.72E(γ): From 232Th(α,6nγ) (2010Ni01).
   366.649   314.92E(γ): From 230Pa β- Decay.
I(γ): From 230Pa β- Decay.
M(γ): From 230Pa β- Decay.
   366.65E(γ): From 230Pa β- Decay.
I(γ): From 230Pa β- Decay.
M(γ): From 230Pa β- Decay.
   435.19   265.85E(γ): From 230Pa β- Decay.
I(γ): From 230Pa β- Decay.
M(γ): From 230Pa β- Decay.
   383.46E(γ): From 230Pa β- Decay.
I(γ): From 230Pa β- Decay.
M(γ): From 230Pa β- Decay.
  1885.9   346E(γ): From 232Th(α,6nγ)
  2266.7   380E(γ): From 232Th(α,6nγ)
  2779   442E(γ): From 232Th(α,6nγ)
  3243   464E(γ): From 232Th(α,6nγ)

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