ADOPTED LEVELS, GAMMAS for 230U

Author: C. Morse |  Citation: Nucl. Data Sheets 197, 259 (2024). |  Cutoff date: 26-Sep-2023 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-3.62×103 keV 6S(n)= 7667 keV 7S(p)= 5571 keV 5Q(α)= 5992.5 keV 5
Reference: 2021Wa16

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








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
     
    51.737 23 ABCD 2+ 0.26 ns 3     51.75 4 
   100
E2
     0.0
0+
   169.35 4 ABCD 4+     117.8 2 
   100
E2
    51.737
2+
   346.96 20   CD 6+     177.6 2 
   100
E2
   169.35
4+
   366.654 18  B D (1-)     314.92 2 
  366.65 2 
   100 5 
    81 5 
E1
E1
    51.737
     0.0
2+
0+
   435.20 3  B D (3-)     265.85 3 
  383.46 2 
    38 4 
   100 5 
E1
E1
   169.35
    51.737
4+
2+
   558.2 7    D (5-)     211.1
  388.9
 
 


   346.96
   169.35
6+
4+
   578.1 3   CD 8+     231.1 2 
   100
E2
   346.96
6+
   734.0 10   CD (7-)     387.0
   100

   346.96
6+
   856.3 3   CD 10+     278.2 2 
   100

   578.1
8+
   958.6 6   CD (9-)     380.8
   100

   578.1
8+
  1175.6 4   CD 12+     319.3 2 
   100

   856.3
10+
  1229.0 6   CD (11-)     270.4 2 
  372.6
    35.7
  ≈100


   958.6
   856.3
(9-)
10+
  1531.5 4   CD 14+     355.9 2 
 

  1175.6
12+
  1539.7 6   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+
  1921.0 5   CD 16+     389.6 3 
   100

  1531.5
14+
  2266.5 6 ?  CD (17-)     345.5 2 
  380
 
 


  1921.0
  1885.9
16+
(15-)
  2337.6 6 ?  CD (18+)     416.6 2 ?
   100

  1921.0
16+
  2779.6 11   C  (20+)     442
   100

  2337.6
(18+)
  3243.6 15   C  (22+)     464
   100

  2779.6
(20+)

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

Jπ(level): Spin/parity assignments for higher-lying states are based on assignment to g.s. rotational band or octupole-vibrational band. 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.
     0.0 0+ 20.23 d 2 
% α = 100
     
    51.737 23  2+ 0.26 ns 3     51.75 4 
   100
E2
     0.0
0+
   169.35 4  4+     117.8 2 
   100
E2
    51.737
2+
   346.96 20  6+     177.6 2 
   100
E2
   169.35
4+
   578.1 3  8+     231.1 2 
   100
E2
   346.96
6+
   856.3 3  10+     278.2 2 
   100

   578.1
8+
  1175.6 4  12+     319.3 2 
   100

   856.3
10+
  1531.5 4  14+     355.9 2 
 

  1175.6
12+
  1921.0 5  16+     389.6 3 
   100

  1531.5
14+
  2337.6 6  (18+)     416.6 2 ?
   100

  1921.0
16+
  2779.6 11  (20+)     442
   100

  2337.6
(18+)
  3243.6 15  (22+)     464
   100

  2779.6
(20+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=0- OCTUPOLE-VIBRATIONAL band.
   366.654 18  (1-)        
   435.20 3  (3-)     265.85 3 
  383.46 2 
    38 4 
   100 5 
E1
E1
   169.35
    51.737
4+
2+
   558.2 7  (5-)     211.1
  388.9
 
 


   346.96
   169.35
6+
4+
   734.0 10  (7-)     387.0
   100

   346.96
6+
   958.6 6  (9-)     380.8
   100

   578.1
8+
  1229.0 6  (11-)     270.4 2 
  372.6
    35.7
  ≈100


   958.6
   856.3
(9-)
10+
  1539.7 6  (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+
  2266.5 6  (17-)     345.5 2 
  380
 
 


  1921.0
  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
    51.737 2+ 0.26 ns 3     51.75 4 E2307B(E2)(W.u.)=222 27, α=307 4, α(L)=223.7 32, α(M)=61.9 9, α(N)=16.77 24, α(O)=3.84 6, α(P)=0.623 9, α(Q)=0.001583 23
   169.35 4+     117.8 2 E26.43α=6.43 10, α(K)=0.1894 29, α(L)=4.55 7, α(M)=1.261 20, α(N)=0.342 5, α(O)=0.0787 13, α(P)=0.01293 21, α(Q)=6.15×10-5 9
   346.96 6+     177.6 2 E21.174α=1.174 17, α(K)=0.1842 26, α(L)=0.722 11, α(M)=0.1992 30, α(N)=0.0541 8, α(O)=0.01248 19, α(P)=0.002076 31, α(Q)=1.735×10-5 25
   366.654 (1-)     314.92 2 E10.0353α=0.0353 5, α(K)=0.0281 4, α(L)=0.00540 8, α(M)=0.001301 18, α(N)=0.000348 5, α(O)=8.31×10-5 12, α(P)=1.535E-5 21, α(Q)=9.93E-7 14
(1-)     366.65 2 E10.0254α=0.0254 4, α(K)=0.02038 29, α(L)=0.00383 5, α(M)=0.000920 13, α(N)=0.0002463 34, α(O)=5.90×10-5 8, α(P)=1.096E-5 15, α(Q)=7.31E-7 10
   435.20 (3-)     265.85 3 E10.0513α=0.0513 7, α(K)=0.0407 6, α(L)=0.00801 11, α(M)=0.001935 27, α(N)=0.000517 7, α(O)=0.0001233 17, α(P)=2.261×10-5 32, α(Q)=1.410E-6 20
(3-)     383.46 2 E10.02315α=0.02315 32, α(K)=0.01857 26, α(L)=0.00347 5, α(M)=0.000833 12, α(N)=0.0002229 31, α(O)=5.34×10-5 7, α(P)=9.94E-6 14, α(Q)=6.68E-7 9
   578.1 8+     231.1 2 E20.444α=0.444 6, α(K)=0.1212 17, α(L)=0.2358 34, α(M)=0.0646 9, α(N)=0.01754 25, α(O)=0.00406 6, α(P)=0.000683 10, α(Q)=8.60×10-6 12

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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=4.8×-12 20 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.
E(level): %22Ne=4.8×-12 20 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. Kπ=0+ GS ROTATIONAL band.
    51.7372+ 0.26 ns 3  E(level): Kπ=0+ GS ROTATIONAL band.
   169.354+   E(level): Kπ=0+ GS ROTATIONAL band.
   346.966+   E(level): Kπ=0+ GS ROTATIONAL band.
   366.654(1-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   435.20(3-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   558.2(5-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   578.18+   E(level): Kπ=0+ GS ROTATIONAL band.
   734.0(7-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
   856.310+   E(level): Kπ=0+ GS ROTATIONAL band.
   958.6(9-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1175.612+   E(level): Kπ=0+ GS ROTATIONAL band.
  1229.0(11-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1531.514+   E(level): Kπ=0+ GS ROTATIONAL band.
  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.
  1921.016+   E(level): Kπ=0+ GS ROTATIONAL band.
  2266.5(17-)   E(level): From 230Pa β- Decay. Kπ=0- OCTUPOLE-VIBRATIONAL band.
  2337.6(18+)   E(level): Kπ=0+ GS ROTATIONAL band.
  2779.6(20+)   E(level): Kπ=0+ GS ROTATIONAL band.
  3243.6(22+)   E(level): Kπ=0+ GS ROTATIONAL band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    51.737    51.75E(γ): Weighted average of 51.77 keV 5 (1970Lo02) and 51.72 keV 5 (1971Ku25).
   366.654   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.
   435.20   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)
  2266.5   380E(γ): From 232Th(α,6nγ)
  2779.6   442E(γ): From 232Th(α,6nγ)
  3243.6   464E(γ): From 232Th(α,6nγ)

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