ADOPTED LEVELS, GAMMAS for 234Th

Author: S. Ota |  Citation: Nucl. Data Sheets 207, 351 (2026) |  Cutoff date: 1-Dec-2023 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=274 keV 3S(n)= 6190 keV 3S(p)= 7984 keV 13Q(α)= 3672 keV 11
Reference: 2021WA16

References:
  A  238U α decay  B  234Ac β- decay
  C  232Th(136Xe,xγ)  D  238U(d,6Li)
  E  232Th(18O,16OG)  F  232Th(t,p)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCDEF 0+ 24.157 d 73 
% β- = 100
     
    49.55 6 ABCDEF 2+ 0.37 ns 3      49.55 6 
  100
E2
     0.0
0+
   163.05 12 ABCDEF 4+      113.5 1 
  100
(E2)
    49.55
2+
   336.45 24   CDE  6+      173.4 2 
  100
(E2)
   163.05
4+
   564.7 3   CDE  8+      228.3 2 
  100
(E2)
   336.45
6+
   688.38 22  B     (1-)      638.7 3 
   688.5 3 
   59 12 
  100 14 


    49.55
     0.0
2+
0+
   810 30    D   (0+)        
   842.5 4   C E  10+      277.8 2 
  100
(E2)
   564.7
8+
   995.0 5   C    (7-)      658.4 5 
  100

   336.45
6+
  1150 40    D   (0+)        
  1164.9 6   C E  (12+)      322.3 5 
  100
(E2)
   842.5
10+
  1194.8 5   C    (9-)      199.7 5 
   630.1 5 
    6E1 3 
  100 12 
(E2)
(E1)
   995.0
   564.7
(7-)
8+
  1441.9 5   C    (11-)      247.1 5 
   599.4 5 
  100 19 
   72 9 
(E2)
(E1)
  1194.8
   842.5
(9-)
10+
  1470 40    D   (0+)        
  1526.6 7   C    (14+)      361.8 5 
  100
(E2)
  1164.9
(12+)
  1731.0 6   C    (13-)      289.1 5 
   566.0 5 
  100 4 
   41 13 
(E2)
(E1)
  1441.9
  1164.9
(11-)
(12+)
  1896.3 15  B     (1,2+)     1847 2 
  1896 2 
  100 17 
   64 15 


    49.55
     0.0
2+
0+
  1913.0 15  B     (1,2+)     1751 2 
  1912 2 
   64 16 
  100 20 


   163.05
     0.0
4+
0+
  1923.4 8   C    (16+)      396.8 5 
  100
(E2)
  1526.6
(14+)
  2059.2 7   C    (15-)      328.2 5 
   532.7 5 
  100 16 
   10 4 
(E2)
(E1)
  1731.0
  1526.6
(13-)
(14+)
  2351.0 9   C    (18+)      427.6 5 
  100
(E2)
  1923.4
(16+)
  2422.9 8   C    (17-)      363.7 5 
   499.4 5 
  100 24 
   10 4 
(E2)
(E1)
  2059.2
  1923.4
(15-)
(16+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2805.1 11   C    (20+)      454.1 5 
  100
(E2)
  2351.0
(18+)
  2816.6 9   C    (19-)      393.7 5 
   465.8 5 ?
 
 
(E2)

  2422.9
  2351.0
(17-)
(18+)
  3238.3 11   C    (21-)      421.7 5 
  100
(E2)
  2816.6
(19-)
  3281.4 12   C    (22+)      476.3 5 
  100
(E2)
  2805.1
(20+)
  3684.3 12   C    (23-)      446.0 5 
  100
(E2)
  3238.3
(21-)
  3775.1 13   C    (24+)      493.7 5 
  100
(E2)
  3281.4
(22+)

E(level): From least squares fit to Eγ

Jπ(level): For states populated in (136Xe,Xγ), Jπ assignments are based on assignment of levels to g.s. band and octupole band, supported by γγ(θ) measurements.

M(γ): γγ(θ) in 234Th(136Xe,Xγ), except where noted. Q and d assignments are assumed (E2) and (E1), respectively, based on assignments to rotational bands

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - GS band.
     0.0 0+ 24.157 d 73 
% β- = 100
     
    49.55 6  2+ 0.37 ns 3      49.55 6 
  100
E2
     0.0
0+
   163.05 12  4+      113.5 1 
  100
(E2)
    49.55
2+
   336.45 24  6+      173.4 2 
  100
(E2)
   163.05
4+
   564.7 3  8+      228.3 2 
  100
(E2)
   336.45
6+
   842.5 4  10+      277.8 2 
  100
(E2)
   564.7
8+
  1164.9 6  (12+)        
  1526.6 7  (14+)      361.8 5 
  100
(E2)
  1164.9
(12+)
  1923.4 8  (16+)      396.8 5 
  100
(E2)
  1526.6
(14+)
  2351.0 9  (18+)        
  2805.1 11  (20+)      454.1 5 
  100
(E2)
  2351.0
(18+)
  3281.4 12  (22+)      476.3 5 
  100
(E2)
  2805.1
(20+)
  3775.1 13  (24+)      493.7 5 
  100
(E2)
  3281.4
(22+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Octupole band.
   995.0 5  (7-)        
  1194.8 5  (9-)      199.7 5 
   630.1 5 
    6E1 3 
  100 12 
(E2)
(E1)
   995.0
   564.7
(7-)
8+
  1441.9 5  (11-)      247.1 5 
   599.4 5 
  100 19 
   72 9 
(E2)
(E1)
  1194.8
   842.5
(9-)
10+
  1731.0 6  (13-)      289.1 5 
   566.0 5 
  100 4 
   41 13 
(E2)
(E1)
  1441.9
  1164.9
(11-)
(12+)
  2059.2 7  (15-)      328.2 5 
   532.7 5 
  100 16 
   10 4 
(E2)
(E1)
  1731.0
  1526.6
(13-)
(14+)
  2422.9 8  (17-)      363.7 5 
   499.4 5 
  100 24 
   10 4 
(E2)
(E1)
  2059.2
  1923.4
(15-)
(16+)
  2816.6 9  (19-)        
  3238.3 11  (21-)      421.7 5 
  100
(E2)
  2816.6
(19-)
  3684.3 12  (23-)      446.0 5 
  100
(E2)
  3238.3
(21-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    49.55 2+ 0.37 ns 3      49.55 6 E2322B(E2)(W.u.)=185 +17-14, α=322 5, α(L)=235 4, α(M)=64.4 10, α(N)=17.24 26, α(O)=3.83 6, α(P)=0.632 10, α(Q)=0.001692 25
   163.05 4+      113.5 1 (E2)6.49α=6.49 9, α(K)=0.2332 33, α(L)=4.58 7, α(M)=1.258 18, α(N)=0.337 5, α(O)=0.0752 11, α(P)=0.01250 18, α(Q)=6.40×10-5 9
   336.45 6+      173.4 2 (E2)1.128α=1.128 17, α(K)=0.2004 28, α(L)=0.679 10, α(M)=0.1857 28, α(N)=0.0498 7, α(O)=0.01114 17, α(P)=0.001872 28, α(Q)=1.790×10-5 26
   564.7 8+      228.3 2 (E2)0.411α=0.411 6, α(K)=0.1242 18, α(L)=0.2102 30, α(M)=0.0571 8, α(N)=0.01529 22, α(O)=0.00344 5, α(P)=0.000584 8, α(Q)=8.75×10-6 12
   842.5 10+      277.8 2 (E2)0.2142α=0.2142 30, α(K)=0.0849 12, α(L)=0.0951 14, α(M)=0.0256 4, α(N)=0.00686 10, α(O)=0.001547 22, α(P)=0.000265 4, α(Q)=5.44×10-6 8
  1164.9 (12+)      322.3 5 (E2)0.1361α=0.1361 20, α(K)=0.0633 9, α(L)=0.0536 8, α(M)=0.01433 22, α(N)=0.00384 6, α(O)=0.000868 13, α(P)=0.0001503 23, α(Q)=3.86×10-6 6
  1194.8 (9-)      199.7 5 (E2)0.662α=0.662 11, α(K)=0.1588 23, α(L)=0.369 7, α(M)=0.1006 18, α(N)=0.0270 5, α(O)=0.00605 11, α(P)=0.001021 18, α(Q)=1.229×10-5 19
(9-)      630.1 5 (E1)0.00804α=0.00804 11, α(K)=0.00655 9, α(L)=0.001125 16, α(M)=0.000267 4, α(N)=7.08×10-5 10, α(O)=1.661E-5 23, α(P)=3.17E-6 4, α(Q)=2.76E-7 4
  1441.9 (11-)      247.1 5 (E2)0.314α=0.314 5, α(K)=0.1068 16, α(L)=0.1519 25, α(M)=0.0411 7, α(N)=0.01102 18, α(O)=0.00248 4, α(P)=0.000423 7, α(Q)=7.21×10-6 11
(11-)      599.4 5 (E1)0.00884α=0.00884 12, α(K)=0.00720 10, α(L)=0.001243 18, α(M)=0.000295 4, α(N)=7.83×10-5 11, α(O)=1.836E-5 26, α(P)=3.50E-6 5, α(Q)=3.03E-7 4
  1526.6 (14+)      361.8 5 (E2)0.0978α=0.0978 14, α(K)=0.0503 7, α(L)=0.0350 5, α(M)=0.00929 14, α(N)=0.00249 4, α(O)=0.000564 8, α(P)=9.84×10-5 15, α(Q)=2.97E-6 4
  1731.0 (13-)      289.1 5 (E2)0.1890α=0.1890 28, α(K)=0.0784 11, α(L)=0.0813 13, α(M)=0.02186 34, α(N)=0.00585 9, α(O)=0.001321 21, α(P)=0.0002271 35, α(Q)=4.96×10-6 7
(13-)      566.0 5 (E1)0.00988α=0.00988 14, α(K)=0.00804 11, α(L)=0.001396 20, α(M)=0.000332 5, α(N)=8.79×10-5 12, α(O)=2.062E-5 29, α(P)=3.92E-6 6, α(Q)=3.37E-7 5
  1923.4 (16+)      396.8 5 (E2)0.0761α=0.0761 11, α(K)=0.0420 6, α(L)=0.0252 4, α(M)=0.00665 10, α(N)=0.001780 26, α(O)=0.000405 6, α(P)=7.11×10-5 10, α(Q)=2.428E-6 35
  2059.2 (15-)      328.2 5 (E2)0.1290α=0.1290 19, α(K)=0.0610 9, α(L)=0.0501 8, α(M)=0.01338 20, α(N)=0.00358 5, α(O)=0.000811 12, α(P)=0.0001404 21, α(Q)=3.70×10-6 5
(15-)      532.7 5 (E1)0.01113α=0.01113 16, α(K)=0.00904 13, α(L)=0.001581 22, α(M)=0.000376 5, α(N)=9.96×10-5 14, α(O)=2.334E-5 33, α(P)=4.43E-6 6, α(Q)=3.77E-7 5
  2351.0 (18+)      427.6 5 (E2)0.0627α=0.0627 9, α(K)=0.0363 5, α(L)=0.01949 28, α(M)=0.00512 7, α(N)=0.001369 20, α(O)=0.000312 5, α(P)=5.51×10-5 8, α(Q)=2.066E-6 29
  2422.9 (17-)      363.7 5 (E2)0.0964α=0.0964 14, α(K)=0.0498 7, α(L)=0.0343 5, α(M)=0.00911 14, α(N)=0.00244 4, α(O)=0.000554 8, α(P)=9.66×10-5 14, α(Q)=2.94E-6 4
(17-)      499.4 5 (E1)0.01265α=0.01265 18, α(K)=0.01027 15, α(L)=0.001808 26, α(M)=0.000430 6, α(N)=0.0001140 16, α(O)=2.67×10-5 4, α(P)=5.06E-6 7, α(Q)=4.27E-7 6
  2805.1 (20+)      454.1 5 (E2)0.0539α=0.0539 8, α(K)=0.0324 5, α(L)=0.01594 23, α(M)=0.00417 6, α(N)=0.001114 16, α(O)=0.000254 4, α(P)=4.51×10-5 7, α(Q)=1.817E-6 26
  2816.6 (19-)      393.7 5 (E2)0.0777α=0.0777 11, α(K)=0.0427 6, α(L)=0.0259 4, α(M)=0.00684 10, α(N)=0.001831 27, α(O)=0.000416 6, α(P)=7.30×10-5 11, α(Q)=2.470E-6 35
  3238.3 (21-)      421.7 5 (E2)0.0650α=0.0650 9, α(K)=0.0373 5, α(L)=0.02043 30, α(M)=0.00537 8, α(N)=0.001437 21, α(O)=0.000327 5, α(P)=5.77×10-5 8, α(Q)=2.128E-6 30
  3281.4 (22+)      476.3 5 (E2)0.0479α=0.0479 7, α(K)=0.0295 4, α(L)=0.01364 20, α(M)=0.00355 5, α(N)=0.000950 14, α(O)=0.0002172 31, α(P)=3.87×10-5 6, α(Q)=1.643E-6 23
  3684.3 (23-)      446.0 5 (E2)0.0564α=0.0564 8, α(K)=0.0335 5, α(L)=0.01692 25, α(M)=0.00443 6, α(N)=0.001185 17, α(O)=0.000270 4, α(P)=4.79×10-5 7, α(Q)=1.888E-6 27
  3775.1 (24+)      493.7 5 (E2)0.0440α=0.0440 6, α(K)=0.0276 4, α(L)=0.01215 17, α(M)=0.00316 5, α(N)=0.000844 12, α(O)=0.0001932 28, α(P)=3.45×10-5 5, α(Q)=1.524E-6 22

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 24.157 d 73 
% β- = 100
α decay was not observed: %α<1×10-4 (1955De47).
E(level): α decay was not observed: %α<1×10-4 (1955De47). From 238U α decay. GS band.
    49.552+ 0.37 ns 3  E(level): From 238U α decay. GS band.
   163.054+   E(level): From 238U α decay. GS band.
   336.456+   E(level): From 238U α decay. GS band.
   564.78+   E(level): From 238U α decay. GS band.
   810(0+)   Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands.
   842.510+   E(level): From 238U α decay. GS band.
   995.0(7-)   E(level): From 234Ac β- decay. Octupole band.
  1150(0+)   Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands.
  1164.9(12+)   E(level): From 238U α decay. GS band.
  1194.8(9-)   E(level): From 234Ac β- decay. Octupole band.
  1441.9(11-)   E(level): From 234Ac β- decay. Octupole band.
  1470(0+)   Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands.
  1526.6(14+)   E(level): From 238U α decay. GS band.
  1731.0(13-)   E(level): From 234Ac β- decay. Octupole band.
  1923.4(16+)   E(level): From 238U α decay. GS band.
  2059.2(15-)   E(level): From 234Ac β- decay. Octupole band.
  2351.0(18+)   E(level): From 238U α decay. GS band.
  2422.9(17-)   E(level): From 234Ac β- decay. Octupole band.
  2805.1(20+)   E(level): From 238U α decay. GS band.
  2816.6(19-)   E(level): From 234Ac β- decay. Octupole band.
  3238.3(21-)   E(level): From 234Ac β- decay. Octupole band.
  3281.4(22+)   E(level): From 238U α decay. GS band.
  3684.3(23-)   E(level): From 234Ac β- decay. Octupole band.
  3775.1(24+)   E(level): From 238U α decay. GS band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    49.55    49.55E(γ): From 238U α decay.
I(γ): From 238U α decay.
   163.05   113.5E(γ): From 238U α decay.
I(γ): From 238U α decay.
M(γ): Assumed in 238U α decay
   336.45   173.4M(γ): Deduced by 1989Ge01 from particle-γ angular correlation measurements in 232Th(18O,16Oγ) reaction.
   564.7   228.3M(γ): Deduced by 1989Ge01 from particle-γ angular correlation measurements in 232Th(18O,16Oγ) reaction.
   688.38   638.7E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.
   688.5E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.
   842.5   277.8M(γ): Deduced by 1989Ge01 from particle-γ angular correlation measurements in 232Th(18O,16Oγ) reaction.
  1731.0   289.1E(γ): From 238U α decay.
I(γ): From 238U α decay.
  1896.3  1847E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.
  1896E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.
  1913.0  1751E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.
  1912E(γ): From 234Ac β- decay.
I(γ): From 234Ac β- decay.

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