ADOPTED LEVELS, GAMMAS for 226Th

Author: Y. A. Akovali |  Citation: Nucl. Data Sheets 77,433 (1996) |  Cutoff date: 1-Feb-1996 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-2836 keV 13S(n)= 7185 keV 7S(p)= 5730 keV 7Q(α)= 6450.9 keV 23
Reference: 2012WA38

References:
  A  230U α decay  B  226Ac β- decay
  C  (HI,xnγ) 

General Comments:

Wave functions and energies of K=0-,2+,2-,3- and second 0- octupole-vibrational states were calculated by 1975Iv03. See 1985Bo43, 1983Pi04, 1983Da28 for calculations of K=0-, 0+ vibrational states energies for various nuclear potentials; see 1970Ne08 for calculated energies of K=0-,1-,2- and 3- bands. See 1972Va20 for a noncollective description of a low-lying 0+ state and its calculated energy.

See 1995De13 and 1995La01 for calculations of the 0+ and 0- rotational band energies.

For calculations of equilibrium deformation parameters see, for example, 1970Ga12, 1975Iv03, 1981Gy03, 1982Du16, 1982Le19, 1983Ro14, 1984Na22 and 1985Na07.

For calculations of electric quadrupole and hexadecapole moments see, for example, 1970Ga12, 1975Iv03 and 1983Ro14.

See 1970Ne08 and 1985Bo43 for calculated B(E3; 0+ to 3-); 1977Ba45 for calculated B(E3; 0+ to 3-) and B(E1; 0+ to 1-) values for K=0- band; 1995La01 for transition matrix elements for 1- to 0+, 2+ to 0+, 3- to 1- and 3- to 0+ γ transitions.

The fermion dynamic symmetry model was used by 1992Ch20 to calculate the properties of the predicted superdeformed state. See 1992Ch20 for the calculated potential well, level energies and deformations.

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
     0.0ABC 0+ 30.57 m 10 
% α = 100
     
    72.20 4 ABC 2+ 0.395 ns 20     72.20 4 
  100
E2
     0.0
0+
   226.43 5 ABC 4+     154.23 3 
  100
(E2)
    72.20
2+
   230.37 5 ABC 1-     158.18 3 
  230.37 5 
   60 5 
  100 5 
E1
E1
    72.20
     0.0
2+
0+
   307.5 2 ABC 3-      81.0 5 
  235.3 1 
    4.1 10 
  100 7 


   226.43
    72.20
4+
2+
   351 2 A          
   362 3 A          
   447.3 2 A C 6+     220.9 1 
  100
[E2]
   226.43
4+
   450.5 2 A C 5-     224.1 2 
  100
[E1]
   226.43
4+
   657.9 2   C 7-     207.4 1 
  210.7 1 
 
 


   450.5
   447.3
5-
6+
   721.9 2   C 8+      63.9 1 
  274.6 1 
    0.13 5 
    1.0


   657.9
   447.3
7-
6+
   805.2 4 AB  (0+)     574.8 3 
 

   230.37
1-
   847.8 4 AB  (2+)     540.4 3 
  617.4 4 
  100 20 
   90 20 


   307.5
   230.37
3-
1-
   923.1 3   C 9-     201.3 1 
  265.2 1 
  400 40 
  100


   721.9
   657.9
8+
7-
  1040.3 3   C 10+     116.9 2 
  318.4 2 
   27.6 21 
  100


   923.1
   721.9
9-
8+
  1238.4 4   C 11-     198.2 2 
  315.2 2 
  161 12 
  100


  1040.3
   923.1
10+
9-
  1395.2 4   C 12+     156.7 2 
  354.9 2 
   42 3 
  100


  1238.4
  1040.3
11-
10+
  1596.0 5   C 13-     200.9 2 
  357.6 2 
 
 


  1395.2
  1238.4
12+
11-
  1781.5 5   C 14+     185.5 2 
  386.3 2 
   40 4 
  100


  1596.0
  1395.2
13-
12+
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1989.4 5   C 15-     208.0 2 
  393.4 2 
   61 10 
  100


  1781.5
  1596.0
14+
13-
  2195.8 6   C 16+     206.3 3 
  414.3 3 
 
 


  1989.4
  1781.5
15-
14+
  2412.8 6   C 17-     216.9 3 
  423.5 3 
   43 7 
  100


  2195.8
  1989.4
16+
15-
  2635.1 7   C 18+     439.3 3 
 

  2195.8
16+
  2861.1 7   C 19-     226.0 3 
  448.3 3 
   42 10 
  100


  2635.1
  2412.8
18+
17-
  3097.1 8   C 20+     462.0 3 
 

  2635.1
18+

Jπ(level): Assignments for J|>8 and J|>7 members of the g.s. and the octupole-vibrational bands, respectively, are based on (HI,xnγ) data.

E(γ): From 230U α decay and 226Ac β- decay.

I(γ): Relative photon intensity from each level.

M(γ): From ce measurements in 226Ac β- decay.

Back to top

Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Kπ=0+ GROUND-STATE band.
     0.0 0+ 30.57 m 10 
% α = 100
     
    72.20 4  2+ 0.395 ns 20     72.20 4 
  100
E2
     0.0
0+
   226.43 5  4+     154.23 3 
  100
(E2)
    72.20
2+
   447.3 2  6+     220.9 1 
  100
[E2]
   226.43
4+
   721.9 2  8+      63.9 1 
  274.6 1 
    0.13 5 
    1.0


   657.9
   447.3
7-
6+
  1040.3 3  10+        
  1395.2 4  12+        
  1781.5 5  14+     185.5 2 
  386.3 2 
   40 4 
  100


  1596.0
  1395.2
13-
12+
  2195.8 6  16+     206.3 3 
  414.3 3 
 
 


  1989.4
  1781.5
15-
14+
  2635.1 7  18+     439.3 3 
 

  2195.8
16+
  3097.1 8  20+     462.0 3 
 

  2635.1
18+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=0- OCTUPOLE-VIBRATIONAL band.
   230.37 5  1-        
   307.5 2  3-      81.0 5 
  235.3 1 
    4.1 10 
  100 7 


   226.43
    72.20
4+
2+
   450.5 2  5-     224.1 2 
  100
[E1]
   226.43
4+
   657.9 2  7-     207.4 1 
  210.7 1 
 
 


   450.5
   447.3
5-
6+
   923.1 3  9-     201.3 1 
  265.2 1 
  400 40 
  100


   721.9
   657.9
8+
7-
  1238.4 4  11-        
  1596.0 5  13-        
  1989.4 5  15-     208.0 2 
  393.4 2 
   61 10 
  100


  1781.5
  1596.0
14+
13-
  2412.8 6  17-     216.9 3 
  423.5 3 
   43 7 
  100


  2195.8
  1989.4
16+
15-
  2861.1 7  19-     226.0 3 
  448.3 3 
   42 10 
  100


  2635.1
  2412.8
18+
17-
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Kπ=0+ BETA-VIBRATIONAL band.
   805.2 4  (0+)        
   847.8 4  (2+)     540.4 3 
  617.4 4 
  100 20 
   90 20 


   307.5
   230.37
3-
1-

Back to top

Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    72.20 2+ 0.395 ns 20     72.20 4 E253.5B(E2)(W.u.)=164 10, α=53.5
   226.43 4+     154.23 3 (E2)1.83α=1.83
   230.37 1-     158.18 3 E10.167α=0.167
1-     230.37 5 E10.0683α=0.0683
   447.3 6+     220.9 1 [E2]0.461α=0.461
   450.5 5-     224.1 2 [E1]0.0723α=0.0723

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 30.57 m 10 
% α = 100
E(level): Kπ=0+ GROUND-STATE band.
    72.202+ 0.395 ns 20  E(level): Kπ=0+ GROUND-STATE band.
   226.434+   E(level): Kπ=0+ GROUND-STATE band.
   230.371-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
   307.53-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
   447.36+   E(level): Kπ=0+ GROUND-STATE band.
   450.55-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
   657.97-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
   721.98+   E(level): Kπ=0+ GROUND-STATE band.
   805.2(0+)   E(level): Kπ=0+ BETA-VIBRATIONAL band.
   847.8(2+)   E(level): Kπ=0+ BETA-VIBRATIONAL band.
   923.19-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1040.310+   E(level): Kπ=0+ GROUND-STATE band.
  1238.411-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1395.212+   E(level): Kπ=0+ GROUND-STATE band.
  1596.013-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  1781.514+   E(level): Kπ=0+ GROUND-STATE band.
  1989.415-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  2195.816+   E(level): Kπ=0+ GROUND-STATE band.
  2412.817-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  2635.118+   E(level): Kπ=0+ GROUND-STATE band.
  2861.119-   E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band.
  3097.120+   E(level): Kπ=0+ GROUND-STATE band.

Back to top