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 13 | S(n)= 7185 keV 7 | S(p)= 5730 keV 7 | Q(α)= 6450.9 keV 23 | ||
Reference: 2012WA38 |
References: | |||
A | 230U α decay | B | 226Ac β- decay |
C | (HI,xnγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABC | 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) | XREF | Jπ(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.
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- |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
72.20 | 2+ | 0.395 ns 20 | 72.20 4 | E2 | 53.5 | B(E2)(W.u.)=164 10, α=53.5 |
226.43 | 4+ | 154.23 3 | (E2) | 1.83 | α=1.83 | |
230.37 | 1- | 158.18 3 | E1 | 0.167 | α=0.167 | |
1- | 230.37 5 | E1 | 0.0683 | α=0.0683 | ||
447.3 | 6+ | 220.9 1 | [E2] | 0.461 | α=0.461 | |
450.5 | 5- | 224.1 2 | [E1] | 0.0723 | α=0.0723 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 30.57 m 10 % α = 100 | E(level): Kπ=0+ GROUND-STATE band. |
72.20 | 2+ | 0.395 ns 20 | E(level): Kπ=0+ GROUND-STATE band. |
226.43 | 4+ | E(level): Kπ=0+ GROUND-STATE band. | |
230.37 | 1- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
307.5 | 3- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
447.3 | 6+ | E(level): Kπ=0+ GROUND-STATE band. | |
450.5 | 5- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
657.9 | 7- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
721.9 | 8+ | 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. | |
923.1 | 9- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
1040.3 | 10+ | E(level): Kπ=0+ GROUND-STATE band. | |
1238.4 | 11- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
1395.2 | 12+ | E(level): Kπ=0+ GROUND-STATE band. | |
1596.0 | 13- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
1781.5 | 14+ | E(level): Kπ=0+ GROUND-STATE band. | |
1989.4 | 15- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
2195.8 | 16+ | E(level): Kπ=0+ GROUND-STATE band. | |
2412.8 | 17- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
2635.1 | 18+ | E(level): Kπ=0+ GROUND-STATE band. | |
2861.1 | 19- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
3097.1 | 20+ | E(level): Kπ=0+ GROUND-STATE band. |
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 -2834 13 7187 8 5733 9 6451.2 10 1995Au04