ADOPTED LEVELS, GAMMAS for 222Th
Authors: Sukhjeet Singh, A. K. Jain, Jagdish K. Tuli | Citation: Nucl. Data Sheets 112,2851 (2011) | Cutoff date: 31-Mar-2011
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4.95×103 keV SY | S(n)= 7806 keV 16 | S(p)= 4.61×103 keV 6 | Q(α)= 8127 keV 5 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 226U α decay | B | (HI,xnγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 0.0 | AB | 0+ | 2.24 ms 3 % α = 100 | ||||
| 183.3 | AB | 2+ | 240 ps 20 | 183.3 | E2 | 0.0 | 0+ |
| 439.8 | B | 4+ | 46 ps 6 | 256.5 | E2 | 183.3 | 2+ |
| 467.0 | B | 3- | 283.7 | 183.3 | 2+ | ||
| 651.0 | B | 5- | 211.2 | E1 | 439.8 | 4+ | |
| 750.0 | B | 6+ | ≤ 45 ps | 99.1 310.2 | (E1) E2 | 651.0 439.8 | 5- 4+ |
| 923.5 | B | 7- | 173.3 272.5 | E1 (E2) | 750.0 651.0 | 6+ 5- | |
| 1093.5 | B | 8+ | 170.4 343.5 | E1 E2 | 923.5 750.0 | 7- 6+ | |
| 1255.3 | B | 9- | 161.2 331.8 | E1 E2 | 1093.5 923.5 | 8+ 7- | |
| 1461.1 | B | 10+ | 206.4 367.6 | E1 E2 | 1255.3 1093.5 | 9- 8+ | |
| 1622.6 | B | 11- | 160.9 367.3 | (E1) E2 | 1461.1 1255.3 | 10+ 9- | |
| 1850.7 | B | 12+ | 228.5 389.6 | E1 E2 | 1622.6 1461.1 | 11- 10+ | |
| 2015.5 | B | 13- | 164.6 392.9 | E1 E2 | 1850.7 1622.6 | 12+ 11- | |
| 2259.7 | B | 14+ | 244.3 409.0 | E1 E2 | 2015.5 1850.7 | 13- 12+ | |
| 2431.9 | B | 15- | 172.0 416.4 | (E1) E2 | 2259.7 2015.5 | 14+ 13- | |
| 2687.8 | B | 16+ | 256.1 428.1 | E1 E2 | 2431.9 2259.7 | 15- 14+ | |
| 2873.0 | B | 17- | 185.0 441.1 | (E1) E2 | 2687.8 2431.9 | 16+ 15- | |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 3133.5 | B | 18+ | 260.2 445.7 | 2873.0 2687.8 | 17- 16+ | ||
| 3340.7 | B | 19- | 207.5 467.7 | 3133.5 2873.0 | 18+ 17- | ||
| 3596.0 | B | 20+ | 255 462.5 | E2 | 3340.7 3133.5 | 19- 18+ | |
| 3835.5 | B | 21- | 239.2 494.8 | 3596.0 3340.7 | 20+ 19- | ||
| 4077.6 | B | 22+ | 243 481.6 | 3835.5 3596.0 | 21- 20+ | ||
| 4349.5 | B | 23- | 273 514 | 4077.6 3835.5 | 22+ 21- | ||
| 4577.9 | B | 24+ | 228 500.3 | 4349.5 4077.6 | 23- 22+ | ||
| 4882.5? | B | (25-) | 304? 533.3 | 4577.9 4349.5 | 24+ 23- | ||
| 5097.9? | B | (26+) | 217? 520.0 | 4882.5 4577.9 | (25-) 24+ | ||
Jπ(level): All excited state properties are from (HI,xnγ) reaction data. Jπ are based upon γ multipolarities and fits to rotational bands.
T1/2(level): The excited state half-lives were measured by 1985Bo32. See (HI,xnγ) reaction section.
E(γ): From (HI,xnγ) data.
M(γ): All γ properties are from (HI,xnγ) reaction data.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | M(γ) | Final Levels | ||
| Band 1 - Kπ=0+ GS band. | |||||||
| 0.0 | 0+ | 2.24 ms 3 % α = 100 | |||||
| 183.3 | 2+ | 240 ps 20 | 183.3 | E2 | 0.0 | 0+ | |
| 439.8 | 4+ | 46 ps 6 | 256.5 | E2 | 183.3 | 2+ | |
| 750.0 | 6+ | ≤ 45 ps | 99.1 310.2 | (E1) E2 | 651.0 439.8 | 5- 4+ | |
| 1093.5 | 8+ | 170.4 343.5 | E1 E2 | 923.5 750.0 | 7- 6+ | ||
| 1461.1 | 10+ | 206.4 367.6 | E1 E2 | 1255.3 1093.5 | 9- 8+ | ||
| 1850.7 | 12+ | 228.5 389.6 | E1 E2 | 1622.6 1461.1 | 11- 10+ | ||
| 2259.7 | 14+ | 244.3 409.0 | E1 E2 | 2015.5 1850.7 | 13- 12+ | ||
| 2687.8 | 16+ | 256.1 428.1 | E1 E2 | 2431.9 2259.7 | 15- 14+ | ||
| 3133.5 | 18+ | 260.2 445.7 | 2873.0 2687.8 | 17- 16+ | |||
| 3596.0 | 20+ | 255 462.5 | E2 | 3340.7 3133.5 | 19- 18+ | ||
| 4077.6 | 22+ | 243 481.6 | 3835.5 3596.0 | 21- 20+ | |||
| 4577.9 | 24+ | 228 500.3 | 4349.5 4077.6 | 23- 22+ | |||
| 5097.9 | (26+) | 217? 520.0 | 4882.5 4577.9 | (25-) 24+ | |||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | M(γ) | Final Levels | ||
| Band 2 - Kπ=0- OCTUPOLE-VIBRATIONAL band. | |||||||
| 467.0 | 3- | ||||||
| 651.0 | 5- | 211.2 | E1 | 439.8 | 4+ | ||
| 923.5 | 7- | 173.3 272.5 | E1 (E2) | 750.0 651.0 | 6+ 5- | ||
| 1255.3 | 9- | 161.2 331.8 | E1 E2 | 1093.5 923.5 | 8+ 7- | ||
| 1622.6 | 11- | 160.9 367.3 | (E1) E2 | 1461.1 1255.3 | 10+ 9- | ||
| 2015.5 | 13- | 164.6 392.9 | E1 E2 | 1850.7 1622.6 | 12+ 11- | ||
| 2431.9 | 15- | 172.0 416.4 | (E1) E2 | 2259.7 2015.5 | 14+ 13- | ||
| 2873.0 | 17- | 185.0 441.1 | (E1) E2 | 2687.8 2431.9 | 16+ 15- | ||
| 3340.7 | 19- | 207.5 467.7 | 3133.5 2873.0 | 18+ 17- | |||
| 3835.5 | 21- | 239.2 494.8 | 3596.0 3340.7 | 20+ 19- | |||
| 4349.5 | 23- | 273 514 | 4077.6 3835.5 | 22+ 21- | |||
| 4882.5 | (25-) | 304? 533.3 | 4577.9 4349.5 | 24+ 23- | |||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 183.3 | 2+ | 240 ps 20 | 183.3 | E2 | 0.931 | B(E2)(W.u.)=74 7, α=0.931 |
| 439.8 | 4+ | 46 ps 6 | 256.5 | E2 | 0.283 | B(E2)(W.u.)=108 15, α=0.283 |
| 651.0 | 5- | 211.2 | E1 | 0.0836 | α=0.0836 | |
| 750.0 | 6+ | ≤ 45 ps | 99.1 | (E1) | 0.122 | B(E1)(W.u.)≥0.0015, α=0.122 |
| 6+ | ≤ 45 ps | 310.2 | E2 | 0.155 | B(E2)(W.u.)≥27, α=0.155 | |
| 923.5 | 7- | 173.3 | E1 | 0.134 | α=0.134 | |
| 7- | 272.5 | (E2) | 0.232 | α=0.232 | ||
| 1093.5 | 8+ | 170.4 | E1 | 0.140 | α=0.140 | |
| 8+ | 343.5 | E2 | 0.115 | α=0.115 | ||
| 1255.3 | 9- | 161.2 | E1 | 0.160 | α=0.160 | |
| 9- | 331.8 | E2 | 0.127 | α=0.127 | ||
| 1461.1 | 10+ | 206.4 | E1 | 0.088 | α=0.088 | |
| 10+ | 367.6 | E2 | 0.095 | α=0.095 | ||
| 1622.6 | 11- | 160.9 | (E1) | 0.160 | α=0.160 | |
| 11- | 367.3 | E2 | 0.095 | α=0.095 | ||
| 1850.7 | 12+ | 228.5 | E1 | 0.0700 | α=0.0700 | |
| 12+ | 389.6 | E2 | 0.0813 | α=0.0813 | ||
| 2015.5 | 13- | 164.6 | E1 | 0.152 | α=0.152 | |
| 13- | 392.9 | E2 | 0.0795 | α=0.0795 | ||
| 2259.7 | 14+ | 244.3 | E1 | 0.0597 | α=0.0597 | |
| 14+ | 409.0 | E2 | 0.0715 | α=0.0715 | ||
| 2431.9 | 15- | 172.0 | (E1) | 0.137 | α=0.137 | |
| 15- | 416.4 | E2 | 0.0683 | α=0.0683 | ||
| 2687.8 | 16+ | 256.1 | E1 | 0.0536 | α=0.0536 | |
| 16+ | 428.1 | E2 | 0.0636 | α=0.0636 | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 2873.0 | 17- | 185.0 | (E1) | 0.115 | α=0.115 | |
| 17- | 441.1 | E2 | 0.0589 | α=0.0589 | ||
| 3596.0 | 20+ | 462.5 | E2 | 0.0524 | α=0.0524 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 2.24 ms 3 % α = 100 | Branching: only α decay has been observed. E(level): Branching: only α decay has been observed. Kπ=0+ GS band. |
| 183.3 | 2+ | 240 ps 20 | E(level): Kπ=0+ GS band. |
| 439.8 | 4+ | 46 ps 6 | E(level): Kπ=0+ GS band. |
| 467.0 | 3- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 651.0 | 5- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 750.0 | 6+ | ≤ 45 ps | E(level): Kπ=0+ GS band. |
| 923.5 | 7- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 1093.5 | 8+ | E(level): Kπ=0+ GS band. | |
| 1255.3 | 9- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 1461.1 | 10+ | E(level): Kπ=0+ GS band. | |
| 1622.6 | 11- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 1850.7 | 12+ | E(level): Kπ=0+ GS band. | |
| 2015.5 | 13- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 2259.7 | 14+ | E(level): Kπ=0+ GS band. | |
| 2431.9 | 15- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 2687.8 | 16+ | E(level): Kπ=0+ GS band. | |
| 2873.0 | 17- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 3133.5 | 18+ | E(level): Kπ=0+ GS band. | |
| 3340.7 | 19- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 3596.0 | 20+ | E(level): Kπ=0+ GS band. | |
| 3835.5 | 21- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 4077.6 | 22+ | E(level): Kπ=0+ GS band. | |
| 4349.5 | 23- | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| 4577.9 | 24+ | E(level): Kπ=0+ GS band. | |
| 4882.5 | (25-) | E(level): Kπ=0- OCTUPOLE-VIBRATIONAL band. | |
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 5097.9 | (26+) | E(level): Kπ=0+ GS band. |
See 1982Du16, 1982Le19, 1983Ro14, 1984Na22, 1988So08, 1989Eg02 for calculations of equilibrium deformations and discussions of deformation parameters.
See 1987Na10, 1985Na07, 1984Fr06 and 1984Na08 for studies on the shapes of the rotating nuclei.
See 2010Gu18 for microscopic description of nuclear shape evolution from spherical to octupole-deformation.
See 2009Qi07 for predictions of 14C cluster decay using universal decay law.
See 1991Bu10 for theoretical calculations of intrinsic-dipole moments by including β(2) - β(8) deformations which were taken from 1988So08. Using the ground-state deformation parameters of 1984Na22, the macroscopic dipole moment was calculated by 1986Do03. See also 2004Ad15, 2003Ad32
Theoretical values of the reduced dipole and quadrupole transition probabilities were calculated, and their ratios were compared with experimental ratios by 1995De13, 1993Dz01, 1988Ot02, 1987Ka37, 1987Na10, 1986Le05
The level energies of the g.s. band up to the 26+ state and of the octupole-vibrational band up to the 25- state were calculated by 1995De13 by considering higher order of deformations. See 1995De13 for calculations, discussions and comparison with experiments. See also 1988Na08, 1988Ot02, 2005Za02, 2003Sh02, 2001Za04, 2001Za09, 1999Jo17
The changes in calculated binding energies due to varying the 26 pole deformation parameters were studied by 1986Ch23.
Possible decay by 26Ne emission was studied and partial half-life relative to α decay half-life was calculated by 1990Sh01.
Levels: The Kπ=0+ g.s. band and the Kπ=0- band at 467.0 keV have been interpreted as octupole parity-doublet bands. This nucleus lies in the left part of the octupole deformation defined by the spin systematics for octupole shapes (1990Ja11).
Q-value: Note: Current evaluation has used the following Q record
Q-value: Estimated: ΔQ(β-)=70 (2003Au03,2011AuZZ)